Hot Rolled 17-4PH Stainless Steel Round Bar with Bright Surface and OD 6-300mm
Price:
US $3.17-3.66 / kg
MOQ:
50 kg
Delivery Time:
Negotiable
Product Description
Grade 630 Stainless Steel Round Bar
Diameter range: 10 - 300mm | Also known as 17-4PH Stainless Steel
Product Specifications
| Product | 17-4PH Stainless Steel Round Bar |
|---|---|
| Standard | ASTM GB DIN EN |
| Diameter | 8 - 450mm |
| Length | 6m /pcs or cutting as requested |
| 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 |
Material Description
17-4PH Stainless Steel (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).
General Properties
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
Applications:
- Offshore (foils, helicopter deck platforms)
- Food industry
- Pulp and paper industry
- Aerospace (turbine blades)
- Mechanical components
- Nuclear waste casks
Standards:
- ASTM A693 grade 630 (AMS 5604B) UNS S17400
- EURONORM 1.4542 X5CrNiCuNb 16-4
- AFNOR Z5 CNU 17-4PH
- DIN 1.4542
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Ni | Cu | Nb+Ta |
|---|---|---|---|---|---|---|---|---|---|
| 630 | ≤0.07 | ≤1 | ≤1 | ≤0.04 | ≤0.030 | 15-17.5 | 3-5 | 3-5 | 0.15-0.45 |
Mechanical Properties
| 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 |
Physical Properties
| Property | Value |
|---|---|
| Density | 7750 kg/m³ |
| Mean Co-eff of Thermal Expansion (0-100°C) | 10.8 µm/m/°C |
| Thermal Conductivity (at 100°C) | 18.4 W/m.K |
| Specific Heat (0-100°C) | 460 J/kg.K |
| Electrical Resistivity | 800 nΩ.m |
Grade Specifications
| Grade | UNS No | Euronorm | Japanese JIS |
|---|---|---|---|
| 630 | S17400 | 1.4542 X5CrNiCuNb16-4 | SUS 630 |
Alternative Grades Comparison
| 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) |
Technical Characteristics
Corrosion Resistance
Grade 630 stainless steels have good corrosion resistance in many environments, comparable to Alloy 304 in most media. They exhibit improved resistance against stress corrosion cracking when aged at 550°C or higher.
Heat Resistance
Good resistance to oxidation, but long-time exposure to temperatures of 370-480°C should be avoided to prevent loss of toughness. Should not be used above age-hardening temperature to avoid reduction of hardness and mechanical properties.
Heat Treatment
Solution treatment at 1040°C for 0.5h followed by air-cooling. Age-hardening at low temperatures achieves required mechanical properties with typical shrinkage of 0.10% for condition H1150 and 0.05% for condition H900.
Welding & Machining
Can be welded using all conventional methods without pre-heating. Machining is best performed in solution-treated condition with rates similar to grade 304 steels.
Product Images
Applications
- Engine components
- High strength and boat propeller shafts
- Plastic moulding dies
- Valves and gears
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben