INFORMAZIONI GENERALI / GENERAL INFORMATION LE FLANGE DELLA SOCIETà INTERTUBI SONO FORNITE IN ACCORDO ALLE SEGUENTI NORME: INTERTUBI S FLANGES ARE PROVIDED IN ACCORDING WITH THE FOLLOWINGS STANDARDS Norma del raccordo Fitting standard Descrizione Description Grado di acciaio Steel grade AISI EN Tipologia di raccordi Fittings types Note Notes EN1921 Flange circolari per tubazioni, valvole, raccordi e accessori, designate PN Circular flanges for pipes, velves, fittings and accessories, PN designaled X5CrNi181 X2CrNi189 X5CrNiMo17122 X2CrNiMo17122 P355NH S235JR P245GH P28GH 34 34L 316 316L 1.431 1.437 1.441 1.444 1.565 1.38 1.352 1.426 Flange piane e cieche Flange a collarino Plate and blind flanges Weldingneck flanges Conforme alla PED According to PED LE TABELLE RIPORTATE IN SEGUITO PERMETTONO UN CONFRONTO TRA I DIFFERENTI GRADI DI ACCIAIO SECONDO LA COMPOSIZIONE CHIMICA E LE PROPRIETà MECCANICHE: TABLES SHOWN BELOW ALLOW A COMPARISON BETWEEN THE DIFFERENT STEEL GRADES ACCORDING TO THE CHEMICAL COMPOSITION AND MECHANICAL PROPERTIES: C Si. Mn. X2 CrNi189 1.437,3 1, 2,,45,15 X5 CrNi181 1.431,7 1, 2,,45,15 X5 CrNiMo17122 1.441,7 1, 2,,45,15 X2 CrNiMo17122 1.444,3 1, 2,,45,15 Composizione chimica (analisi di colata) % Chemical composition (heat analysis) S P. Cr Mo Ni N Altri. da 17,5 a 19,5 da 17, a 19,5 da 16,5 a 18,5 da 16,5 a 18,5 da 2, a 2,5 da 2, a 2,5 da 8, a 1, da 8, a 1,5 da 1, a 13, da 1, a 13,,.,.,.,.,2% R p,2 min. Snervamento Yeld point 1,% R p1, min. X2 CrNi189 1.437 2 23 X5 CrNi181 1.431 2 23 X5 CrNiMo17122 1.441 25 24 X2 CrNiMo17122 1.444 19 225 Caratteristiche meccaniche a temperatura ambiente Chemical composition Rottura Tensile strenght R da 5 a 7 da 5 a 7 da 51 a 71 da 49 a 69 Allungamento dopo la rottura Elongation after tensile strenght A l tr, t Resistenza Impact test 2 C 196 C (l) (tr) (tr) 45 35 1 6 6 45 35 1 6 6 45 35 1 6 6 45 35 1 6 6 78
VALORI MINIMI UNITARI DI SNERVAMENTO,2% (R p,2 ) COME DA TABELLA MINIMUM unit values of yeld point as shown in the tables R p,2 min., in, ad una temperatura di: / at a temperature of: 1 C X2 CrNi189 1.437 147 X5 CrNi181 1.431 157 X2 CrNiMo17122 1.444 166 X5 CrNiMo17122 1.441 177 CHEMICAL COMPOSITION % OF GRADE P355NH (1.565) According EN 1224 chemical composition: C <.2;.1 < Si <.5;.9 < Mn < 1.65; Ni <.3;.2 < Al <.6 C Si Mn Ni P S Cr Mo V N Nb Ti Al Cu.18.5 1.1 1.7.5.25.15.3.8.1.12.5.3.2.3 Nb+Ti+V<.12 CHEMICAL COMPOSITION % OF GRADE P355NH (1.565) Nominalthickness (mm): to 6 61 5 1525 Rm Tensile strength (MPa) (+N) 4963 4761 466 4559 Nominalthickness (mm): to 16 164 46 61 5 1525 ReH Minimum yield strength (MPa) (+N) 355 345 335 315 35 295 KV Impact energy (J) transverse, (+N) 2 3 354 +2 395 KV Impact energy (J) longitud 2 445 4765 +2 5575 Nominalthickness (mm): to 6 625 A Min. elongation at fracture (%) (+N) 22 21 Nominal thickness = < 4(mm) C =.17 Nominal thickness = < 4(mm) CEV =.35 CHEMICAL COMPOSITION % OF GRADE S235JR (1.38) C Mn P S N Cu CEV.2 1.4.4.4.12.55.38 79
