High Hardness 17-4PH Stainless Steel Round Bar Hot Rolled with Bright Surface
Price:
3.44
MOQ:
50
Delivery Time:
Negotiable
Product Description
17-4PH Stainless Steel Round Bar
High-quality 17-4PH precipitation hardening stainless steel round bars offering exceptional hardness and strength for demanding industrial applications.
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 (Type 630) is a chromium-copper precipitation hardening stainless steel designed for applications requiring high strength and moderate corrosion resistance. It maintains high strength up to approximately 600°F (316°C).
General Properties
Alloy 17-4 PH is a precipitation hardening martensitic stainless steel with copper and niobium additions. This grade 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
- Offshore applications (foils, helicopter deck platforms)
- Food processing industry
- Pulp and paper industry
- Aerospace components (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
| 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 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell C (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 (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 |
| Mean Coefficient of Thermal Expansion (0-100°C) | 10.8 µm/m·°C |
| Mean Coefficient of Thermal Expansion (0-315°C) | 11.6 µm/m·°C |
Alternative Grade Comparison
| Alternative Grade | Reason for Choosing 17-4PH |
|---|---|
| 431 | 431 has higher toughness but 17-4PH offers better strength characteristics |
| 416 | 416 is free-machining but 17-4PH provides superior strength |
| 316 | 316 has higher corrosion resistance but much lower strength than 17-4PH |
| 2205 | 2205 offers better corrosion resistance with lower strength than 17-4PH |
Heat Treatment
Solution treatment (Condition A): Heated at 1040°C for 0.5 hours, then air-cooled to 30°C. Small sections can be oil quenched.
Hardening: Age-hardened at low temperatures to achieve required mechanical properties. During processing, superficial discoloration occurs with shrinkage of 0.10% for condition H1150 and 0.05% for condition H900.
| Condition | Hardening Temp (°C) | Time (h) | Typical Hardness (HRC) | Tensile Strength (MPa) |
|---|---|---|---|---|
| A | Ann | - | 36 | 1100 |
| H900 | 482 | 1 | 44 | - |
| H925 | 496 | 4 | 42 | 1170-1320 |
| H1025 | 552 | 4 | 38 | 1070-1220 |
| H1075 | 580 | 4 | 36 | 1000-1150 |
| H1100 | 593 | 4 | 35 | 970-1120 |
| H1150 | 621 | 4 | 33 | 930-1080 |
Fabrication Properties
Welding: Grade 630 stainless steels can be welded using all conventional methods without pre-heating. Care should be taken in designing and welding high-strength steels to prevent weldment stresses.
Machining: Can be machined in solution-treated condition with machining rates similar to grade 304 stainless steels.
Product Applications
- Engine components
- High-strength boat propeller shafts
- Plastic molding dies
- Valves and gears
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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