SAF2507 (UNS S32750)
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SAF2507 Duplex Stainless Steel
Introduction & Properties
UNS S32750
Duplex stainless steel SAF2507 (UNS S32750) is a kind of stainless one with the amount of 25% chromium, 4% molybdenum, and 7% nickel. It is especially designed for parts with the requirement of exceptional strength and corrosion resistance, and the steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity as well as low coefficient of thermal expansion. And the high amount of chromium, molybdenum, and nitrogen can entitle the SAF2507 (UNS S32750) excellent resistance to pitting, crevice, and general corrosion.
And 2507 also provides excellent resistance to inorganic acids, especially under the surroundings with chlorides.
Chemical composition of SAF2507 (UNS S32750) (%)
grades C Cr Ni Mo N Others
SAF2507 0.02 25 7 4.0 0.27 S = 0.001
Heat treatment of SAF2507 (UNS S32750)
The solution annealing and quenching should be carried out for SAF 2507 after hot forming or cold forming. Temperature of solution annealing should be above 1925 ° F, followed immediately by quenching with air or water. In order to get good corrosion resistance,the product should go through pickling and rinsing after heat treatment.
Application
Though SAF2507 (UNS S32750) is used widely, it should not be used above above 570°F for a long time due to the reduction on toughness.Typical applications are shown below:
• heat exchangers and pipe
• oil and gas industry equipment
• chemical process industries, heat exchangers, vessels, and piping
• offshore platforms, heat exchangers, process and service water systems
• desalination plants, high pressure RO-plant and seawater piping
• mechanical and structural components with the requirements of high strength and corrosion resistance
• industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping.
Please contact our company service (hotline:86 0510-83,632,628) to get more information on SAF2507 (UNS S32750) about selection, application, heat treatment and inventory and other related information,you can also contact us for more information about duplex stainless steel and stainless steel.
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