FREE CUTTING STEELS.»11SMn30»11SMn37»11SMnPb30»11SMnPb37»36SMnPb14»38SMn28»44SMn28»46S20
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2 FREE CUTTING STEELS»11SMn30»11SMn37»11SMnPb30»11SMnPb37»36SMnPb14»38SMn28»44SMn28»46S20
3 11SMn30 High machinability steel not destined to heat treatment (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled C % Si % Mn % P % S % FROM - - 0,90-0,27 TO 0,14 0,05 1,30 0,11 0,33 Machinability: This steel grade is marked by a good machinability on machine tools and by an easy fragmentation of chips. Due to the high sulphur and phophorus content free-cutting steels not destined to heat treatment are not generally recoended for welding. Notes: UNI 4838 CF 9 SMn 28 DIN SMn28 AFNOR S 250 ISO SMn 28 EN SMn30
4 11SMn37 High machinability steel not destined to heat treatment (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM - - 1,00-0,34 TO 0,14 0,05 1,50 0,11 0,40 *MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled Machinability : This steel grade is marked by a good machinability on machine tools and by an easy fragmentation of chips. Weldability : Due to the high sulphur and phophorus content free-cutting steels not destined to heat treatment are not generally recoended for welding. Notes: UNI 4838 CF 9 SMn 36 DIN SMn36 AFNOR S 300 ISO SMn 35 EN SMn37
5 11SMnPb30 High machinability steel not destined to heat treatment (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Pb % FROM - - 0,90-0,27 0,20 TO 0,14 0,05 1,30 0,11 0,33 0,35 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled Machinability: This steel grade is marked by a good machinability on machine tools and by an easy fragmentation of chips. In order to further improve its machinability, this steel grade can be supplied upon request with Te (tellurium) and Bi (bismuth) addition. Due to the high sulphur and phophorus content free-cutting steels not destined to heat treatment are not generally recoended for welding. Notes: CORRESPONDENCE WITH OTHER STANDARDS (purely as an indication ) : UNI 4838 CF 9 SMnPb 28 DIN SMnPb28 AFNOR S 250 Pb ISO SMnPb 28 EN SMnPb30
6 11SMnPb37 High machinability steel not destined to heat treatment (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Pb % FROM - - 1,00-0,34 0,20 TO 0,14 0,05 1,50 0,11 0,40 0,35 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled PROPERTIES: Machinability: This steel grade is marked by a good machinability on machine tools and by an easy fragmentation of chips. In order to further improve its machinability, this steel grade can be supplied upon request with Te (tellurium) and Bi (bismuth) addition. Due to the high sulphur and phophorus content free-cutting steels not destined to heat treatment are not generally recoended for welding. Notes: UNI 4838 CF 9 SMnPb 36 DIN SMnPb36 AFNOR S 300 Pb ISO SMnPb 35 EN SMnPb37
7 36SMnPb14 High machinability steel for direct hardening (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Pb % FROM 0,32-1,30-0,10 0,15 TO 0,39 0,40 1,70 0,06 0,18 0,35 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled Machinability : This steel grade generally shows a quite good machinability on machine tools; machinability decreases with the increase of carbon, silicon and manganese content. Weldability : Due to the high sulphur and phophorus content free-cutting steels for direct hardening are not recoended for welding. Notes UNI 4838 CF 35 SMnPb 10 AFNOR MF 6 +Pb EN SMnPb14
8 38SMn28 High machinability steel for direct hardening (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,35-1,20-0,24 TO 0,40 0,40 1,50 0,06 0,33 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled PROPERTIES: Machinability : This steel grade generally shows a quite good machinability on machine tools; machinability decreases with the increase of carbon, silicon and manganese content. Weldability : Due to the high sulphur and phophorus content free-cutting steels for direct hardening are not recoended for welding. Notes UNI 4838 / AFNOR / EN SMn28
