Hot Rolled Square Steel Bars

Transcription

1 Page 1 of 16 Viale Certosa, Milano Tel: Fax: Mail: commerciale.riva@rivagroup.com Production Units: Cerveno (BS), Italy

2 Page 2 of 16 Products STRUCTURAL AND GENERAL USE NON-ALLOY QUALITY STEEL EN CASE HARDENING CARBON AND ALLOY SPECIAL STEELS EN 10084/08 UNI 7846 QUENCHED AND TEMPERED CARBON AND ALLOY SPECIAL STEELS UNI EN /06 UNI 7845 UNI 7847 QUENCHED AND TEMPERED QUALITY CARBON STEEL UNI /06 Products Dimensions mm Progression mm Tolerance Square Bars ,5 3,5 ± 1 1,8% 3 12 Length m STANDARD DIMENSIONS SECTION SIDE (mm) 30-31, , , , , , , , ,5-104 OUT OF STANDARD DIMENSIONS Section side in inches in the range mm LENGTH Lenght in as rolled condition: 3 12 m Lenght in annealed condition: max 9,20 m ENDS APPEARANCE Sections 30 41,5 mm shear cut with plane knives Sections mm shear cut with shaped knives SIZE TOLERANCE Conforming to UNI EN SURFACE FINISHING Upon request, sandblasted bars of 3-12 m length may be supplied.

3 Page 3 of 16 SQUARE BARS METRIC WEIGHT Squares Squares Squares Squares mm mm mm mm Kg/m Kg/m Kg/m Kg/m 18 2, , , , , , , , ,14 36,5 10, , , , ,75 56,5 25, , , , , , , , , , , ,56 61,5 29, , ,91 41,5 13, , , , , , , , , , , , ,90 66,5 34, , , , , , ,06 46,5 16, , ,50 31,5 7, , ,69 102,5 82, , , , , , , , ,07 51,5 20, ,54 - -

4 Page 4 of 16 General Supply Condition PRODUCTION CAMPAIGN Rolled Production (square) 40 days LENGTH COMMERCIAL: 4,50 8 m, with increased 1 m FIXED: According to the product, with increase 200 mm CROP BAR END: If agreed on order, 3 m per 15 % of the quantity. MINIMUM QUANTITY PER ORDER - square bars in carbon, general use or alloy steel - other steel grades 5 ton 80 ton WEIGHT TOLERANCES ON THE ORDERED QUANTITY - for orders 5 ton - for orders > 5 25 ton - for orders > 25 ton ± 20 % ± 10 % ± 6 % PACKING BUNDLE WEIGHT: rolled products 2 3 ton WRAPPINGS: By wire rod Ø 7 mm; N 4 wrapping per bundle MARKING: Bundle identifi cation label, reporting heat number, steel quality, order number, dimensions, weight.

5 Page 5 of 16 Quality Conditions SURFACE DEFECTS Defects are allowed up to a depth 0,8 % of the diameter or the section side, with min. 0,3 mm and max 0,6 mm in conforming to the following standards: - ISO class 2 - EN class B - NF A class 2 - UNI class A INTERNAL DEFECTS Macrocleanliness 2 grade according S.E.P standard Microcleanliness 2,5 grade according ASTM E 45 or by K method according to values foreseen by the EN , App E Macroetch test according to ASTM E 381 C3-R2-S2 Structure segregation Grado IV according to UNI 8449 standard Above conditions may be signifi cantly enhanced with vacuum-degassed steels as per special specifi cations and applications requirements. AUSTENITIC GRAIN SIZE FOR SPECIAL STEELS by Al + Ti grain 5 8 o 6 9 conformng to EN ISO 643, UNI 3245 o ASTM E112 QUALITY ASSURANCE ISO Certifi cation - Quality Management Systems ISO Certifi cation - Environmental management system ISO BH OHSAS Certifi cation - occupational health and safety management system INSPECTION CERTIFICATES B conforming to EN standard - TÜV AD WO/TRD100 and 97/23/EC (PED) directive, steel products for pressure vessels equipment - CE mark for rolled products for structural use

