Precipitation Hardening High Strength Corrosion Resistant 17-4PH SUS630 Stainless Steel Round Bar
Price:
2.58
MOQ:
50
Delivery Time:
Negotiable
Product Description
SUS630 Aqvaloy 17 Propeller Shaft Condition Raw Coupling and Propeller Side Machining Stainless Steel Bar
17-4PH Stainless Steel Overview
17-4 Precipitation Hardening (Type 630) is a chromium-copper precipitation hardening stainless steel designed for applications requiring high strength and moderate corrosion resistance. This alloy 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. The grade combines high strength, hardness (up to 572°F / 300°C), and excellent 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 |
|---|---|
|
|
Corrosion Resistance
Alloy 17-4 PH provides superior corrosion resistance compared to standard hardenable stainless steels and is comparable to Alloy 304 in most media. For chloride media, 550°C is the optimum tempering temperature, while 590°C is preferred for H2S media. The alloy may experience crevice or pitting attack in stagnant seawater but offers excellent resistance in chemical, petroleum, paper, dairy, and food processing applications.
Technical Specifications
Chemical Composition
Table 1: Composition ranges for grade 630 stainless steels
| 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
Table 2: Mechanical properties of grade 630 stainless steels
| 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
Table 3: Typical physical properties of grade 630 stainless steels
| Property | Value |
|---|---|
| Density (kg/m³) | 7750 |
| Thermal Conductivity at 100°C (W/m·K) | 18.4 |
| Thermal Conductivity at 500°C (W/m·K) | 22.7 |
| Specific Heat 0-100°C (J/kg·K) | 460 |
| Electrical Resistivity (nΩ·m) | 800 |
Heat Treatment
Table 6: Typical mechanical properties after solution treating
| 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 |
| H1075 | 580 | 4 | 36 | 1000-1150 |
| H1100 | 593 | 4 | 35 | 970-1120 |
| H1150 | 621 | 4 | 33 | 930-1080 |
Applications
- Engine components
- High strength boat propeller shafts
- Plastic moulding dies
- Valves and gears
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Get in Touch
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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