9 44SMn28 High machinability steel for direct hardening (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,40-1,30-0,24 TO 0,48 0,40 1,70 0,06 0,33 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled PROPERTIES: Machinability : This steel grade generally shows a quite good machinability on machine tools; machinability decreases with the increase of carbon, silicon and manganese content. Weldability : Due to the high sulphur and phophorus content free-cutting steels for direct hardening are not recoended for welding. Notes UNI 4838 CF 44 SMn 28 AFNOR MF 6.3 ISO SMn 28 EN SMn28
10 46S20 High machinability steel for direct hardening (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,42-0,70-0,15 TO 0,50 0,40 1,10 0,06 0,25 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) HB hardness Rp 0, > > > > * Delivery condition: as rolled Machinability : This steel grade generally shows a quite good machinability on machine tools; machinability decreases with the increase of carbon, silicon and manganese content. Weldability : Due to the high sulphur and phophorus content free-cutting steels for direct hardening are not recoended for welding. Notes: ISO S 20 DIN S20 EN S20
11 CASE HARDENING STEELS»16MnCr5»16MnCrS5»16NiCr4»16NiCrS4Pb»
12 16MnCr5 Special alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % FROM 0,14-1, ,80 TO 0,19 0,40 1,30 0,025 0,035 1,10 *MECHANICAL FEATURES: (according to the EN standard) Soft annealed* + peeled rolled (+A +SH ) Soft annealed* + cold drawn ( +A+C ) Hardness maximum HB Hardness maximum HB > > > > * Delivery condition: subjected to a softening treatment according to the maximum hardness prescription. It is a MnCr alloy steel, easily hot machinable and weldable. Hardenability: It has a low hardenability and therefore it can show good core features till thicknesses of about 20. Notes : UNI MnCr5 DIN MnCr5 ISO MnCr5 AFNOR MC5
13 16MnCrS5 Special alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % FROM 0,14-1,00-0,020 0,80 TO 0,19 0,40 1,30 0,025 0,040 1,10 *MECHANICAL FEATURES: (according to the EN standard) Soft annealed* + peeled rolled (+A +SH ) Soft annealed* + cold drawn ( +A+C ) Hardness maximum HB Hardness maximum HB > > > > * Delivery condition: subjected to a softening treatment according to the maximum hardness prescription. Improved machinability: Upon request it can be supplied with improved machinability with Pb (lead) addition, for example Pb=0,15% 0,35% It is a MnCr alloy steel, easily hot machinable and weldable. Hardenability: It has a low hardenability and therefore it can show good core features till thicknesses of about 20. Notes : UNI MnCr5 EN MnCrS5 DIN MnCrS5 ISO MnCrS5 AFNOR MC5
14 16NiCr4 Special alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % FROM 0,13-0, ,60 0,80 TO 0,19 0,40 1,00 0,025 0,035 1,00 1,10 *MECHANICAL FEATURES: (according to the EN standard) Soft annealed* + peeled rolled (+A +SH ) Soft annealed* + cold drawn ( +A+C ) Hardness maximum HB Hardness maximum HB > > > > * Delivery condition: subjected to a softening treatment according to the maximum hardness prescription. Good machinability in the annealed condition and good aptitude / endurance to heat treatment; this steel grade undergoes heat treatment without important deformations. Hardenability: It has a low-medium hardenability enabling the use, with good core resistance, till a thickness of about 50. Notes : UNI CrNi4 AISI - SAE 3115
15 16NiCrS4Pb Special alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Pb % FROM 0,13-0,70-0,020 0,60 0,80 0,15 TO 0,19 0,40 1,00 0,025 0,040 1,00 1,10 0,35 *MECHANICAL FEATURES: (according to the EN standard) Soft annealed* + peeled rolled (+A +SH ) Soft annealed* + cold drawn ( +A+C ) Hardness maximum HB Hardness maximum HB > > > > * Delivery condition: subjected to a softening treatment according to the maximum hardness prescription. Good machinability in the annealed condition and good aptitude / endurance to heat treatment; this steel grade undergoes heat treatment without important deformations. Hardenability: It has a low-medium hardenability enabling the use, with good core resistance, till a thickness of about 50. Notes : UNI CrNi4 EN NiCrS4 AISI - SAE 3115
