Chemical Composition
Carbon
Manganese
0.40 - 0.70%
Silicon
0.60% Max
Phosphorus
0.04% Max
Sulfur
0.045% Max
Chromium
0.50 - 0.90%
Nickel
0.60 - 1.00%
Molybdenum
0.90 - 1.20
Tungsten
0.10% Max
Copper
0.50% Max
Residual Elements
0.60% Max
Physical Properties
Yield Strength
40 ksi Min
Tensile Strength
70 - 95 ksi
Elongation at 2 in
0.2
Reduction of Area
0.35
Resources
ASTM Standard
