17-4 PH Stainless Steel Features
- High hardness
- Good formability, and weldability
- High wear resistance
- Excellent thermal conductivity
- High-temperature stability
- Non-magnetic properties
- Excellent cryogenic properties
- Excellent low-temperature toughness
- High resistance to stress corrosion cracking
- Good oxidation resistance
- Environmentally friendly and recyclable
Reputable 17-4 PH Stainless Steel Supplier - Tuolian
17-4 PH stainless steel also known as AISI 630. It is a precipitation-hardening martensitic stainless steel that offers high strength, excellent corrosion resistance, & good toughness. This steel is characterized by its ability to undergo a transformation from austenite to martensite during cooling or deformation. That results in improved mechanical properties.
Tuolian 17-4 PH stainless steel consists of carbon, manganese, phosphorus, and other elements. The specific amounts of these elements are carefully controlled to achieve the desired properties of the steel.
At Tuolian, we manufacture 17-4 stainless steel in sheet, plate, bar, wire, pipe, tube, forging, and casting. These forms can be further customized to specific sizes, thicknesses, & surface treatments based on customer requirements.
Wide Applications
- Marine components
- Heat exchangers
- Nuclear components
- Structural parts
- Automotive component
- Oil and gas component
- Nuclear fuel cladding
- Aerospace fasteners
- Nuclear power generation parts
- Valves, Springs, Fasteners
- Pump shafts, Machinery
- Aerospace components
- Food processing equipment
- Chemical processing equipment
- Nuclear containment vessels
Physical Properties
| Property | Value |
| Density | 7.75 g/cm³ |
| Melting Range | 1398-1454°C |
| Magnetic Permeability | < 1.02 |
| Elastic Modulus | 190-210 GPa |
| Thermal Expansion | 10.8 µm/m°C |
| Specific Heat Capacity | 460 J/kg°C |
| Electrical Resistivity | 0.78 µΩm |
| Hardness | HRC 35-45 |
| Tensile Strength (Ultimate) | 1100-1310 MPa |
| Yield Strength (0.2% offset) | 1000-1210 MPa |
| Elongation at Break | 5-15% |
Chemical Composition
| Element | Composition |
| Carbon | 0.07% max |
| Manganese | 1.00% max |
| Phosphorus | 0.04% max |
| Sulfur | 0.03% max |
| Silicon | 1.00% max |
| Chromium | 15.00-17.50% |
| Nickel | 3.00-5.00% |
| Copper | 3.00-5.00% |
| Molybdenum | 0.15-0.45% |
| Nitrogen | 0.10% max |
| Iron | Balance |
Equivalent Grades
| Standard | Grade |
| ASTM A564 | XM-12, 630, S17400 |
| AMS 5604 | 17-4PH |
| DIN 1.4542 | X5CrNiCuNb16-4 |
| JIS SUS630 | – |
| UNS S17400 | – |
| ISO 6931-2 | Type 17-4PH |
| EN 10088-3 | 1.4542 |
| GB/T 1220 | 05Cr17Ni4Cu4Nb |