16 20MnCrS5 Special alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to EN ) C % Si % Mn % P % S % Cr % FROM 0,17-1,10-0,020 1,00 TO 0,22 0,40 1,40 0,025 0,040 1,30 *MECHANICAL FEATURES: (according to EN ) Soft annealed* + peeled rolled (+A +SH ) Soft annealed* + cold drawn ( +A+C ) Hardness HB Maximum Hardness HB Maximum > > > > * Delivery condition: subjected to a softening treatment according to the maximum required hardness. It is a MnCr-alloy steel, easily hot machinable and weldable. Hardenability: It has got a quite good hardenability and therefore it can show good core properties till a thickness of about 40. Notes : Correspondence with other standards ( purely as an indication ) : UNI MnCr5 EN MnCrS5 DIN MnCrS5 ISO MnCrS5 AFNOR MC5
17 C10 Non-alloy steel for general purposes (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,07-0, TO 0,13 0,40 0,60 0,045 0,045 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled It is a soft carbon-steel, easily cold machinable and weldable without any particular precautions. Improved machinability: Upon request it can be supplied with improved machinability with Pb (lead) addition, for example Pb=0,15% 0,35% Notes: UNI 7846 C10 DIN CK10 AFNOR XC10
18 C10E Special non-alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,07-0, TO 0,13 0,40 0,60 0,035 0,035 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) Rp 0,2 cold drawn Minimum > > > > * Delivery condition: as rolled It is a soft carbon-steel, easily cold machinable and weldable without any particular precautions. Improved machinability: Upon request it can be supplied with improved machinability with Pb (lead) addition, for example Pb=0,15% 0,35% Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication ): UNI 7846 C10 DIN CK10 ISO C10 AFNOR XC10
19 C10R Special non-alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,07-0,30-0,020 TO 0,13 0,40 0,60 0,035 0,040 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) Rp 0,2 cold drawn Minimum > > > > * Delivery condition: as rolled It is a soft carbon-steel, easily cold machinable and weldable without any particular precautions. Improved machinability: Upon request it can be supplied with improved machinability with Pb (lead) addition, for example Pb=0,15% 0,35% Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication ): UNI 7846 C10 DIN CK10 ISO C10 AFNOR XC10
20 C15 Non-alloy steel for general purposes (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,12-0, TO 0,18 0,40 0,80 0,045 0,045 *MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled PROPERTIES: It is a soft carbon-steel, easily cold machinable and weldable without any particular precautions. Improved machinability: Upon request it can be supplied with improved machinability with Pb (lead) addition, for example Pb=0,15% 0,35% Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication ): UNI 7846 C15 DIN CK15 AFNOR XC12
21 C15E Special non-alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,12-0, TO 0,18 0,40 0,60 0,035 0,035 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled It is a soft carbon-steel, easily cold machinable and weldable without any particular precautions. Improved machinability: Upon request it can be supplied with improved machinability with Pb (lead) addition, for example Pb=0,15% 0,35% Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication ): UNI 7846 C15 DIN CK15 ISO C15E4 AFNOR XC12
22 C15R Special non-alloy case-hardening steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % FROM 0,12-0,30-0,020 TO 0,18 0,40 0,60 0,035 0,040 *MECHANICAL FEATURES: (according to the EN standard) rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled It is a soft carbon-steel, easily cold machinable and weldable without any particular precautions. Improved machinability: Upon request it can be supplied with improved machinability with Pb (lead) addition, for example Pb=0,15% 0,35% Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication ): UNI 7846 C15 DIN CK15 ISO C15M2 AFNOR XC12
