Hot Rolled 17-4PH Stainless Steel Round Bar with Bright Surface and OD 6-300mm
High-strength precipitation hardening stainless steel round bars with excellent corrosion resistance and mechanical properties.
| Products | 17-4PH Stainless Steel Round Bar |
|---|---|
| Standard | ASTM GB DIN EN |
| Diameter | 8 - 450mm |
| Length | 6m /pcs or cutting as request |
| Finishing | Black Bar / Bright Bar |
| Main Grades | 201, 301, 303Cu, 304, 304L, 309S, 310S, 316L, 316Ti, 317L, 318, 321, 347, 410, 420, 430, 431, 440a/b/c, 904L, 2205, 2507, Hastelloy C276, C4, C22, Inconel 600, 625, Incoloy 800, 825, 825H, etc. |
| Service | Cutting, surface polishing, heat treatment |
| Brand | Walsin, BAOSTEEL, TISCO, QINGSHAN |
17-4PH Precipitation Hardening (Type 630) is a chromium-copper precipitation hardening stainless steel used for applications requiring high strength and moderate corrosion resistance. High strength is maintained to approximately 600°F (316°C).
Alloy 17-4 PH is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance. Mechanical properties can be optimized with heat treatment, achieving very high yield strength up to 1100-1300 MPa (160-190 ksi).
| Applications | Standards |
|---|---|
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Composition of 17-4PH Stainless Steel:
| Grade | C | Mn | Si | P | S | Cr | Ni | Cu | Nb+Ta |
|---|---|---|---|---|---|---|---|---|---|
| 630 | min. - 0.07 max | min. - 1 max | min. - 1 max | min. - 0.04 max | min. - 0.030 max | 15 - 17.5 | 3 - 5 | 3 - 5 | 0.15 - 0.45 |
| Condition | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell C (HR C) | Hardness Brinell (HB) |
|---|---|---|---|---|---|
| Solution Treated | 1105 typ | 1000 typ | 15 typ | 38 max | 363 max |
| Condition 900 | 1310 min | 1170 min | 10 min | 40 min | 388 min |
| Condition 1150 | 930 min | 724 min | 16 min | 28 min | 277 min |
| Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) |
|---|---|---|---|
| 0-100°C: 10.8 0-315°C: 11.6 0-538°C: - |
At 100°C: 18.4 At 500°C: 22.7 |
460 | 800 |
- Engine components
- High strength and boat propeller shafts
- Plastic moulding dies
- Valves and gears
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