High precipitation 17-7PH/631 stainless steel round bar with random length
Grade 17-7 stainless steel is mostly found in washers and springs.
It is used in applications which require high strength and corrosion resistance
It is also used in intricate parts due its low distortion on heat treatment.
Grade 17-7 stainless steel has forming characteristics similar to that of 301 stainless steel. Intermediate annealing can be done for radical forming operations.
Grade 17-7 stainless steel can be welded using arc and resistance welding techniques. Inert gas shielding is preferred during fusion welding in order to reduce oxidation of aluminum. It is not necessary to perform pre-heating and post-weld annealing processes.
Solution treated material is heavily cold worked which results in condition C material.
Condition C material is heated at 482°C (900°F) for 1 h in condition CH900 followed by cooling. Solution treated material is heated at 955°C (1750°F) for 10 min after fabrication in condition A1750 followed by rapidly cooling at room temperature.
Within 1 h of treating to condition A1750, it is cooled at -73°C (-100°F) for 8 h in condition R100. It is then heated at 510°C (950°F) for 90 min in condition RH 950 followed by cooling. After fabrication, it is heated at 760°C (1400°F) for 90 min in condition T.
Within 60 min of cooling, it is then cooled at 13°C (55°F) for 30 min. From condition T, it is heated at 565°C (1050°F) for 90 min in condition TH1050 followed by cooling.
Grade 17-7 stainless steel can be easily cold worked using common methods in the condition A.
Grade 17-7 stainless steel is annealed at 1066°C (1950°F) for 3 min for 0.1 in. (2.5 mm) of thickness followed by air cooling.
Aging of grade 17-7 stainless steel can be done at 1177°C (2150°F) for 4 h followed by cooling. This process is followed by heating at 1078°C (1975°F) for 4 h and cooling. It is again heated at 844°C (1550°F) for 24 h and cooled, and heated at 760°C (1400°F) for 16 h followed by cooling to complete precipitation hardening process.
Element | Content (%) |
Iron, Fe | 70 - 75% |
Chromium, Cr | 16.0 - 18.0 |
Nickel, Ni | 6.50 - 7.75 |
Silicon, Si | 1.0 |
Manganese, Mn | 1.0 |
Aluminum, Al | 0.75 - 1.50 |
Carbon, C | 0.090 |
Sulfur, S | 0.040 |
Phosphorous, P | 0.040 |
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 |
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 |