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 |
| 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 |
| 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 |
- Offshore (foils, helicopter deck platforms)
- Food industry
- Pulp and paper industry
- Aerospace (turbine blades)
- Mechanical components
- Nuclear waste casks
|
- 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 max |
| Mn |
1.0 max |
| Si |
1.0 max |
| P |
0.04 max |
| S |
0.030 max |
| Cr |
15.0 - 17.5 |
| Ni |
3.0 - 5.0 |
| Cu |
3.0 - 5.0 |
| 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 |
Alternative Grade Comparison
| Alternative Grade |
Reason for Choosing 17-4PH |
| 431 |
431 has higher toughness than 17-4PH |
| 416 |
Free-machining martensitic stainless steel - better for repetition machining |
| 316 |
Higher corrosion resistance but with much lower strength |
| 2205 |
Much better corrosion resistance with lower strength |
Heat Treatment
| 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 |
Product Applications
- Engine components
- High strength and boat propeller shafts
- Plastic moulding dies
- Valves and gears
Product Images
