Duplex 2507 Alloy Stainless Steel Sheet
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Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of duplex 2507 alloy stainless steel sheet in China. If you're going to wholesale high quality duplex 2507 alloy stainless steel sheet made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
2507 Stainless Duplex Steel Plate is a highly alloyed, super duplex stainless steel designed for applications requiring exceptional strength and corrosion resistance, especially in severe environments. The alloy's high chromium, molybdenum, and nitrogen content give it excellent resistance to pitting, crevice corrosion, and general corrosion, making it suitable for a wide range of industries.
Hot Forming
2507 should be hot worked between 1875°F and 2250°F. This should be followed by a solution anneal at 1925°F minimum and a rapid air or water quench.
Cold Forming
Most of the common stainless steel forming methods can be used for cold working 2507. The alloy has a higher yield strength and lower ductility than the austenitic steels so fabricators may find that higher forming forces, increased radius of bending, and increased allowance for springback are necessary. Deep drawing, stretch forming, and similar processes are more difficult to perform on 2507 than on an austenitic stainless steel. When forming requires more than 10% cold deformation, a solution anneal and quench are recommended.
Table: 2507 Stainless Duplex Steel Plate Specifications
| Property | Value |
|---|---|
| Standard | ASTM A240, ASTM A480, ASME SA240 |
| Grade | 2507 (UNS S32750) |
| Thickness | 0.5mm - 100mm |
| Width | 1000mm - 2500mm |
| Length | 2000mm - 12000mm |
| Mechanical Strength | Yield Strength: ≥550 MPa, Tensile Strength: ≥800 MPa |
| Corrosion Resistance | Excellent, particularly in chloride-rich environments |
| Weldability | Good, with careful control of heat input and post-weld treatment |
| Heat Treatment | Solution annealed and quenched |
| Surface Finish | No.1, 2B, No.4, HL, BA, Mirror |
Heat Treatment
2507 should be solution annealed and quenched after either hot or cold forming. Solution annealing should be done at a minimum of 1925°F. Annealing should be followed immediately by a rapid air or water quench. To obtain maximum corrosion resistance, heat treated products should be pickled and rinsed.
Welding
2507 possesses good weldability and can be joined to itself or other materials by shielded metal arc welding (SMAW), gas tungsten arc welding (GTAW), plasma arc welding (PAW), flux cored wire (FCW), or submerged arc welding (SAW). 2507/P100 filler metal is suggested when welding 2507 because it will produce the appropriate duplex weld structure.
Preheating of 2507 is not necessary except to prevent condensation on cold metal. The interpass weld temperature should not exceed 300°F or the weld integrity can be adversely affected. The root should be shielded with argon or 90% N2/10% H2 purging gas for maximum corrosion resistance. The latter provides better corrosion resistance.
If welding is to be done on only one surface and post-weld cleaning is not possible, GTAW is suggested for root passes. GTAW or PAW should not be done without a filler metal unless post-weld cleanup is possible. A heat input of 5-38 kJ/in. should be used for SMAW or GTAW. A heat input of about 50kJ/in. can be used for SAW.
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