6 Page 6 of 16 STRUCTURAL AND GENERAL USE NON-ALLOY QUALITY STEEL EN DESCRIPTION AND APPLICATIONS Non alloy quality steel suitable for the manufacturing of structural elements, as welded, bolted and riveted structures for room temperature applications. EN QUALITIES AND MAIN CORRESPONDING INTERNATIONAL STANDARD EN EN Italy UNI EN Germany DIN France AFNOR NF A G.B. B.S Spain UNE U.S.A. ASTM S235JR S235JRG2 Fe 360 B RSt B AE 235 B-FN - S235J0 S235J0 Fe 360 C St 37-3U E C AE 235 C - S235J2 S235J2G3 Fe 360 D St 37-3N E D AE 235 D - - S235J2G S275JR S275JR Fe 430 B St 44-2 E B AE 275 B A 36/A 283D S275J0 S275J0 Fe 430 C St 44-3U E C AE 275 C - S275J2 S275J2G3 Fe 430 D St 44-3N E D AE 275 D A 633 GR. A - S275J2G S355JR S355JR Fe 510 B - E B AE 355 B A 572 GR.50/A 678 GR.A S355J0 S355J0 Fe 510 C St 52-3U E C AE 355 C - S355J2 S355J2G3 Fe 510 D St 52-3N - 50 D AE 355 D - - S355J2G S355K2 S355K2G3 Fe 510 DD1 - E DD S355K2G E295 E295 Fe 490 St 50-2 A A E355 E355 Fe 590 St 60-2 A A E360 E360 Fe 690 St 70-2 A A S450JO C - - IMPORTANT: Correspondance based on minimum strength value (Rm) and on impact test temperature.

7 Page 7 of 16 HEAT CHEMICAL COMPOSITION Quality N C % Nominal Thickness (mm) 16 > > 40 S235JR ,170 0,170 0,200 1,400-0,035 0,035 0,012 S235J ,170 0,170 0,170 1,400-0,030 0,030 0,012 S235J ,170 0,170 0,170 1,400-0,025 0,025 - S275JR ,210 0,210 0,220 1,500-0,035 0,035 0,012 S275J ,180 0,180 0,180 1,500-0,030 0,030 0,012 S275J ,180 0,180 0,180 1,500-0,025 0,025 - S355JR ,240 0,240 0,240 1,600 0,550 0,035 0,035 0,012 S355J ,200 0,200 0,220 1,600 0,550 0,030 0,030 0,012 S355J ,200 0,200 0,220 1,600 0,550 0,025 0,025 - S355K ,200 0,200 0,220 1,600 0,550 0,025 0,025 - E ,045 0,045 0,009 E ,045 0,045 0,009 E ,045 0,045 0,009 S450JO* ,200 0,200 0,220 1,700 0,550 0,090 0,090 0,025 IMPORTANT: Limit on N content does not apply when minimum tot Al content is 0,20% or when other N binding elements are present. (*) Microalloyed with Nb max 0,05%, V max 0,13% and Ti max 0,05%. Mn % Si % P % S % N %

8 Page 8 of 16 MECHANICAL PROPERTIES ReH ( ) Rm ( )* Impact Strength KVL(J) Min Quality 16 > > > > Nominal Thickness (mm) > > > > > Temp. C Nominal Thickness (mm) S235JR S235J S235J S275JR S275J S275J S355JR S355J S355J S355K E E E S450JO (*) The tensile tests values apply to longitudinal specimens (l). For fl at products of 600 mm width transverse ones (t) are to be used. A 5 % Min > > Quality Nominal Thickness (mm) S235JR S235J0 S235J2G4 S275JR S275JO S275J2G4 S355JR S355J0 S355J2 S355K2 40 > > > > E E E S450JO

