410 Stainless Steel

Description:

Type 410 Stainless Steel is a martensitic stainless steel that provides good corrosion resistance plus high strength and hardness. It is magnetic in both the annealed and hardened conditions. A wide range of properties can be developed with different heat treatments.

Product Forms:

Sheet, Strip Specifications: ASTM A240

Typical Applications:

Flat springs, knives, kitchen utensils and hand tools

Chemical Composition:

ElementType 410
Carbon 0.08 – 0.15
Manganese 1.00 max.
Sulfur 0.030 max.
Phosphorus 0.040 max.
Silicon 1.00 max.
Chromium 11.5 – 13.5
Nickel 0.75 max.

Mechanical Properties:

TypeYield Strength 0.2% offset (KSI)Tensile Strength (KSI)% Elongation (2" Gauge length)Hardness Rockwell
410 Ann 30 min. 65 min. 20 min. HRB 96

Physical Properties:

Density (lb./ in^2) @ RT   0.28
Modulus of Elasticity in Tension (psi x 10^6)   29.0
Specific Heat (BTU/o F/lb.) 32 to 212 oF 0.11
Thermal Conductivity (BTU/hr/ft^2/ft) 212oF 14.4
  932oF 16.6
Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) 32 to 212oF 5.5
  32 to 1,200oF 6.5
Electrical Resistivity (micro ohms - cm) at 70oF 22.5

Processing:

Annealing: Heat slowly to 1500 -1650°F, cool to 1100°F in furnace, air cool. Process Annealing: Heat to 1350 -1450°F, air cool. Hardening: Heat to 1700 - 1850°F, air cool or oil quench. Follow by stress-relief or temper. Stress Relieving: Heat at 300 - 800°F for 1 to 2 hours, air cool.

Tempering:

Heat to 1100 - 1400°F for 1 to 4 hours, air cool.

Forming:

Type 410 has reasonably good cold working properties and can be moderately drawn and formed in the annealed condition.

Welding:

The martensitic alloys have limited weldability due to their hardenability. Corrosion: Type 410 provides good corrosion resistance to air, water and some chemicals. It shows satisfactory resistance to nitric acid, concentrated sulfuric acid, dilute acetic acid and naphtha. Resistance to food acids is good.