17-4PH Precipitation Hardening Stainless Steel Round Bar Hot Rolled Technique OD 6-300mm UNS S17400
Price:
3.43
MOQ:
50
Delivery Time:
Negotiable
Product Description
17-4PH Precipitation Hardening Stainless Steel Round Bar Stock
UNS S17400 / Grade 630 - A chromium-copper precipitation hardening stainless steel offering high strength and moderate corrosion resistance, maintaining performance up to 600°F (316°C).
Product Specifications
| Product | 17-4PH Stainless Steel Round Bar |
| Standard | ASTM, GB, DIN, EN |
| Diameter | 8 - 450mm |
| Length | 6m per piece or custom cutting available |
| Finishing | Black Bar / Bright Bar |
| Service | Cutting, surface polishing, heat treatment |
| Brand | Walsin, BAOSTEEL, TISCO, QINGSHAN |
Material Properties
17-4PH is a precipitation hardening martensitic stainless steel with copper and niobium additions, combining high strength, hardness (up to 572°F/300°C), and corrosion resistance equivalent to Alloy 304 or 430 in many environments.
Key Features: Very high yield strength up to 1100-1300 MPa (160-190 ksi), excellent mechanical properties optimized through heat treatment, and adequate corrosion resistance for industrial applications.
Applications
- Offshore equipment (foils, helicopter deck platforms)
- Food processing industry
- Pulp and paper manufacturing
- Aerospace components (turbine blades)
- Mechanical components
- Nuclear waste casks
- Engine components
- Boat propeller shafts
- Plastic molding dies
- Valves and gears
Standards & Specifications
| Standard | Designation |
|---|---|
| ASTM | A693 grade 630 (AMS 5604B) UNS S17400 |
| EURONORM | 1.4542 X5CrNiCuNb 16-4 |
| AFNOR | Z5 CNU 17-4PH |
| DIN | 1.4542 |
| Japanese JIS | SUS 630 |
Chemical Composition
| Element | Content (%) |
|---|---|
| C | ≤ 0.07 |
| Mn | ≤ 1.00 |
| Si | ≤ 1.00 |
| P | ≤ 0.04 |
| S | ≤ 0.030 |
| Cr | 15.00 - 17.50 |
| Ni | 3.00 - 5.00 |
| Cu | 3.00 - 5.00 |
| Nb+Ta | 0.15 - 0.45 |
Mechanical Properties
| Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|
| 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 |
Physical Properties
| Property | Value |
|---|---|
| Density | 7750 kg/m³ |
| Thermal Conductivity (100°C) | 18.4 W/m·K |
| Thermal Conductivity (500°C) | 22.7 W/m·K |
| Specific Heat | 460 J/kg·K |
| Electrical Resistivity | 800 nΩ·m |
Heat Treatment
Solution Treatment (Condition A): Heat to 1040°C for 0.5 hours, then air-cool to 30°C. Small sections may be oil quenched.
Age Hardening: Performed at low temperatures to achieve required mechanical properties. Optimal aging temperatures:
| Condition | Temperature (°C) | Time (h) | Typical Hardness (HRC) |
|---|---|---|---|
| H900 | 482 | 1 | 44 |
| H925 | 496 | 4 | 42 |
| H1025 | 552 | 4 | 38 |
| H1150 | 621 | 4 | 33 |
Fabrication & Processing
Welding
Can be welded using all conventional methods without pre-heating. Careful design and welding practices are recommended for high-strength applications.
Machining
Best machined in solution-treated condition with machining rates similar to grade 304 stainless steel.
Alternative Material Comparison
| Alternative Grade | Reason for Selection |
|---|---|
| 431 | Higher toughness, better availability in some sizes |
| 416 | Free-machining martensitic steel, lower cost |
| 316 | Higher corrosion resistance but lower strength |
| 2205 | Much better corrosion resistance with moderate strength |
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Company
TSING SHAN STEEL INDUSTRIAL LIMITED
Location
NO.288,Youyi Road Xi Shan Dristrict , Wuxi, Jiangsu, China
Contact Person
Gao Ben