2507 Duplex Stainless Steel (UNS S32750)
Synopsis
UNS S32750 or 2507 Duplex is a super austenitic premium stainless that is similar to 2205 Duplex. 2507 Stainless Steel is composed of 25% Chrome and 7% nickel which causes the alloy to have an even higher corrosion resistance and longer life span. Along with it being corrosion resistant, UNS S32750 has a high resistance of cracking and pitting, and the yield and tensile strength make it comparable to nickel alloys.
Resistance
Large chromium levels as well as molybdenum content of 2507 Duplex makes this material very resistant to corrosive acidic elements. It implements great resistance to chloride SCC and is preferable to 2205 Duplex in both strength and corrosive resistance.
Processing
2507 Duplex material will be heat treated at climates ~2000°F. After heated, the substance will be pursued by a annealed solution at ~1900°F then submergence in water. 2507 is easily cold worked and has a greater strength/lower ductility than austenitic stainless grades.
Physical Properties:
Condition |
Tensile | Yield | Enlongation | Reduction of Area |
Hardness |
| Annealed | 110 | 80 | 25 | – | 32 HRC Max |
Applications
- Valves
- Pump and Boat Shafts
- Heat Exchangers
- Water Desalinization
- Power Generation
- Chemical
- Pulp and Paper
- Oil and Gas
Benefits
- Very high corrosion resistance
- Superior resistance to pitting and cracking in harsh environments
- Good weldability and workability
- High yield and tensile strength