MECHANICAL PROPERTIES OF GRADE S235JR (1.38) Nominalthickness (mm): to 3 31 5 1525 Rm Tensile strength (MPa) Flat and long products 3651 3651 355 3449 Nominalthickness (mm): to 16 164 463 638 81 5 152 225 ReH Minimum yield strength (MPa) Flat and long products 235 225 215 215 215 195 185 175 KV Impact energy (J) longitud 2 +2 Nominalthickness (mm): to 1.5 1.52 22.5 2.53 A Min. elongation Lo = 8 mm (%) parallel 17 18 19 2 21 Nominalthickness (mm): 34 463 631 5 1525 A Min. elongation Lo = 5,65 So (% )parallel 26 25 24 22 21 PROPERTIES OF GRADE S235JR (1.38) Weldability: This steel grade is generally suitable to welding CHEMICAL COMPOSITION % OF GRADE P245GH (1.352) C Si Mn P S.8.2.4.5 1.3.25.15 MECHANICAL PROPERTIES OF GRADE P245gh (1.352) Rm Tensile strength (MPa) 4153 ReH Minimum yield strength (MPa) 22 245 KV Impact energy (J) longitud KV Impact energy (J) transverse +2 32 +2 A Min. elongation at fracture (%) longitud 25 A Min. elongation at fracture (%) transverse 23 CHEMICAL COMPOSITION % OF GRADE P28gh (1.426) C Si Mn P S.8.2.4.9 1.5.25.15 8
MECHANICAL PROPERTIES OF GRADE P28GH (1.426 ) Rm Tensile strength (MPa) 4658 Nominalthickness (mm): to 35 3516 ReH Minimum yield strength (MPa) 28 255 KV Impact energy (J) longitud +2 48 KV Impact energy (J) transverse +2 A Min. elongation at fracture (%) longitud 23 A Min. elongation at fracture (%) transverse 21 TOLLERANZE / TOLERANCES Dimensione Dimension Diametro esterno Outside diameter of neck A D Diametro del foro Tipo flangia Flange type Bore diameter B 1, B 2, B 3 1, 2 Spessore della parete Wall thickness S C Diametro esterno Outside diameter D 37 37 Tutti gli altri tipi All other types Misura Size DN 125 > DN 125 DN 12 > DN 12 DN 15 > DN 15 DN 1 > DN 1 DN 4 > DN 4 DN 6 > DN 6 DN 1 > DN 1 DN 4 > DN 4 DN 6 > DN 6 Tolleranze / Tolerance mm Machined neck (both faces) + 1, + 1,5 + 2, + 3, + 4,5 + 6, ±,75 % a,. ±,3 mm ± 1 % a,. ± 3, mm +,5 + 1, + 1,5 + 3, 12,5 % a + 15%,5 mm a + 15% DN 15 ± 2, > DN 15 DN 5 ± 3, > DN 5 DN 12 ± 5, > DN 12 DN 18 ± 7, > DN 18 ± 1, Neck one face machined or unmachined + 2, + 2,5 + 3,5 81
Dimensione Dimension Diametro del cerchio dei bulloni Diameter of bolt circle K Interasse dei fori per bulloni adiacenti Centretocentre of adjacent bolt holes Lunghezza attraverso il centro Tipo flangia Flange type Tutti i tipi All types Tutti i tipi All types Length through hub H 1, H 2, H 3, H 4, H 5, 37 Diametro del colletto Neck diameter N 1 Lavorato sulla superficie di tenuta Machined bearing surface Non lavorato sulla superficie di tenuta Unmachined bearing surface Misura Size M1 to M24 M to M45 Tolleranze / Tolerance mm ± 1, ± 1,5 > M45 ± 2, M1 to M24 M to M45 ± 1, ± 1,5 > M45 ± 2, DN 8 ± 1,5 > DN 8 DN 25 ± 2, > DN 25 ± 3, N1 12 N1 > 12 4 N1 > 4 1 N1 > 1 2 N1 > 2 N1 12 N1 > 12 4 N1 > 4 1 N1 > 1 2 N1 > 2 1, 1,2 + 1,6 + 2,5 + 4, 1, + 2, + 4, + 6, + 8, Caratteristiche tecniche Metodo di fabbricazione: forgiate Dimensionimarcaturatolleranze in accordo EN 1921 ACCIAIO INOSSIDABILE E ACCIAIO AL CARBONIO Certificati EN 124/3.1 Technical information Method of manufacture: forged Dimensionsmarketingtolerances according to EN 1921 STAINLESS STEEL AND CARBON STEEL Certificates EN 124/3.1 82