S32750, X2CrNiMoN25.7.4, W.Nr.14410 super duplex stainless steel

2507 (S32750, F53, 1.4410) Super Duplex Stainless Steel Overview:

2507 (S32750, F53, 1.4410) super duplex stainless steel is composed of 25% chromium, 4% molybdenum and 7% nickel. 2507 duplex steel has strong strength and corrosion resistance, and is mainly used in chemical processing, petrochemical and subsea equipment. 2507 duplex steel has strong resistance to chloride corrosion, higher thermal conductivity and lower thermal expansion coefficient. Higher chromium, molybdenum and nitrogen content it has a high resistance to pitting, crevice corrosion and general corrosion.

The impact strength of 2507 dual-phase steel is also very high. It is not suitable for use at temperatures higher than 570 ° C. If it is exposed to such an environment for a long time, its toughness will decrease. 2507 duplex steel also combines many of the most beneficial properties of ferritic and austenitic steels. Due to the high chromium and molybdenum content of this steel, it has excellent resistance to pitting, crevice corrosion and uniform corrosion. The dual-phase microstructure ensures that the steel has a high resistance to stress corrosion cracking and high mechanical strength.

 

Chemical composition of 2507 (S32750, F53, 1.4410) super duplex stainless steel:

C≤	Si≤	Mn≤	P≤	S≤	Cr	Ni	Mo	N	Cu≤
0.03	0.80	1.20	0.035	0.020	24.0 26.0	6.00 8.00	3.00 5.00	0.24 0.32	0.50

 

Mechanical properties of 2507 (S32750, F53, 1.4410) super duplex stainless steel:

Heat treatment system ℃	σb(Mpa) ≥	σs(Mpa)≥	δ%≥	Brinell	Rockwell
1025~1125	800	550	15	310	32

 

2507 (S32750, F53, 1.4410) Super Duplex Stainless Steel Applications:

2507 Super Duplex Stainless Steel is used in the oil and gas industry; offshore stone oil platforms (heat exchanger tubes, water treatment and water supply systems, fire protection systems, water spray systems, water stabilization systems; petrochemical equipment; desalination (desalination) equipment And high-pressure pipes and seawater pipes in equipment); machinery and structural components that require both high strength and high corrosion resistance; combustion (waste) gas purification equipment.