Hot Rolled Bright Surface 17-4PH Stainless Steel Round Bar with OD 6-300mm
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).
| 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 |
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).
- Offshore (foils, helicopter deck platforms)
- Food industry
- Pulp and paper industry
- Aerospace (turbine blades)
- Mechanical components
- Nuclear waste casks
- ASTM A693 grade 630 (AMS 5604B) UNS S17400
- EURONORM 1.4542 X5CrNiCuNb 16-4
- AFNOR Z5 CNU 17-4PH
- DIN 1.4542
| Element | Min (%) | Max (%) |
|---|---|---|
| C | - | 0.07 |
| Mn | - | 1.0 |
| Si | - | 1.0 |
| P | - | 0.04 |
| S | - | 0.030 |
| Cr | 15.0 | 17.5 |
| Ni | 3.0 | 5.0 |
| Cu | 3.0 | 5.0 |
| Nb+Ta | 0.15 | 0.45 |
| Condition | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell C (HR C) |
|---|---|---|---|---|
| Solution Treated | 1105 typ | 1000 typ | 15 typ | 38 max |
| Condition 900 | 1310 min | 1170 min | 10 min | 40 min |
| Condition 1150 | 930 min | 724 min | 16 min | 28 min |
| Property | Value |
|---|---|
| Density (kg/m³) | 7750 |
| Mean Co-eff of Thermal Expansion 0-100°C (µm/m/°C) | 10.8 |
| Thermal Conductivity at 100°C (W/m.K) | 18.4 |
| Specific Heat 0-100°C (J/kg.K) | 460 |
| Electrical Resistivity (nΩ.m) | 800 |
Solution treatment (Condition A) - Grade 630 stainless steels are heated at 1040°C for 0.5 h, then air-cooled to 30°C. Small sections can be oil quenched.
Hardening - Grade 630 stainless steels are age-hardened at low temperatures to achieve required mechanical properties.
- Engine components
- High strength and boat propeller shafts
- Plastic moulding dies
- Valves and gears
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