Introduce of 310S Stainless Steel
Grade 310 / 310S stainless steel (1.4845) is one of the most widely used grades of heat resistant stainless steel supplied into numerous industry sectors. The key properties of this material are its high chromium and medium nickel content making its resistance to oxidation, sulfidation and other forms of hot corrosion its main characteristics. Whilst retaining good strength when exposed to high temperatures, like most austenitic grades this grade will also maintain its strength and toughness at sub-zero temperatures.
Standards of 310S Stainless Steel
ASTM A240, A276, A312, A479, AMS 5521, 5651
Application of 310S Stainless Steel
Flare tips; Fluidized bed coal combustors; Radiant tubes; Tube hangers for petroleum refining and steam boilers; Coal gasifier internal components; Thermowells and refractory anchor bolts; Burners, combustion chambers; Retorts, muffles, annealing covers; Cryogenic structures
Corrosion Resistance of 310S Stainless Steel
310 / 310S stainless steel (1.4845) has excellent corrosion resistance at normal temperatures but is primarily designed to perform at high temperatures. In these high temperature environments, 310 / 310S (1.4845) maintains very good corrosion resistance and also has exceptional resistance to; oxidizing and carburizing atmospheres and other forms of hot corrosion, up to a maximum dry air service temperature of 1100ºC. Other corrosive compounds such as water and sulphur compounds will significantly reduce the maximum service temperature.
Welding of 310S Stainless Steel
Grade AISI 310S can be welded using the majority of welding processes: TIG, MIG, plasma, submerged arc, coated electrode and tubular wire. The electrodes AWS/ASME E310-15 or wires AWS/ASME ER 310 are commonly used. For the welding of the finishing pass, the use of AWS/ASME E309-15 or wires AWS/ASME ER 309 is recommended. If the fluidity of the weld pool is a problem, the use of filler metals with silicon (ER309LSi or ER309Si) are recommended.
Chemical Component of 310S Stainless Steel
Grade | Cr% | Ni% | C% | Si% | Mn% | P% | S% | Mo% | Cu% |
310S | 24.0-26.0 | 19.0-22.0 | 0-0.08 | 0-0.75 | 0-2.0 | 0-0.045 | 0-0.03 | 0-0.75 | 0.5 |
Mechanical Peoperty of 310S Stainless Steel
Mechanical & Physical Properties | 21.1 °C | 537.8 °C | 648.9 °C | 760 °C | 871.1 °C | 982 °C | 1093 °C |
Ultimate Tensile Strength/ MPa | 551.6 | 467.5 | 373 | 242 | 131.7 | - | - |
0.2% Yield Strength/ MPa | 241.3 | 143.4 | 142.7 | 133.1 | 84.1 | - | - |
Elongation % | 52 | 47 | 43 | 46 | 48 | - | - |
Minimum Creep 0.0001% per hr/ MPa | - | - | 102.7 | 22.8 | 7.6 | 1.9 | - |
10,000 hr Rupture Strength / MPa | - | - | 99.3 | 31 | 10.3 | 4.6 | - |
Coefficient of Thermal Expansion µm/m⁰C | - | 17.1 | 17.6 | 18.1 | 18.3 | 18.5 | 19.1 |
Thermal Conductivity/kcal/(hr.m.°C) | 11.3 | 20.2 | 22.6 | 25 | 27.4 | 29.8 | - |
Modulus of Elasticity/ x105 MPa | 2 | 1.59 | 1.5 | 1.41 | 1.32 | - | - |
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