DUPLEX 2507 Stainless Steel Pipe

Duplex 2507 (UNS S32750) 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 nickel levels provide excellent resistance to pitting, crevice, and general corrosion.

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

Standards
ASTM/ASME ………. A240 – UNS S32750
EURONORM………… 1.4410 – X2 Cr Ni MoN 25.7.4
AFNOR……………….. Z3 CN 25.06 Az

Chemical Properties

Typical values (Weight %)

C	Cr	Ni	Mo	N	Others
0.020	25	7	4.0	0.27	S=0.001
C	Cr	Ni	Mo	N	Others

Mechanical Properties

Ultimate Tensile Strength, ksi	116 min.
0.2% Offset Yield Strength 0.2%, ksi	80 min.
0.1% Offset Yield Strength 0.2%, ksi	91 min.
Elongation in 2 inches, %	15 min.
Hardness Rockwell C	32 max.
Impact Energy, ft.-lbs.	74 min.

Physical Properties

Density	lb/in^3	0.28
Modulus of Elasticity	psi x 10^6	29
Coefficient of Thermal Expansion 68-212°F/°F	x10^-6/°F	7.2
Thermal Conductivity	Btu/h ft °F	8.7
Heat Capacity	Btu/lb/°F	0.12
Electrical Resistivity	W-in x 10^-6	31.5

Product Pictures

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