23 NON ALLOY ENGINEERING STEELS»E295GC»E335GC»E360»S235JR»S235JRC»S275JR»S355J2C
24 E295GC Non-alloy steel for structural purposes (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % N % Cu % FROM TO ,045 0,045 0,012 - *MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled. PROPERTIES: Failing any prescriptions concerning chemical composition, no technical data about this steel weldability are available. Notes: EN :2004 E295 EN 10025:90 Fe UNI 7070 Fe 490 DIN St 50-2 NF A A 50-2
25 E335GC Non-alloy steel for structural purposes (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % N % Cu % FROM TO ,045 0,045 0,012 - *MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled. PROPERTIES: Failing any prescriptions concerning chemical composition, no technical data about this steel weldability are available. Notes: EN :2004 E335 EN 10025:90 Fe UNI 7070 Fe 590 DIN St 60-2 NF A A 60-2
26 E360 Non-alloy steel for structural purposes. (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % N % Cu % FROM TO ,045 0,045 0,012 - *MECHANICAL FEATURES: (according to the UNI standard) * Delivery condition: as rolled. PROPERTIES: Rp 0,2 Rm > > > > > > Failing any prescriptions concerning chemical composition, no technical data about this steel weldability are available. Notes: EN :2004 E360 EN 10025:90 Fe UNI 7070 Fe 690 DIN St 70-2 NF A A 70-2
27 S235JR Non-alloy steel for structural purposes (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % For thicknesses in 16 >16 40 >40 Si % Mn % P % S % N % Cu % FROM TO 0,17 0,17 0,20-1,40 0,035 0,035 0,012 0,55 *MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled. This steel grade is generally suitable to welding. Notes: EN 10025:90 Fe 360 BFN DIN RSt 37-2 BS B
28 S235JRC Non-alloy steel for structural purposes (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % For thicknesses in 40 > 40 Si % Mn % P % S % N % Cu % FROM TO 0,17 0,20-1,40 0,040 0,040 0,012 0,55 *MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled. This steel grade is generally suitable to welding. Notes: EN :2004 S235JR
29 S275JR Non-alloy steel for structural purposes. (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % For thicknesses in 16 >16 40 >40 Si % Mn % P % S % N % Cu % FROM TO 0,21 0,21 0,22-1,50 0,035 0,035 0,012 0,55 *MECHANICAL FEATURES: (according to the UNI standard) * Delivery condition: as rolled. Rp 0,2 Rm > > > > > > This steel grade is generally suitable to welding. Notes: EN :2004 S275JR EN 10025:90 Fe 430 B UNI 7070 Fe 430 B DIN St 44-2 NF A E 28-2
30 S355J2C Non-alloy steel for structural purposes (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % For thicknesses in 30 >30 Si % Mn % P % S % N % Cu % FROM TO 0,20 0,22 0,55 1,60 0,030 0,030-0,55 *MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled (+SH ) Rp 0, > > > > * Delivery condition: as rolled. Calculation of the equivalent carbon: CEV = C + Mn + Cr+Mo+V + Ni+Cu This steel grade is generally suitable to welding. Notes: EN :2004 S355J2 UNI 7070 Fe 510 D DIN St 52-3 N BS D8
31 HEAT TREATABLE STEELS»34CrMo4»34CrMoS4»40Crv4»42CrMo4»42CrMoS4»51CrV4»C22»C22E»C22R»C35»C35E»C35R»C40»C40E»C40R»C45»C45E»C45R»C50»C50E»C50R
32 34CrMo4 Special alloy steel (W.NR ) CHEMICAL COMPOSITION: (analysis according to the EN standard) C % Si % Mn % P % S % Cr % Mo % FROM 0,30-0, ,90 0,15 TO 0,37 0,40 0,90 0,025 0,035 1,20 0,30 * MECHANICAL FEATURES: (according to the UNI standard) * Delivery condition: soft annealed. annealed + cold drawn ( +A+C ) maximum > > > Low weldability; this steel grade can be welded only with suitable precautions. Hardenability: Steel grade with medium carbon content showing a poor hardenability; sensitive to notching and to quenching cracks. Notes : CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : UNI CrMo4 DIN CrMo4 ISO CrMo4 AFNOR CD4 AISI-SAE 4135
