Carbon 1.10% to 1.35%
Silicon .25% to .35%
Resulphurized to .06%
Phosphorus not over .06%
1917 Einfield Barrel made of smokeless barrel steel.
Carbon .45% to .50%
Manganese 1.10% to 1.35%
Silicon .20% to .30%
Phosphorus under .06%
Sulfur under .06%
Garand Barrel made of 4150 Modified
Carbon .45% to .60%
Manganese .60% to .90%
Chromium .80% to 1.10%
Molybdenum .15% to .25%
Silicon .15 to .35%
Phosphorus not over .04%
Resulphurize .04% to .09%
M-1 Carbine Material 1350 (Stress Proof)