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Introduction
F53(UNS S32750), also known as SAF 2507 duplex stainless steel, consists of austenite and ferrite phases. S32750 has extremely strong resistance to chloride ion media, chloride weak corrosion and chloride weak corrosion, and is suitable for marine and acidic environments. F53 has higher yield strength and tensile strength than conventional austenitic stainless steel and is suitable for projects with high strength requirements.S32750 can still maintain high strength and ductility at low temperatures, and has good impact toughness. F53 stainless steel is easy to process, shape, weld and manufacture, and has good plasticity and weldability.
Chemical components(%)
Composition | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N | Ti |
Min | \ | \ | \ | \ | \ | 24.00 | 6.00 | 3.00 | \ | 0.24 | \ |
Max | 0.03 | 0.80 | 1.20 | 0.035 | 0.015 | 26.00 | 8.00 | 5.00 | 0.50 | 0.32 | 0.05 |
Mechanical properties
Rigidity | Tensile strength | Yield strength | Elongation |
≤310HBW | ≥750MPa | ≥550MPa | ≥25% |
Physical properties
Density | Melting points | Specific heat | Magnetism | Thermal conductivity | Linear expansivity |
7.8kg/dm3 | 1300-1390℃ | 0.46J/(kg.℃） | yes | 14.0W/(m.k)(100℃) | 12.0×10-6/K(0-100℃) |
UNS S32750 Production Standard
Round bars/Wires | ASTM A276 |
Sheet/Plate | ASTM A240 |
Seamless and Welded Tubes/Pipes | ASTM A789(for general service) ASTM A790(for general corrosive service) |
Flanges/Fittings/Valves/Parts | ASTM A182 |
Applications
(1)Oil and gas industry:F53 is widely used in pipeline systems of offshore oil and gas platforms, oil and gas pipelines, subsea equipment and offshore engineering.
(2)Chemical industry:F53 is widely used in chemical processing units, storage tanks, reactors and other equipment.
(3)Slurry treatment:it has excellent corrosion resistance in slurry treatment and sewage treatment equipment.
(4)Food Processing:F53 is used in food processing and seawater treatment equipment.
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