33 34CrMoS4 Special alloy steel (W.NR ) CHEMICAL COMPOSITION: (analysis according to the EN standard) C % Si % Mn % P % S % Cr % Mo % FROM 0,30-0,60-0,020 0,90 0,15 TO 0,37 0,40 0,90 0,025 0,040 1,20 0,30 * MECHANICAL FEATURES: (according to the UNI standard) * Delivery condition: soft annealed. annealed + cold drawn ( +A+C ) maximum > > > Low weldability; this steel grade can be welded only with suitable precautions. Hardenability: Steel grade with medium carbon content showing a poor hardenability; sensitive to notching and to quenching cracks. Notes : CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : UNI CrMo4 DIN CrMoS4 ISO CrMoS4 AFNOR CD4u AISI-SAE 4135
34 40CrV4 Special alloy steel / CHEMICAL COMPOSITION: (Trafileria Mauri internal analysis) C % Si % Mn % P % S % Cr % Ni % Mo % Al % V FROM 0,36 0,15 0, , ,005 0,11 TO 0,40 0,40 0,65 0,035 0,035 0,85 0,20 0,10 0,020 0,15 * MECHANICAL FEATURES: Annealed + peeled rolled (+A +SH ) annealed + cold drawn ( +A+C ) maximum maximum > > > > * Delivery condition: soft annealed. PROPERTIES: Due to the medium-high carbon content it can be welded with some precautions. It is particularly sensitive to cracks in the heat altered zone. Hardenability: Steel grade with limited hardenability; if suitably treated in convenient sizes (till a thickness of ) it can give very good results. Notes :
35 42CrMo4 Special alloy steel (W.NR ) CHEMICAL COMPOSITION: (analysis according to the EN standard) C % Si % Mn % P % S % Cr % Mo % FROM 0,38-0, ,90 0,15 TO 0,45 0,40 0,90 0,025 0,035 1,20 0,30 * MECHANICAL FEATURES: (according to the EN standard) * Delivery condition: soft annealed. Annealed + cold drawn ( +A+C ) maximum > > > > Bad weldability due to the high crack danger. Hardenability: Medium-good hardenability, suitable for hot purposes till a temperature of 500. It can be hardened in oil. Notes : UNI CrMo4 DIN CrMo4 ISO CrMo4 AFNOR CD4 AISI-SAE 4140
36 42CrMoS4 Special alloy steel (W.NR ) CHEMICAL COMPOSITION: (analysis according to the EN standard) C % Si % Mn % P % S % Cr % Mo % FROM 0,38-0,60-0,020 0,90 0,15 TO 0,45 0,40 0,90 0,025 0,040 1,20 0,30 * MECHANICAL FEATURES: (according to the EN standard) * Delivery condition: soft annealed. annealed + cold drawn ( +A+C ) maximum > > > > Bad weldability due to the high crack danger. Hardenability: Medium-good hardenability, suitable for hot purposes till a temperature of 500. It can be hardened in oil. Notes : UNI CrMo4 DIN CrMoS4 ISO CrMoS4 AFNOR CD4u AISI-SAE 4140
37 51CrV4 Special alloy steel (W.NR ) CHEMICAL COMPOSITION: (analysis according to the EN standard) C % Si % Mn % P % S % Cr % V % FROM 0,47-0, ,90 0,10 TO 0,55 0,40 1,10 0,025 0,035 1,20 0,25 * MECHANICAL FEATURES: (according to the EN standard) * Delivery condition: soft annealed. annealed + cold drawn ( +A+C ) maximum > > Bad weldability due to the high crack danger. Hardenability: Good hardenability; suitable for pieces of small sizes and for exacting purposes. It can be hardened in oil. Notes : UNI CrV4 DIN CrV4 ISO CrV4 AISI/SAE 6150 AFNOR CV4
38 C22 Non-alloy high grade steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN : 98 standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,17-0, TO 0,24 0,40 0,70 0,045 0,045 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the UNI standard) * Delivery condition: as rolled. PROPERTIES : Rp0,2 Rm A5 % > > > > > > Semi-hard, tough carbon-steel, easily machinable by cold-strain. Easily weldable. Hardenability: Extremely low hardenability, used above all for pieces of small section and when deformations due to water-quenching are allowed. Notes : CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : DIN C22
