- 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 |
Nitrogen |
|
|
|
|
|
|
0.15
max. |
5.50/
7.50 |
1.00
max. |
16.00/
18.00 |
3.50/
5.50 |
0.25
max. |
Typical Mechanical Properties
Finish/
Condition |
Yield
Strength
psi |
Tensile
Strength
psi |
Elongation
in 2 in.,
% |
Hardness
Rockwell
B |
|
|
|
|
|
No. 1/2D Finish,
annealed |
41,000 |
100,000 |
58 |
85 |
No. 2/2B Finish,
skin passed |
46,000 |
102,000 |
55 |
55 |
- 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 201 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 pressing temperature--2150-2250°F.
- Finishing temperature--above 1600°F.
Forming
This grade can be formed into most shapes without great difficulty. Because the grade will work harden, it is suggested that an annealing treatment precede and follow each severe forming operation.
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/
2650 |
69 |
| 9.4 |
- |
8.7 |
9.7 |
10.2 |
- |
Welding
Type 201 can be joined by arc-welding, spot, projection and seam welding processes. Arc-welding can be performed by coated electrode or the inert-gas processes. For maximum corrosion resistance, it is suggested that weldments be annealed by heating to 1750-2000°F and cooling rapidly. Type 308 electrodes are generally used.
Corrosion
Type 201 has a corrosion resistance approaching that of Types 302 and 304 in many environments.
Oxidation
For continuous elevated temperature service, excellent resistance to oxidation is obtained up to 1550°F. In intermittent service, temperatures should be kept below 1400°F.
|
