410S Stainless Steel

410S Stainless Steel is a non-hardening modification of 410. Control of the chemistry balance (low carbon and optional additions of Ti or Nb) minimizes austenite formation at high temperatures, restricting the alloy’s ability to harden. The material remains soft and ductile even when the material is rapidly cooled from above the critical temperature. 

 410S Stainless Steel Composition
%
Carbon       0.08 max.
Manganese   1.00 max.
Phosphorus     0.040 max.
Sulfur               0.030 max.
Silicon           1.00 max.
Chromium    11.5 - 14.50
Titanium      0.20 max.

 410S Stainless Steel heat Treatment
 410S is not hardenable by heat treatment. It is annealed in the 1600 - 1650°F (871 - 899°C) range and then air cooled, mainly to relieve cold working strains.
Care should be exercised to avoid exposure at temperatures of 2000°F (1093°C) or above because of possible embrittling effects. If excessively large grains are found after annealing mildly cold-worked material, the annealing temperature should be decreased to the 1200 - 1350°F (649 - 732°C) range.

 410S Stainless Steel  welding:
410S is generally considered to be weldable by the common fusion and resistance techniques. Special consideration is required to avoid brittle weld fracture. When a weld filler is required, AWS E/ER 309L or 430 filler material is most often specified.
410S stainless steel corrosion:
410S provides adequate resistance to atmospheric corrosion, fresh water, mild acids and alkalies, and some other chemicals.