310S (UNS S31008) is a low-carbon version of the classic Grade 310 austenitic stainless steel. By reducing carbon content, the alloy minimizes carbide precipitation during welding, significantly enhancing its weldability and intergranular corrosion resistance. HT PIPE is a 1.4845 aisi 310s steel plate supplier with 15+ export experience. Contact us to get free quote and sample!
Superior Oxidation Resistance
Standard stainless steels like 304 or 316 begin to fail as temperatures climb toward 800°C. In contrast, 310S stainless steel plate maintains excellent oxidation resistance in continuous service up to 1150°C. This makes it indispensable for components that never get a "cool down" period.
Corrosion Resistance in Harsh Media
Beyond heat, 310S excels in moderately oxidizing and carburizing atmospheres. Recent research into Concentrated Solar Power (CSP) has highlighted 310S as a primary candidate for chloride molten salt tanks, outperforming 316L in terms of corrosion rates in high-temperature nitrate and carbonate melts.
Mechanical Stability
Unlike ferritic steels that can become brittle over time, the austenitic structure of 310S provides high creep strength. It retains its stiffness and load-bearing capacity under fire conditions better than most carbon steel alternatives.
Chemical Composition of Stainless Steel 310S
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 310S | 0.08 max | 2.0 max | 1.00 max | 0.045 max | 0.030 max | 24.00 - 26.00 | 0.75 max | 19.00 - 22.00 | 53.095 min |
Primary Industrial Applications
Thermal Processing: Furnace parts, muffle tubes, and annealing covers.
Petrochemical Industry: Flare headers, tube hangers for crude oil distillation, and steam boilers.
Energy Sector: Coal gasifier components and biomass conversion systems.
Environmental Control: Thermal oxidizers and waste incineration grates.
FAQ
Is 310S stainless steel magnetic?
In its annealed state, 310S is strictly non-magnetic. However, some very slight magnetism may be detected after heavy cold-working or laser cutting due to martensitic transformation at the edges.
What is the maximum operating temperature for 310S in a reducing atmosphere?
While it handles 1150°C in oxidizing air, in reducing (low oxygen) or high-sulfur atmospheres, the limit drops significantly (often to 650°C) due to the breakdown of the protective oxide layer.
Can 310S be used in cryogenic applications?
Yes. Despite being a "heat-resistant" grade, its austenitic structure provides excellent toughness and low magnetic permeability at sub-zero temperatures.
