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Hot Rolled Bright Surface 17-4PH Stainless Steel Bar OD 6-300mm for High Strength Applications
Product Details
| Model NO. | 630 | Shape | Round |
|---|---|---|---|
| Technique | Hot Rolled | Surface Treatment | Bright |
| Specification | OD 6-300mm | Production Capacity | 50000kgs |
| Tensile Strength | 1105-1310 MPa | Yield Strength | 1000-1170 MPa |
| Elongation | 10-16% | Hardness | 28-44 HRC |
| Density | 7750 Kg/m³ | Thermal Conductivity | 18.4-22.7 W/m.K |
| Specific Heat | 460 J/kg.K | Electrical Resistivity | 800 NΩ.m |
| Max Temperature | 572°F (300°C) | ||
| Highlight | Hot Rolled Stainless Steel Bar,Bright Surface 17-4PH Stainless Steel,OD 6-300mm 630 Stainless Steel |
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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 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
- Offshore (foils, helicopter deck platforms)
- Food industry equipment
- Pulp and paper industry
- Aerospace (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
Corrosion Resistance
Alloy 17-4 PH withstands corrosive attacks better than standard hardenable stainless steels and is comparable to Alloy 304 in most media. For stress corrosion cracking risks, higher aging temperatures above 1022°F (550°C) are recommended. The alloy provides corrosion resistance in chemical, petroleum, paper, dairy, and food processing industries.
Material Introduction
Grade 630 stainless steels are martensitic stainless steels precipitation hardened to achieve excellent mechanical properties. These steels achieve high strength and hardness following heat treatment while maintaining heat and corrosion resistance similar to grade 304 steels. Available in solution treated conditions for easy machining with age-hardening to attain high strength.
Chemical Composition
Table 1: Composition ranges for grade 630 stainless steels
| Grade | C | Mn | Si | P | S | Cr | Ni | Cu | Nb+Ta |
|---|---|---|---|---|---|---|---|---|---|
| 630 | 0.07 max | 1.0 max | 1.0 max | 0.04 max | 0.030 max | 15-17.5 | 3-5 | 3-5 | 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 (HR C) | 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
| Density (kg/m³) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Elec Resistivity (nΩ.m) |
|---|---|---|---|---|
| 7750 | 10.8 (0-100°C) 11.6 (0-315°C) |
18.4 (at 100°C) 22.7 (at 500°C) |
460 | 800 |
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. During the process, superficial discoloration occurs followed by shrinkage.
Hardening: Grade 630 stainless steels are age-hardened at low temperatures to achieve required mechanical properties. During the process, superficial discoloration occurs followed by shrinkage.
Table 6: Typical mechanical properties of grade 630 steels achieved 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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