9 Page 9 of 16 CASE HARDENING CARBON AND ALLOY SPECIAL STEELS EN 10084/08 UNI 7846 DESCRIPTION AND APPLICATIONS Other qualities conforming to the above standards have been omitted, being out of current use. Qualities up to a max. alloy content of 3% may be produced. HEAT CHEMICAL COMPOSITION Quality N C % Mn % Si % P % S % Cr % Ni % Mo % C10E ,07 0,13 0,30 0,60 0,40 0,035 0, C10R ,07 0,13 0,30 0,60 0,40 0,035 0,020 0, C15E ,12 0,18 0,30 0,60 0,40 0,035 0, C15R ,12 0,18 0,30 0,60 0,40 0,035 0,020 0, C16E ,12 0,18 0,60 0,90 0,40 0,035 0, C16R ,12 0,18 0,60 0,90 0,40 0,035 0,020 0, MnCr ,14 0,19 1,00 1,30 0,40 0,035 0,035 0,80 1, MnCrS ,14 0,19 1,00 1,30 0,40 0,035 0,020 0,040 0,80 1, MnCr ,17 0,22 1,10 1,40 0,40 0,035 0,035 1,00 1, MnCrS ,17 0,22 1,10 1,40 0,40 0,035 0,020 0,040 1,00 1, CrNi4-0,13 0,18 0,70 1,00 0,15 0,40 0,035 0,035 0,80 1,10 0,80 1,10-16CrNiS4-0,13 0,18 0,70 1,00 0,15 0,40 0,035 0,020 0,035 0,80 1,10 0,80 1,10-20CrNi4-0,18 0,23 0,80 1,10 0,15 0,40 0,035 0,035 0,90 1,20 0,90 1,20-20CrNiS4-0,18 0,23 0,80 1,10 0,15 0,40 0,035 0,020 0,035 0,90 1,20 0,90 1,20-20NiCrMo ,17 0,23 0,65 0,95 0,40 0,035 0,035 0,35 0,70 0,40 0,70 0,15 0,25 20NiCrMoS ,17 0,23 0,65 0,95 0,40 0,035 0,020 0,040 0,35 0,70 0,40 0,70 0,15 0,25 18CrMo ,15 0,21 0,60 0,90 0,40 0,035 0,035 0,90 1,20-0,15 0,25 18CrMoS ,15 0,21 0,60 0,90 0,40 0,035 0,020 0,040 0,90 1,20-0,15 0,25 18NiCrMo5-0,15 0,21 0,60 0,90 0,40 0,035 0,035 0,70 1,00 1,20 1,50 0,15 0,25 18NiCrMoS5-0,15 0,21 0,60 0,90 0,40 0,035 0,020 0,035 0,70 1,00 1,20 1,50 0,15 0,25 IMPORTANT : Processing at austenitic grain 5 or fi ner, conforming to ISO 643 standard. On request: grain 6 or fi ner.

10 Page 10 of 16 HARDNESS LIMITS AT JOMINY HARDENABILITY TEST (H TYPES) Quality 16MnCr5 16MnCrS5 20MnCr5 20MnCrS5 16CrNi4 16CrNiS4 20CrNi4 20CrNiS4 20NiCrMo2.2 20NiCrMoS2.2 18CrMo4 18CrMoS4 18NiCrMo5 18NiCrMoS5 IMPORTANT : HRc Hardness from Quenched End of Test Piece (mm) 1, /47 36/46 31/44 28/41 24/39 21/ /49 36/48 33/46 30/43 28/42 26/41 25/39 23/37 21/ /47 35,5/ 45,5 40/50 38,5/ 49 33/44 30/42 28/40 26/38 24/36 22/35 19/32 36,5/ 48 17/ 29,5 34/47 32/45 29/44 27/42 25,5/ 41 23/38 21/ , , ,5/ 33 18/32 17/31 16/ 30,5 15/30 41/49 37/48 31/45 25/42 22/36 20/ /47 37/46 34/45 30/42 27/39 24/37 22/35 21/ /49 38/ 48,5 36/48 34/ 46,5 31/45 29/ 43,5 27/41 25,5/ 40 23/37 21/ 35,5 20,5/ 34,5 20/ 33, ,5 32 On request all the qualities can be processed with restricted hardenability at 2/3 of standard H range, that is HL (2/3 inferior) and HH (2/3 superior) types. Reference for Jominy test: ISO 642 standard.

