410S Stainless Steel

Description:

410S Stainless Steel is a non-hardening modification of Type 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. This low hardening characteristic helps to prevent cracking when the steel is welded or exposed to high temperatures. The alloy is ferritic in the annealed condition and ferromagnetic.

Product Forms:

Sheet, Strip

Specifications:

ASTM A240

Typical Applications:

Because 410S cools from elevated temperatures without hardening, it is particularly useful for annealing boxes, quenching racks, oxidation resistant partitions and other high-temperature units. It also is used in the petrochemical industry for tower packing and distillation trays.

Chemical Composition:

Element Type 410S
Carbon 0.08 max.
Manganese 1.00 max.
Sulfur 0.030 max.
Phosphorus 0.040 max.
Silicon 1.00 max.
Chromium 11.5 – 13.5
Nickel 0.60 max.

Mechanical Properties: ASTM A240

TypeYield Strength 0.2% offset (KSI)Tensile Strength (KSI)% Elongation (2" Gauge length)Hardness Rockwell
410S 30 min. 60 min. 22 min. HRB 89

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 15.6
Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) 32 to 212oF 6.0
32 to 600oF 6.4
32 to 1,000oF 6.7
32 to 1,200oF 7.5
Electrical Resistivity (micro ohms - cm) at 70oF 23.7
Melting Point Range (oF) 2700-2790
Oxidation Resistance - Continuous Service(oF) 1300

Processing:

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.

Forming:

410S Stainless Steel can be easily formed by drawing, spinning, bending and roll forming.

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.

Corrosion:

Type 410S provides adequate resistance to atmospheric corrosion, fresh water, mild acids and alkalies, and some other chemicals.