1.4532, X8CRNIMOAL15-7-2, 15-7PH, AISI 632 - MARTENSITIC STAINLESS STEEL ACCORDING TO EN 10088-1:2014 AND ASTM A693

Steel used for valve parts, tanks, CNC parts and tooling in aerospace industry. Resistant to acids and chlorides commonly occuring in river water. Sufficiently resistant to ammonia and nitrogen tetroxide in mild temperature. Rust may occure in a marine atmosphere. The steel has better stress corrosion cracking resistance and resistance to reducing acids and chloride containing pleas than 1.4568 steel. It also has limited resistance to crevice corrosion and pitting. Weldable, but less weldable than 17-4 PH, which is caused by high Al content.
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631 stainless steel plate sizes and specifications
Grade 631
Cold rolled stainless steel plate Thickness: 0.3mm- 16.0mm, Width: 1000mm - 2000mm, Length: as requirements, Surface: 2B/BA/SB/8K/HL/1D/2D etc
Hot rolled stainless steel sheet Thickness: 3.0mm - 300mm, Width: 1000mm - 3000mm Length: as requirements, Surface: No.1/pickling
Standard ASTM A240/A480, ASTM B688, ASTM B463/SB463, ASTM B168/SB168, ASTM B443/SB443/B424/SB424B625/SB625 B575/SB575, JIS G4303, BS 1449, DN17441, G4305
Stainless steel plate Thickness: 8.0mm - 300mm, Width: 1000mm - 3000mm Length: as requirements, Surface: No.1/pickling
631 stainless steel strip sizes and specifications
Grade 631
Cold rolled stainless steel strip Thickness: 0.3mm- 3.0mm, Width: 5mm - 900mm, Surface: 2B/BA/SB/8K/HL/1D/2D etc
Hot rolled stainless steel strip Thickness: 3.0mm - 16mm, Width: 10mm - 900mm Surface: No.1/pickling
Stainless steel foil Thickness: 0.02mm- 0.2mm, Width: Less than 600mm, Surface: 2B
Standard ASTM A240/A480, ASTM B688, ASTM B463/SB463, ASTM B168/SB168, ASTM B443/SB443/B424/SB424B625/SB625 B575/SB575, JIS G4303,  BS 1449, DN17441, G4305
631 stainless steel coil sizes and specifications
Grade 631
Cold rolled stainless steel coil Thickness: 0.3mm- 3.0mm, Width: 1000mm - 2000mm,Surface: 2B/BA/SB/8K/HL/1D/2D etc
Hot rolled stainless steel coil Thickness: 3.0mm - 16mm, Width: 1000mm - 2000mm Surface: No.1/pickling
 Standard ASTM A240/A480, ASTM B688, ASTM B463/SB463, ASTM B168/SB168, ASTM B443/SB443/B424/SB424B625/SB625 B575/SB575, JIS G4303,   BS 1449, DN17441, G4305
631 stainless steel pipe sizes and specifications
Grade 631
Stainless steel seamless pipe Outside diameter: 4.0 - 1219mm, Thickness: 0.5 -100mm,Length: 24000mm
Stainless steel welded pipe Outside diameter: 6.0 - 2800mm, Thickness: 0.3 -45mm,Length: 18000mm
Stainless steel capillary pipe Outside diameter: 0.4 - 16.0mm, Thickness: 0.1 -2.0mm,Length: 18000mm
Stainless steel seamless sanitary pipe Outside diameter: 6.0- 219mm, Thickness: 1.0 -6.0mm
Stainless steel square pipe Side Length: 4*4 - 300*300mm, Thickness: 0.25 - 8.0mm, Length: 18000mm
Stainless steel rectangular pipe Side Length: 4*6 - 200*400mm, Thickness: 0.25 - 8.0mm, Length: 18000mm
Stainless steel coil pipe Outside diameter: 0.4 - 16mm, Thickness: 0.1 - 2.11mm
Standard American Standard: ASTM A312, ASME SA269, ASTM A269, ASME SA213, ASTM A213 ASTM A511 ASTM A789, ASTM A790, ASTM A376, ASME SA335, B161, SB163, SB338, SB667/668 Germany Standard: DIN2462.1-1981, DIN17456-85, DIN17458-85· European Standard: EN10216-5, EN10216-2 Japanese Standard: JIS G3463-2006, JISG3459-2012 Russian Standard: GOST 9941-81
631 stainless steel profile sizes and specifications
Grade 631
Specification EN, DIN, JIS, ASTM, BS, ASME, AISI, ISO
Standard ASTM A276/ASME SA276, ASTM A479/ASME SA479 & ASTM A164/ASME SA164 .
Stainless steel round Bar Diameter: 2mm - 600mm
Stainless steel bright Bar Diameter: 2mm - 600mm
Stainless steel hex Bar Dimension: 6mm - 80mm
Stainless steel square bar Dimension: 3.0 - 180mm
Stainless steel flat bar Thickness: 0.5mm - 200mm, Width: 1.5mm - 250 mm
Stainless steel angle bar as requirements
Length Normally 6m, or produce as requirements
Surface Black, Bright. Peeled and Polished, Solution annealed.
