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Type 410 and 410S Stainless Steels
Description
Types 410 (UNS S 41000) and 410S (UNS S 410008) are general purpose heat and corrosion resisting stainless steels. They can be hardened by thermal treatment to a wide range of mechanical properties. Type 410S is generally used when weldability is more important than hardenability. these types can be annealed for soft cold drawing and forming. type 410 is magnetic in all conditions.

Product Forms
Ingots, Slabs, Hot bands, Sheet, Strip

Typical Applications

  • Bushings
  • Caps, trays, etc. in oil fractioning towers
  • Fasteners
  • Gauge parts
  • Hardware
  • Cutlery
  • Low temperature furnace parts
  • Micrometer parts
  • Nuts
  • Oil burner parts
  • Steam turbine parts
  • Valve parts for oil fields

Chemical Composition
Carbon Manganese Silicon Chromium
t410 0.15 Max.
T410S 0.08 max.		 1.00 max. 1.00 max. 11.50/13.50

Typical Mechanical Properties
Finish/
Condition		 Yield
Strength
psi		 Tensile
Strength
psi		 Elongation
in 2 in.,
%		 Hardness
Rockwell
B
No. 1/2D Finish,
annealed		 40,000 70,000 31 80
No. 2/2B Finish,
skin passed		 49,000 70,000 31 85

Processing

  • Annealing
    Full anneal - cool slowly from 1500-1600°F. A typical cooling practice is 25-50°F per hour to 1100°F in the furnace, then cool in the air.
    Low temperature anneal (process anneal) - 1200-1400°F followed by air cooling. See table of Typical Mechanical Properties.
  • Hardening
    Type 410 can be hardened by heating to 1700-1850°F and quenching in oil in air. Representative mechanical properties after hardening and tempering are given in the following table.
Nominal Mechanical Properties - Hardened and Tempered
Hardening Temperature °F As-quenched Harness Brinell Tempering Temperature °F Tensile Strength ksi Yield Strength 0.2% offset, ksi Elongation in 2 in., % Reduction of Area % Impact Resistance Izod V-notch ft-lb Hardness Brinell
1800-oil quench 410 400 190 145 15 55 35 390
600 180 140 15 55 35 375
800* 195 150 17 55 - 390
1000 145 115 20 65 - 300
1200 110 85 23 65 75 225
1400 90 60 30 70 100 180
* Tempering within the range of 700 to 1100°F is not recommended due to low and erratic impact properties.
  • Stress Relieving
    The recommended temperature range for stress relieving is 400-600°F.

Hot Working

  • Initial forging and pressing temperature - 2000-2200°F.
  • Finishing temperature - 1600°F.

Forming
These grades in the annealed condition can be readily formed into most desired shapes.

Physical Properties
Density
lb./cu. in.		 Modulus of
Elasticity
in Tension
x 10^6, psi		 Specific
Heat
Btu/°F/lb		 Thermal
Conductivity
Btu/hr/ft^2/ft/		 Mean Coefficient
of Thermal Expansion
per °F(x 10^-6)		 Melting
Point
Range		 Electrical
Resistivity
microohm-cm
32-212 °F °F °F °F @ 70 °F
0.28 29.0 0.11 212 932 32-212 32-600 32-1000 32-1200 2700/
2790		 57
14.4 16.6 5.5 5.6 6.4 6.5

Elevated Temperature Strength
Creep Strength,
load for 1% elong
10,000 hr,psi		 Temperature
1000 °F 1100 °F 1200 °F 1300 °F
9000 4200 4000 1000

Welding
When welding Type 410 stainless, it is recommended that an electrode which will produce the same chemical composition be employs. Type 410 should br preheated to at least 300°&F before welding. Types 309 and 310 electrodes may be used in many applications. Using low currents may obviate preheating.

Corrosion
Type 410 stainless exhibits corrosion resistance to atmosphere, fresh water, mild acids and alkalies. However, it may stain when exposed to weather. If appearance is important on exterior exposure, surface can be protected by plating or painting. It is not recommended where it is to be in continuous contact with food.

Oxidation
These grades have very good oxidation resistance up to 1250°&F for continuous service, and up to 1400°&F for intermittent service.
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