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Introduction
S31254 is austenitic stainless steel.Other trade name is 254SMO/1.4547/F55, it is hard to machine because S31254 material have extremely high work hardening rate and lack of sulfur content; however ,It can be used in sharp tools, overpowered machine tools, positive feeds, good amount of lubrication, and slow speeds tend to provide good machining results.if need to Annealing, the temperature should be 1149-1204°C (2100-2200°F)
Chemical components (%)
Composition | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
Min | \ | \ | \ | \ | \ | 19.5 | 17.5 | 6.00 | 0.50 | 0.18 |
Max | 0.02 | 0.8 | 1.00 | 0.03 | 0.01 | 20.5 | 18.5 | 6.50 | 1.00 | 0.22 |
Mechanical properties
Rigidity | Tensile strength | Yield strength | Elongation |
182-223HB | ≥650MPa | ≥300MPa | ≥40% |
Physical properties
Density | Melting points | Specific heat | Magnetism | Resistivity | Thermal conductivity | Linear expansivity |
8.0g/cm3 | 1320-1390℃ | 0.5J/(Kg.℃） | \ | 0.85Ω·mm²/m(20℃) | 13.5W/(m.k)(100℃) | 16.5×10-6/K(0-100℃) |
Available standard and products.
ASTM A182 For Forged or Rolled Alloy and Stainless Steel Pipe Flanges,Forged Fittings, and Valves and Parts for High-Temperature Service
ASTM A240 for Chromium and Chromium-Nickel Stainless Sheet, and Strip for Pressure Vessels
ASTM A213 for seamless boiler, superheater, and heat-exchanger tubes
ASTM 276 for stainless steel bar and shapes
Advantages
(1) Corrosion resistance: S31254 contains high levels of chromium, nickel and molybdenum. The content of these elements is the key to its corrosion resistance, strength and toughness. Especially in chloride ion environments, S31254 exhibits excellent corrosion resistance and can effectively resist pitting and crevice corrosion.
(2) High strength: The tensile strength and yield strength of S31254 are higher than those of common stainless steel materials, and it has good tensile properties.
(3) Good weldability: S31254 is suitable for various welding processes and can maintain the good performance of the weld.
(4) Good processability: S31254 can be processed by cold processing, hot processing and other processing methods, and is suitable for various complex processing requirements.
Applications
(1) Ocean: marine structures in marine environments, seawater desalination, seawater aquaculture, seawater heat exchange, etc.
(2) Environmental protection: flue gas desulfurization equipment for thermal power generation, wastewater treatment, etc.
(3) Energy: nuclear power generation, comprehensive utilization of coal, tidal power generation, etc.
(4) Petrochemical industry: oil refining, chemical industry equipment, etc.
(5) Food: salt production, soy sauce brewing, etc.
(6) High concentration chloride ion environment: paper industry, various bleaching devices
MONO Group is one of Austenitic stainless steel, Duplex stainless steel and Precipitation-hardened stainless steel etc manufacturer&Supplier&Wholesaler from China,We can supply ASTM /DIN/ISO/GB stndard high quality alloy plate,sheet,round bar,tube.pipes,fittings,flange,pls contact us freely for your RFQ to info@monokj.com
