410S - UNS S41008:
AISI Type 410S is a non-hardenable, low carbon modification of Type 410, providing moderate strength with moderate corrosion resistance. The low carbon content and a small titanium addition minimizes austenite formation at high temperatures, thereby restricting the alloy's ability to harden. The result is a soft, ductile condition when the material is rapidly cooled from above the critical temperature. The alloy is completely ferritic. Thermal conductivity is improved and thermal expansion reduced relative to austentic stainless grades.
Similar performing non-hardenable grades include UNS S41003 (Duracorr®*) and UNS S40920 (AISI Type 409).
- Melting Point: 2700 – 2790°F (1482 – 1532°C)
- Density: 0.280 lbs/in3 / 7.76 g/cm3
- Modulus of Elasticity in Tension: 29 X 106 psi / 200 GPa
- Tensile Strength Minimum (psi): 64,000
- Yield Strength Minimum 0.2% offset (psi): 42,000
- % Elongation in 2” Minimum: 33%
- Hardness: Rockwell B75
- Carbon: 0.08 max
- Manganese: 1.00
- Phosphorus: 0.040
- Sulfur: 0.030
- Silicon: 1.00
- Chromium: 11.50-14.50
- Titanium: 0.20
- Iron: Balance
All values are maximum values unless otherwise specified. Values derived from applicable AMS and ASTM specifications.
- Heat slowly to 1600 -1650°F (871 - 899°C), air cool to relieve cold work strains. Care should be exercised to avoid exposure at temperatures of 2000°F (1093°C) or above because of possible grain growth 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..
The corrosion resistance of 410S Stainless Steel is similar to Type 410. It provides adequate resistance to atmospheric corrosion, fresh water, mild acids and alkalies, and some other chemicals.
*Duracorr® is a registered trademark of Arcelor Mittal Steel