Delivery condition cold drawn, hot rolled, forged, grinding, centerless grinding
Tolerance H8, H9, H10, H11, H12, H13,K9, K10, K11, K12 or as per clients’ requirements
▪ In ambient temperature: Density: 7.79 g/cm3 ▪ Specific heat capacity: 0.5 kJ/(kg*K) ▪ Thermal conductivity: 16 W/(m*K) ▪ Young's modulus E: 200 GPa ▪ At 100°C: Linear expansion coefficient: 41.0 * 10-6/K ▪ Young's modulus E: 195 GPa ▪ At 200°C: Young's modulus E: 185 GPa ▪ At 300°C: Linear expansion coefficient: 14.4 * 10-6/K ▪ Young's modulus E: 175 GPa ▪ At 400°C: Young's modulus E: 170 GPa ▪ AISI 632, 15-7PH, S15700 Alloy mechanical properties: ▪ Annealed: Yield strength Re: > 450 MPa ▪ Tensile strength Rm: > 1035 MPa ▪ Hardness HRB: < 100 ▪ Elongation A: > 25 %
Standard Chemical composition %
C: Si: Mn: P: S: Cr: Mo: Al: Ni:
EN 1.4532 - X8CrNiMoAl15-7-2
<0.1 <0.7 <1.2 <0.04 <0.015 14.0-16.0 2.0-3.0 0.7-1.50 6.50-7.80
NF Z10CNDA15-07
<0.1 <0.75 <1.2 <0.04 <0.015 14.0-16.0 2.0-3.0 0.75-1.50 6.50-7.75
NF Z9CNDA15-07
<0.09 <0.75 <1.0 <0.035 <0.025 14.0-16.0 2.0-3.0 0.75-1.50 6.50-7.75
LW 1.4574
<0.09 <1.0 <1.0 <0.04 <0.03 14.0-16.0 2.0-3.0 0.75-1.50 6.50-7.75
ASTM 15-7PH / PH15-7Mo - AISI 632 - UNS S15700
<0.09 <1.0 <1.0 <0.04 <0.03 14.0-16.0 2.0-3.0 0.75-1.50 6.50-7.70
Properties Metric Imperial
Tensile strength 1275 MPa 184900 psi
Yield strength 1030 MPa 149000 psi
Fracture toughness (longitudinal, 44 HRC) 76 MPa-m½ 69.2 ksi-in½
Elastic modulus 204 GPa 29588 ksi
Poisson's ratio 0.27-0.30 0.27-0.30
Elongation at break 6% 6%
Reduction of area 10% 10%
Hardness, Rockwell C 41 41
▪ Yield strength Re: > 1380 MPa ▪ Tensile strength Rm: > 1550 MPa ▪ Elongation A: > 2 % ▪ Hardness HRC: > 46 ▪ Thickness: 0.251 - 0.505 mm ▪ Yield strength Re: > 1380 MPa ▪ Tensile strength Rm: > 1550 MPa ▪ Elongation A: > 3 % ▪ Hardness HRC: > 46 ▪ Thickness: 0.51 - 4.76 mm ▪ Yield strength Re: > 1380 MPa ▪ Tensile strength Rm: > 1550 MPa ▪ Elongation A: > 4 % ▪ Hardness H> 4 % ▪ Hardness HRC: > 45 ▪ Hardness HB: > 429 ▪ Percent reduction of area Z: > 20 % ▪ Cold rolled at mill CH900 = 900F (482°C): ▪ Thickness: 0.038 - 0.130 mm ▪ Yield strength Re: > 1585 MPa ▪ Tensile Strength Rm: > 1655 MPa ▪ Elongation A: > 1 % ▪ Hardness HRC: > 46 ▪ Yield strength Re: > 1380 MPa ▪ Tensile strength Rm: > 1550 MPa ▪ Elongation A: > 1 % ▪ Hardness HRC: > 46 ▪ Thickness: 0.127 - 0.251 mm▪ Thickness: 0.038 - 0.124 mm ▪ Yield strength Re: > 1170 MPa ▪ Tensile strength Rm: > 1310 MPa ▪ Elongation A: > 2 % ▪ Hardness HRC: > 40 ▪ Thickness: 0.127 - 0.251 mm ▪ Yield strength Re: > 1170 MPa ▪ Tensile strength Rm: > 1310 MPa ▪ Elongation A: > 3 % ▪ Hardness HRC: > 40 ▪ Thickness: 0.251-0.505 mm ▪ Yield strength Re: > 1170 MPa ▪ Tensile strength Rm: > 1310 MPa ▪ Elongation A: > 4 % ▪ Hardness HRC: > 40 ▪ Thickness: 0.51 - 4.76 mm ▪ Yield strength Re: > 1170 MPa ▪ Tensile strength Rm: > 1310 MPa ▪ Elongation A: > 5 % ▪ Hardness HRC: > 40 ▪ Thickness: 4.762 - 15.880 mm ▪ Yield strength Re: > 1170 MPa ▪ Tensile strength Rm: > 1310 MPa ▪ Elongation A: > 4 % ▪ Hardness HRC: > 40 ▪ Hardness HB: > 40 ▪ Percent reduction of area Z: > 20 % ▪ Precipitation Hardened RH950 (954°C + 73°C + 510°C): ▪ Thickness: 0.038 - 0.124 mm ▪ Yield strength Re (954°C + 73°C + 510°C): ▪ Thickness: 0.038 - 0.124 mm

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