CHEMICAL COMPOSITION
|
Carbon
|
0.08 – 0.12%
|
|
Manganese
|
0.30 -0.60%
|
|
Silicon
|
0.20 – 0.50%
|
|
Phosphorus
|
0.025% Max
|
|
Sulfur
|
0.010% Max
|
|
Nickel
|
0.40% Max
|
|
Chromium
|
8.0 – 9.5%
|
|
Molybdenum
|
0.85 – 1.05%
|
|
Vanadium
|
0.18 – 0.25%
|
|
Nitrogen
|
0.030 – 0.070%
|
|
Aluminum
|
0.02% Max
|
|
Columbium
|
0.060 – 0.10%
|
|
Titanium
|
0.01% Max
|
|
Zirconium
|
0.01% Max
|
PHYSICAL PROPERTIES
|
Tensile Strength
|
85,000 – 110,000 PSI
|
|
Yield Strength
|
60,000 PSI Min
|
|
Elongation at 2in.
|
18% Min
|
|
Reduction of area
|
45% Min
|