2507(UNS S32750 )

Application case:

Characteristic:

1. Brief description and main use of raw materials

1.1 Brief description of raw materials: 2507 is a kind of metallographic structure - martensitic (two-phase) stainless steel plate, which combines the most advantageous characteristics of many ferritic and austenitic steels. Because the content of chromium and molybdenum in the steel is very high, it has excellent resistance to spot corrosion, ductile fracture and uniform corrosion. The dual microstructure ensures that the steel has high resistance to intergranular corrosion cracking, and the impact toughness is also very high

1.2 Main purpose: 2507 stainless steel plate is used for coal, oil and natural gas industry production; The service platform of water and rock breaking oil (heat exchanger pipe, sewage treatment and water supply equipment, fire-fighting facilities, sprinkler system software, stabilized air conditioning water system, chemical machinery and equipment, desalting (elimination) machinery and equipment (and air conditioning pipe and sea surface pipe in the equipment); Not only high toughness but also high corrosion resistance machine and structural parts are required; Fuel (waste) gas and oil fume purifier

1.3 Available specifications:ASTM/ASME:A240 - UNS S32750 

2. Composition

4. Corrosion resistance

4.1 The relatively high chromium and molybdenum content of SAF 2507 makes it have strong overall corrosion resistance to organic substances such as benzoic acid and formic acid. SAF 2507 aluminum alloy also has strong corrosion resistance to strong oxidants, especially those including fluoride

4.2 Compared with 904L, SAF2507 has a stronger corrosion resistance to hydrochloric acid with chloride ion in the diluent. 904L is an aluminum alloy in martensitic state, which is specially used for corrosion resistance of pure sulfuric acid

4.3 316L grade cannot be used in sulfuric acid environment, if it is subject to local corrosion or overall corrosion. SAF2507 can be used as diluent in sulfuric acid environment, and has strong resistance to spot damage and crack corrosion

4.4 The relatively low carbon content of nSAF 2507 greatly reduces the risk of cementation volume accumulation in the intercrystalline during quenching and tempering treatment. Therefore, this aluminum alloy has strong resistance to stress corrosion related to cementite

4.5 The compound structure of SAF 2507 has strong resistance to stress corrosion cracking. Because of its relatively high aluminum alloy composition, the corrosion resistance and compressive strength of SAF 2507 are better than 2205

5、Size category:

Diameter: OD 6 ～ 168mm Thickness: WT 1.0 ～ 12.7 mm