39 C22E Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN : 06 standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,17-0, TO 0,24 0,40 0,70 0,030 0,035 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the UNI standard) * Delivery condition: as rolled. Rp0,2 Rm A5 % > > > > > > Semi-hard, tough carbon-steel, easily machinable by cold-strain. Easily weldable. Hardenability: Extremely low hardenability, used above all for pieces of small section and when deformations due to water-quenching are allowed. Notes : CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : DIN CK22 AFNOR XC18
40 C22R Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN : 06 standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,17-0,40-0, TO 0,24 0,40 0,70 0,030 0,040 0,40 0,40 0,10 0,63 *MECHANICAL FEATURES: (according to the UNI standard) * Delivery condition: as rolled. Rp 0,2 Rm > > > > > > Semi-hard, tough carbon-steel, easily machinable by cold-strain. Easily weldable. Hardenability: Extremely low hardenability, used above all for pieces of small section and when deformations due to water-quenching are allowed. Notes : CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : DIN Cm22 AFNOR XC18u
41 C35 Non-alloy high grade steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,32-0, TO 0,39 0,40 0,80 0,045 0,045 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Improved machinability: In order to improve its machinability, this steel grade can be supplied upon request with Pb (lead) addition, for example Pb=0,15% 0,35% It can be welded quite well without any precautions. Hardenability: Low hardenability; core quenching in water till a diameter of ; as far as bigger diameters are concerned, it hardens only till a certain depth, inversely proportional to diameter, like all nonalloy steels with medium-high carbon content. Notes : UNI 7845 C35 DIN C35 ISO C35 AISI-SAE 1035 AFNOR AF55C35
42 C35E Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,32-0, TO 0,39 0,40 0,80 0,030 0,035 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. It can be welded quite well without any precautions. Hardenability: Low hardenability; core quenching in water till a diameter of ; as far as bigger diameters are concerned, it hardens only till a certain depth, inversely proportional to diameter, like all nonalloy steels with medium-high carbon content. Notes : UNI 7845 C35 DIN CK35 ISO C35E4 AISI-SAE 1035 AFNOR XC38H1
43 C35R Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,32-0,50-0, TO 0,39 0,40 0,80 0,030 0,040 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. It can be welded quite well without any precautions. Hardenability: Low hardenability; core quenching in water till a diameter of ; as far as bigger diameters are concerned, it hardens only till a certain depth, inversely proportional to diameter, like all nonalloy steels with medium-high carbon content. Notes : UNI 7845 C35 DIN Cm35 ISO C35M2 AISI-SAE 1035 AFNOR XC38H1u
44 C40 Non-alloy high grade steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,37-0, TO 0,44 0,40 0,80 0,045 0,045 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Improved machinability: In order to improve its machinability, this steel grade can be supplied upon request with Pb (lead) addition, for example Pb=0,15% 0,35% Due to the medium-high carbon content it can be welded with some precautions. Hardenability: Low hardenability; it shows intermediate features between those of steels with medium and those of steels with high carbon content; therefore it is not easy to obtain the required features by quenching in oil and the quenching in water can result in cracking. Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : UNI 7845 C40 DIN C40 ISO C40 AISI-SAE 1040 AFNOR AF60C40
45 C40E Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,37-0, TO 0,44 0,40 0,80 0,030 0,035 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Due to the medium-high carbon content it can be welded with some precautions. Hardenability: Low hardenability; it shows intermediate features between those of steels with medium and those of steels with high carbon content; therefore it is not easy to obtain the required features by quenching in oil and the quenching in water can result in cracking. Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : UNI 7845 C40 DIN Ck40 ISO C40E4 AISI-SAE 1040 AFNOR XC42H1
46 C40R Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,37-0,50-0, TO 0,44 0,40 0,80 0,030 0,040 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Due to the medium-high carbon content it can be welded with some precautions. Hardenability: Low hardenability; it shows intermediate features between those of steels with medium and those of steels with high carbon content; therefore it is not easy to obtain the required features by quenching in oil and the quenching in water can result in cracking. Notes: CORRESPONDENCE WITH OTHER STANDARDS ( purely as an indication) : UNI 7845 C40 DIN Cm40 ISO C40M2 AISI-SAE 1040 AFNOR XC42H1u
47 C45 Non-alloy high-grade steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,42-0, TO 0,50 0,40 0,80 0,045 0,045 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Improved machinability: In order to improve its machinability, this steel grade can be supplied upon request with Pb (lead) addition, for example Pb=0,15% 0,35% Due to the medium-high carbon content it can be welded with some precautions. Hardenability: It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell. Notes : UNI 7845 C45 DIN C45 ISO C45 AISI-SAE 1045 AFNOR AF65C45
48 C45E Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,42-0, TO 0,50 0,40 0,80 0,030 0,035 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Due to the medium-high carbon content it can be welded with some precautions. Hardenability: It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell. Notes : UNI 7845 C45 DIN Ck45 ISO C45E4 AISI-SAE 1045 AFNOR XC48H1
49 C45R Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,42-0,50-0, TO 0,50 0,40 0,80 0,030 0,040 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Due to the medium-high carbon content it can be welded with some precautions. Hardenability: It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell. Notes : UNI 7845 C45 DIN Cm45 ISO C45M2 AISI-SAE 1045 AFNOR XC48H1u
50 C50 Non-alloy high grade steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN :1999 standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,47-0, TO 0,55 0,40 0,90 0,045 0,045 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN :1999 standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Not weldable. It can be welded only with particular precautions. It has a bad machinability. Hardenability: It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell. Notes : CORRESPONDENCE WITH THE OTHER STANDARDS ( purely as an indication ) : UNI 7845 C50 DIN C50 AISI-SAE 1050
51 C50E Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) 52 standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,47-0, TO 0,55 0,40 0,90 0,030 0,035 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Not weldable. It can be welded only with particular precautions. It has a bad machinability. Hardenability: It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell. Notes : CORRESPONDENCE WITH THE OTHER STANDARDS ( purely as an indication ) : UNI 7845 C50 DIN Ck50 ISO C50E4 AISI-SAE 1050
52 C50R Non-alloy special steel (W. NR ) CHEMICAL COMPOSITION: (heat analysis according to the EN standard) C % Si % Mn % P % S % Cr % Ni % Mo % Cr+Mo+Ni % FROM 0,47-0,60-0, TO 0,55 0,40 0,90 0,030 0,040 0,40 0,40 0,10 0,63 * MECHANICAL FEATURES: (according to the EN standard) Rolled + peeled rolled ( +SH ) Rp 0, > > > > * Delivery condition: as rolled. Not weldable. It can be welded only with particular precautions. It has a bad machinability. Hardenability: It has a low hardenability in water or oil; fit for surface hardening that gives this steel grade a high hardness of the hardened shell. Notes : CORRESPONDENCE WITH THE OTHER STANDARDS ( purely as an indication ) : UNI 7845 C50 DIN Cm50 ISO C50M2 AISI-SAE 1050
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