Precipitation Hardening 17-4PH Stainless Steel Round Bar - High Strength & Corrosion Resistant SUS 630
Price:
1.85
MOQ:
50
Delivery Time:
Negotiable
Product Description
SUS 630 Precipitation Hardening Stainless Steel - JIS G4303 Round 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. This 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 performs comparably to Alloy 304 in most media. For stress corrosion cracking prevention, higher aging temperatures above 1022°F (550°C) are recommended, with 1094°F (590°C) being optimal for H2S media applications.
Technical Specifications
Chemical Composition
Table 1: Composition ranges for grade 630 stainless steels
| Element | Min (%) | Max (%) |
|---|---|---|
| C | - | 0.07 |
| Mn | - | 1.00 |
| Si | - | 1.00 |
| P | - | 0.04 |
| S | - | 0.030 |
| 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) | 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
Table 3: Typical physical properties of grade 630 stainless steels
| Property | Value |
|---|---|
| Density (kg/m³) | 7750 |
| Specific Heat 0-100°C (J/kg.K) | 460 |
| Thermal Conductivity at 100°C (W/m.K) | 18.4 |
| Thermal Conductivity at 500°C (W/m.K) | 22.7 |
| Electrical Resistivity (nΩ.m) | 800 |
| Mean Coeff of Thermal Expansion 0-100°C (µm/m/°C) | 10.8 |
| Mean Coeff of Thermal Expansion 0-315°C (µm/m/°C) | 11.6 |
Heat Treatment Specifications
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 and boat propeller shafts
- Plastic moulding 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