Stressproof® Chemistry

ASTM A311

Stressproof®

Carbon

0.40 / 0.48

Manganese

1.35 / 1.65

Phosphorus

0.04 Max.

Silicon

0.35 Max.

Sulfur

0.24 / 0.33

* AISI 1144 heats to be used for Stressproof® are nitrogen treated, and contain nitrogen in quantities normally associated with steel produced by the electric furnace process.