Hot Rolled Bright Surface 17-4PH Stainless Steel Round Bar UNS S17400 with OD 6-300mm
Price:
3.42
MOQ:
50
Delivery Time:
Negotiable
Product Description
UNS S17400 Precipitation Hardening Stainless Steel Bar
17-4PH Stainless Steel Round Bar is a chromium-nickel-copper precipitation hardening martensitic stainless steel offering high strength and moderate corrosion resistance up to 600°F (316°C).
Product Specifications
| 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 |
| Service | Cutting, surface polishing, heat treatment |
| Brand | Walsin BAOSTEEL TISCO QINGSHAN |
Material Description
17-4 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).
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 | Standards |
|---|---|
|
|
Chemical Composition
| Element | Content (%) |
|---|---|
| C | max 0.07 |
| Mn | max 1 |
| Si | max 1 |
| P | max 0.04 |
| S | max 0.030 |
| Cr | 15 - 17.5 |
| Ni | 3 - 5 |
| Cu | 3 - 5 |
| Nb+Ta | 0.15 - 0.45 |
Mechanical Properties
| Condition | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell 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 |
Physical Properties
| Property | Value |
|---|---|
| Density | 7750 kg/m³ |
| Thermal Conductivity at 100°C | 18.4 W/m.K |
| Thermal Conductivity at 500°C | 22.7 W/m.K |
| Specific Heat 0-100°C | 460 J/kg.K |
| Electrical Resistivity | 800 nΩ.m |
Alternative Grades Comparison
| Alternative Grade | Reasons for Choosing 17-4PH (630) |
|---|---|
| 431 | 431 has higher toughness than 17-4PH. Better availability in some sizes. |
| 416 | Free-machining martensitic stainless steel - better for repetition machining. Lower cost. |
| 316 | Higher corrosion resistance of 316 to resist more severe environments, but with much lower strength than 17-4PH. |
| 2205 | Much better corrosion resistance than 17-4PH, with a lower strength (but not as low as 316). |
Heat Treatment
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.
| Condition | Hardening Temp (°C) | Time (h) | Typical Hardness Rockwell C | Tensile Strength (MPa) |
|---|---|---|---|---|
| A | Ann | - | 36 | 1100 |
| H900 | 482 | 1 | 44 | - |
| H925 | 496 | 4 | 42 | 1170-1320 |
| H1025 | 552 | 4 | 38 | 1070-1220 |
Processing Characteristics
Welding: Grade 630 stainless steels can be welded using all conventional methods without pre-heating.
Machining: Grade 630 stainless steels can be machined in their solution-treated condition with machining rates similar to grade 304 steels.
Product Images
Applications
- Engine components
- High strength and boat propeller shafts
- Plastic moulding dies
- Valves and gears
Contact Information
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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