11 Page 11 of 16 QUENCHED AND TEMPERED CARBON AND ALLOY SPECIAL STEELS UNI EN /06 UNI 7845 UNI 7847 DESCRIPTION AND APPLICATIONS Other qualities conforming to the above standards have been omitted, being out of current use. Qualities up to a max. alloy content of 3% may be produced. UNI 7847 standard refers to steel for surface hardening, not included in the UNI EN standard, even if some similar qualities are mentioned (for instance: C35E - 46Cr2). HEAT CHEMICAL COMPOSITION Quality N C % Mn % Si % P % S % Cr % Mo % C22E ,17 0,24 0,40 0,70 0,40 0,03 0,035 0,040 0,010 C22R ,17 0,24 0,40 0,70 0,40 0,03 0,020 0,040 0,040 0,010 C35E ,32 0,39 0,50 0,80 0,40 0,03 0,035 0,040 0,010 C35R ,32 0,39 0,50 0,80 0,40 0,03 0,020 0,040 0,040 0,010 C40E ,37 0,44 0,50 0,80 0,40 0,03 0,035 0,040 0,010 C40R ,37 0,44 0,50 0,80 0,40 0,03 0,020 0,040 0,040 0,010 C45E ,42 0,50 0,50 0,80 0,40 0,03 0,035 0,040 0,010 C45R ,42 0,50 0,50 0,80 0,40 0,03 0,020 0,040 0,040 0,010 C50E ,47 0,55 0,60 0,90 0,40 0,03 0,035 0,040 0,010 C50R ,47 0,55 0,60 0,90 0,40 0,03 0,020 0,040 0,040 0,010 C55E ,52 0,60 0,60 0,90 0,40 0,03 0,035 0,040 0,010 C55R ,52 0,60 0,60 0,90 0,40 0,03 0,020 0,040 0,040 0,010 C60E ,57 0,65 0,60 0,90 0,40 0,03 0,035 0,040 0,010 C60R ,57 0,65 0,60 0,90 0,40 0,03 0,020 0,040 0,040 0,010 28Mn ,25 0,32 1,30 1,65 0,40 0,03 0,035 0,040 0,010 IMPORTANT: Processing at austenitic grain 5 or fi ner, conforming to ISO 643 standard. Quality N C % Mn % Si % P % S % Cr % Mo % 34Cr ,30 0,37 0,60 0,90 0,40 0,025 0,035 0,90 1,20-34CrS ,30 0,37 0,60 0,90 0,40 0,025 0,020 0,040 0,90 1,20-37Cr ,34 0,41 0,60 0,90 0,40 0,025 0,035 0,90 1,20-37CrS ,34 0,41 0,60 0,90 0,40 0,025 0,020 0,040 0,90 1,20-41Cr ,38 0,45 0,60 0,90 0,40 0,025 0,035 0,90 1,20-41CrS ,38 0,45 0,60 0,90 0,40 0,025 0,020 0,040 0,90 1,20-25CrMo ,22 0,29 0,60 0,90 0,40 0,025 0,035 0,90 1,20 0,15 0,30 25CrMoS ,22 0,29 0,60 0,90 0,40 0,025 0,020 0,040 0,90 1,20 0,15 0,30 34CrMo ,30 0,37 0,60 0,90 0,40 0,025 0,035 0,90 1,20 0,15 0,30 34CrMoS ,30 0,37 0,60 0,90 0,40 0,025 0,020 0,040 0,90 1,20 0,15 0,30 42CrMo ,38 0,45 0,60 0,90 0,40 0,025 0,035 0,90 1,20 0,15 0,30 42CrMoS ,38 0,45 0,60 0,90 0,40 0,025 0,020 0,040 0,90 1,20 0,15 0,30 50CrMo ,46 0,54 0,50 0,80 0,40 0,025 0,035 0,90 1,20 0,15 0,30 IMPORTANT: Processing at austenitic grain 5 or fi ner, conforming to ISO 643 standard.

12 Page 12 of 16 HARDNESS LIMITS AT JOMINY HARDENABILITY TEST (H TYPES) Quality C35E C35R C40E C40R C45E C45R C50E C50R C55E C55R C60E C60R HRc Hardness from Quenched End of Test Specimen (mm) 1, /58 33/55 22/ /60 35/59 25/53 23/39 21/ /62 37/61 28/57 26/44 24/34 22/32 21/31 20/ /63 44/61 31/58 30/50 28/36 26/34 25/33 24/32 23/31 20/ /65 47/63 33/60 31/52 29/37 27/35 26/34 25/33 24/32 22/30 20/ /67 50/65 35/62 32/54 30/39 28/36 27/35 26/34 25/33 23/31 21/ Mn6 45/54 42/53 37/51 27/48 21/ Cr4 34CrS4 49/57 48/57 45/56 41/54 35/52 32/49 29/46 27/44 23/39 21/37 20/ Cr4 37CrS4 51/59 50/59 48/58 44/57 39/55 36/52 33/50 31/48 26/42 24/39 22/37 20/ Cr4 41CrS4 53/61 52/61 50/60 47/59 41/58 37/56 34/54 32/52 29/46 26/42 23/40 21/ CrMo4 25CrMoS4 44/52 43/52 40/51 37/50 34/48 32/46 29/43 27/41 23/37 21/35 20/ CrMo4 34CrMoS4 49/57 49/57 48/57 45/56 42/55 39/54 36/53 34/52 30/48 28/45 27/43 26/41 25/40 24/40 24/39 42CrMo4 42CrMoS4 53/61 53/61 52/61 51/60 49/60 43/59 40/59 37/58 34/56 32/53 31/51 30/48 30/47 29/46 29/45 50CrMo4 58/65 58/65 57/64 55/64 54/63 53/63 51/63 48/62 45/61 41/60 39/58 38/57 37/55 36/54 36/54 IMPORTANT: On request all the qualities can be manufactured with restricted hardenability at 2/3 of standard H range, that is HL (2/3 inferior) and HH (2/3 superior) types. Reference forjominy test: EN ISO 642 standard.

