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Type 301 Stainless Steel

Description
Type 301 (UNS S 30100) is an austenitic chromium-nickel stainless steel capable of attaining high tensile strength and ductility by cold working. It is not hardenable by heat treatment. Type 301 is essentially nonmagnetic in the annealed condition and becomes magnetic with cold deformation.

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

Typical Applications

  • Appliances, utensils and cutlery; restaurant; institutional and household furnishings such as pots, pans, flatware, counters, splash shields, sinks, dishwasher components, oven parts
  • Automotive trim, moldings, wiper arms, fastener parts
  • Architectural and construction hardware, hinges, doors, frames, roll formed sections
  • Food processing and handling, milk and dairy products, beer, wine, beverages, conveyors
  • Transportation, rapid transit cars, buses, aircraft, cargo containers
Chemical Composition
Carbon Manganese Silicon Chromium Nickel
0.15 max. 2.00 max. 1.00 max. 16.00/18.00 6.00/8.00

Typical Material Properties
Finish/
Condition
Yield
Strength
psi
Tensile
Strength
psi
Elongation
in 2 in.,
%
Hardness
Rockwell
B
No. 1/2D Finish,
annealed
43,000 106,000 56 86
No. 2/2B Finish,
annealed
46,000 106,000 54 88

Processing

  • Annealing
    Heat in the range of 1850-2050°F and cool rapidly. Light gauges (under 16 gauge) may be air cooled. Heavier sections require water quenching from annealing temperature.
  • Hardening
    Type 301 can be hardened only by cold working. See table of Typical Mechanical Properties.
  • Stress Relieving
    The recommended temperature range for stress relieving is 400-750°F.

Hot Working

  • Initial forging and hot working temperature--2100-2300°F.
  • Finishing temperature--1600°F.
  • For upsetting operations, the finish temperature should be above 1700°F

Forming
Type 301 is adaptable to fabrication by bending, roll forming, drawing, stretch bending and blanking. The high work hardening rate of Type 301 helps minimize wall thinning on deformation. Deep drawing may require intermediate annealing.

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
microohn-cm
32-212 °F °F °F °F @ 70 °F
0.29 28.0 0.12 212 932 32-212 32-600 32-1000 32-1200 2550/2590 72
9.4 12.4 9.4 9.5 10.1 10.4

Welding
Type 301 is adaptable to welding by electronic arc, gas fusion or electronic arc, gas fusion or electrical resistance process. Since the material may be subject to carbide precipitation during welding, it is possible that areas adjacent to the weld may have poorer resistance to chemical attack. Resotration of normal corrosion resistance can be obtained by heating to 1750-2000°F and cooling rapidly. If subsequent annealing is impractical, then Type 304 with 0.08 maximum carbon, one of the 0.03 maximum carbon grades such as Type xxx.

Corrosion
Type 301 has a corrosion resistance approaching that of Types 302 and 304 in many environments.

Oxidation
For continuous elevated temperature service, execellent resistance to oxidation is obtained up to 1550°F. In intermittent service, temperatures should be kept below 1450°F.

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