2507(UNS S32750) Duplex Stainless Steel 1.4410
Chemical composition,%
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
Cu |
N |
0.03Max |
1.2Max |
0.80Max |
0.035Max |
0.02Max |
24.0-26.0 |
6.0-8.0 |
3.0-5.0 |
0.5Max |
0.24-0.32 |
General Properties
Duplex Stainless Steel 2507 is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.
The impact strength is also high. Alloy 2507 is not recommended for applications which require long exposures to temperatures above 570F because of the risk of a reduction in toughness.
Standards
ASTM/ASME .......... A240 - UNS S32750
EURONORM............ 1.4410 - X2 Cr Ni MoN 25.7.4
AFNOR.................... Z3 CN 25.06 Az
Applications
Oil and gas industry equipment
Offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection and ballast water systems
Chemical process industries, heat exchangers, vessels, and piping
Desalination plants, high pressure RO-plant and seawater piping
Mechanical and structural components, high strength, corrosion-resistant parts
Power industry FGD systems, utility and industrial scrubber systems, absorber towers, ducting, and piping