CHEMICAL COMPOSITION
|
Carbon
|
0.20% Max
|
|
Manganese
|
0.35 – 0.65%
|
|
Silicon
|
1.00% Max
|
|
Phosphorus
|
0.035% Max
|
|
Sulfur
|
0.035% Max
|
|
Nickel
|
0.50% Max
|
|
Chromium
|
8.00 – 10.00%
|
|
Molybdenum
|
0.90 – 1.20%
|
|
Copper
|
0.50% Max
|
|
Tungsten
|
0.10% Max
|
|
Columbium
|
0.03% Max
|
|
Total of residual elements
|
1.00% Max
|
PHYSICAL PROPERTIES
|
Tensile Strength
|
90,000 – 115,000 PSI
|
|
Yield Strength
|
60,000 PSI Min
|
|
Elongation at 2in.
|
18.0% Min
|
|
Reduction of area
|
35.0% Min
|