13 Page 13 of 16 MECHANICAL PROPERTIES IN THE QUENCHED AND TEMPERED CONDITION (*) Quality Rm Tensile Test Impact Test Heat Treatment Re Min A 5 Min % Z Min % KV 20 Min J Quenching (1) C Tempering C C22E ± ± 660 C22R ± ± 660 C35E ± ± 660 C35R ± ± 660 C40E ± ± 660 C40R ± ± 660 C45E ± ± 660 C45R ± ± 660 C50E ± ± 660 C50R ± ± 660 C55E ± ± 660 C55R ± ± 660 C60E ± 660 C60R ± ± Mn ± ± Cr ± ± 70 34CrS ± ± 70 37Cr ± ± 70 37CrS ± ± 70 41Cr ± ± 70 41CrS ± ± 70 25CrMo ± ± 70 25CrMoS ± ± 70 34CrMo ± ± 70 34CrMoS ± ± 70 42CrMo ± ± 70 42CrMoS ± ± 70 50CrMo ± ± 70 42CrMoS ± ± 70 50CrMo (30) 840 ± ± 70 (*) The tensile test values apply to reference specimens Ø16 mm IMPORTANT: (1) Quenching: in water for qualities C22 C45 and 28Mn6; in oil for qualities C50 C60 and 34Cr4 50CrMo4

14 Page 14 of 16 MECHANICAL PROPERTIES IN THE NORMALIZED CONDITION Quality Rm Min On Reference Specimen Ø 16 mm Re Min A 5 Min % Tensile Test Rm Min On Rolled Product Ø or Thickness mm Re Min A 5 Min % Normalization C C22E ± 940 C22R ± 940 C35E ± 920 C35R ± 520 C40E ± 510 C40R ± 910 C45E ± 900 C45R ± 900 C50E ± 890 C50R ± 890 C55E ± 885 C55R ± 885 C60E ± 880 C60R ± Mn ± 890 IMPORTANT: The normalization may be substituted by a controlled rolling. (Reference: Table 1 EN standard). Table values conform to the following standard: EN UNI 7845 ANNEALING AND SOFTENING HEAT TREATAMENTS HB Brinell Hardness ~ Rm Case Hardening Quenched and Tempered Steel MnCr5 18CrMo CrMo MnCr5 16CrNi CrNi4 C50 28Mn6 34Cr4 34CrMo NiCrMo5 C55 41Cr Cr C60 42CrMo CrMo4 Table values conform to the following standards: EN UNI EN EN UNI length of rolled material: 9,20 m.

15 Page 15 of 16 QUENCHED AND TEMPERED QUALITY CARBON STEEL UNI /06 DESCRIPTION AND APPLICATIONS Other qualities conforming to the above standards have been omitted, being out of current use. HEAT CHEMICAL COMPOSITION Quality N C % Mn % Si % P % S % C ,32 0,39 0,50 0,80 0,40 0,045 0,045 C ,37 0,44 0,50 0,80 0,40 0,045 0,045 C ,42 0,50 0,50 0,80 0,40 0,045 0,045 C ,52 0,60 0,60 0,90 0,40 0,045 0,045 C ,57 0,65 0,60 0,90 0,40 0,045 0,045 MECHANICAL PROPERTIES IN THE NORMALIZED CONDITION Tensile Test Normalization Quality Rm Min On Rolled Product Ø or Thickness > mm Re Min A 5 Min % Rm Min On Rolled Product Ø or Thickness > mm Re Min C ± 920 C ± 910 C ± 900 C ± 885 C ± 880 A 5 Min % C Important: The normalization may be substituted by a controlled rolling. (Reference Table 1 EN standard). MECHANICAL PROPERTIES IN THE QUENCHED AND TEMPERED CONDITION (*) Quality Rm Tensile test Re Min Quenching A 5 Min % Z Min Heat Treatment Tempering C ± ± 660 C ± ± 660 C ± ± 660 C ± ± 660 C ± ± 660 (*) The tensile test values apply to reference specimens Ø 16 mm. IMPORTANT: (1) Quenching: in water for qualities C35 C45; in oil for qualities C55 C60.

16 Page 16 of 16 DELIVERIES IN ANNEALED CONDITIONS HB Brinell Hardness ~ Rm Case hardening steels Quench and tempering steels MNCR5 18CRMO CRMO MNCR5 16CRNI CRNI4 C50 28MN6 34CR4 34CRMO NICRMO5 C55 41CR CR C60 42CRMO CRMO4 Table values comform to the following standards: Table values comform to the following standards length of rolled material: 9,20 m.