
Corrosion Resistance : Very good
Yield point: up to 50 ksi [345 MPa] minimum
High-strength low-alloy structural steel

- Strength, Yield Strength ksi (MPa), Tensile Strength ksi (MPa): Strongest, 105-135 (725-930)
- Formability: % Elongation: Basic, 21%
For better formability consider Drawing Steel - Joining – Fair
Design and welding must account for stresses. - Corrosion Resistance – Very Good
When properly exposed to the atmosphere, this steel is appropriate for many uses unpainted. (The atmospheric corrosion resistance of this steel in most environments is significantly better than that of carbon structural steels with or without copper addition.) - Chemistry – Medium carbon, medium manganese, silicon, copper, alloyed with Chromium, and Molybdenum
- Cost – Higher.
Good when thinner or stronger steels will add value.