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UNS S32760 1.4501 X2CrNiMoCuWN 25-7-4 SAF32760 25Cr
Mechanical Properties:

0.2% Proof Stress

550 N/mm2

Tensile Strength

750 N/mm2

Elongation, 5.65√S0


Reduction of area


Hardness (Brinell)

270 max.

Impact Strength (Room Temp)


Impact Strength (-46oC)

60J av (45J min)

Notes: 1. Testing shall be carried out in accordance with ASTM A370 or EN ISO 6892-1 (tensile), EN ISO 6506-1(hardness) 
2. Minimum properties quoted (tested at room temperature in a longitudinal direction) 
3. Testing performed on each melt of material per heat treatment batch 
4. Hardness shall be in accordance with NACE MR 1075 with a maximum HRC of 2 
5. ASTM G48A corrosion test (at 50°C) no pitting and < 3.0 g/m2 weight loss (ASTM specification < 4.0 g/m2) 
6. Ferrite content 35-55% 
7. Microstructure certified free from grain boundary carbides, sigma, chi and laves phases 

Physical Properties:

Density (Kg/m3)


Magnetic Permeability (20°C)


Young’s Modulus (kN/mm2)


Specific Electrical Resistance, 20°C (µΩ.m)


Mean coefficient of thermal expansion, 20-300°C (m/m/oC)

11.1 x 10-6

Specific Heat, 20°C (J/kg.K)


Thermal conductivity, 20°C (W/m.K)


Fracture Toughness, kQ (MPa/m2)


Key Features:  Excellent corrosion resistance in a wide variety of corrosive chemicals 
Pitting Resistance Equivalent number (PREN) of >40 
Outstanding resistance to pitting and crevice corrosion in seawater and other chloride containingenvironments 
Critical Pitting Temperature exceeding 50°C 
High strength compared to austenitic and 22%Cr duplex stainless steels 
Excellent ductility and impact strength at both ambient and sub-zero temperatures 
High resistance to abrasion, erosion and cavitation erosion 
Excellent resistance to stress corrosion cracking in chloride containing environments 
Listed in NACE MR 0175 for sour service 
ASME Approval for Pressure Vessel application 

Applications:  Process industry components in nitric acid, dioxide, polypropylene & PVC production, caustic evaporators 
Equipment handling organic & fatty acids 
Marine industry and shipbuilding propellers, shafts, rudders, shaft seals, pumps, bolts, fasteners, valves,instrumentation 
Oil and chemical tankers 
Oil & Gas industry pumps, valves, pipe, vessels, wellhead equipment, subsea equipment 
Pollution control systems, fans and pumps, wet scrubbers, incinerators, flue gas desulphurization (FGD) 
Pulp & paper industry components such as black liquor heater tubes, digester blow valves, rotary feed valves,, brownstock washers, precipitators, bleaching components 
Food Industry applications including sugar cane centrifuges, corn and vegetable processing plant 
Agrochemicals production such as fertilizers (based on wet phosphoric acid) 
Sewage treatment, seawater cooling, desalination plants