Hot Rolled 17-4PH Stainless Steel Round Bar with Bright Surface and OD 6-300mm
Price:
US $3.23-3.72 / kg
MOQ:
50 kg
Delivery Time:
Negotiable
Product Description
17-4PH (630) Stainless Steel Round Bar
High-performance precipitation hardening stainless steel round bars offering exceptional strength and corrosion resistance for demanding industrial applications.
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 |
| Available 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 |
| Services | Cutting, surface polishing, heat treatment |
| Brand | Walsin, BAOSTEEL, TISCO, QINGSHAN |
Material Overview
17-4PH Precipitation Hardening (Type 630) is a chromium-copper precipitation hardening stainless steel designed for applications requiring high strength and moderate corrosion resistance. This material maintains high strength up to approximately 600°F (316°C).
Key Properties
Alloy 17-4 PH combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance. Mechanical properties can be optimized through heat treatment, achieving very high yield strength up to 1100-1300 MPa (160-190 ksi).
Applications & Standards
| Applications | Standards |
|---|---|
|
|
Chemical Composition
Composition ranges for grade 630 stainless steel:
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.07 max |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 1.0 max |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.030 max |
| Chromium (Cr) | 15.0 - 17.5 |
| Nickel (Ni) | 3.0 - 5.0 |
| Copper (Cu) | 3.0 - 5.0 |
| Niobium+Tantalum (Nb+Ta) | 0.15 - 0.45 |
Mechanical Properties
| Condition | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell C (HRC) |
|---|---|---|---|---|
| Solution Treated | 1105 (typical) | 1000 (typical) | 15 (typical) | 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 (0-100°C) | 460 J/kg·K |
| Electrical Resistivity | 800 nΩ·m |
Alternative Grade Comparison
| Alternative Grade | Comparison to 17-4PH |
|---|---|
| 431 | Higher toughness, better availability in some sizes |
| 416 | Free-machining martensitic stainless steel, better for repetition machining, lower cost |
| 316 | Higher corrosion resistance but much lower strength |
| 2205 | Much better corrosion resistance with lower strength (but not as low as 316) |
Heat Treatment
Solution treatment involves heating at 1040°C for 0.5 hours followed by air cooling to 30°C. Age hardening at various temperatures achieves required mechanical properties:
| Condition | Hardening Temp (°C) | Time (h) | Typical Hardness (HRC) | Tensile Strength (MPa) |
|---|---|---|---|---|
| A | Annealed | - | 36 | 1100 |
| H900 | 482 | 1 | 44 | - |
| H925 | 496 | 4 | 42 | 1170-1320 |
| H1150 | 621 | 4 | 33 | 930-1080 |
Processing Characteristics
Welding
Grade 630 stainless steels can be welded using all conventional methods without requiring pre-heating. Proper design considerations are essential to prevent weldment stresses.
Machining
These steels can be machined in their solution-treated condition with machining rates similar to grade 304 stainless steels.
Product Images
Primary Applications
- Engine components
- High-strength boat propeller shafts
- Plastic molding dies
- Valves and gears
- Aerospace components
- Nuclear industry equipment
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben