A36 steel — common ASTM carbon structural steel A36 steel A36 is a widely used ASTM specification for low‑carbon structural steel in the United States, known for its economical strength, weldability, and use in construction shapes, plates…
Carburization (carburizing): surface hardening of steels Carburization Carburization is a heat-treatment process that diffuses carbon into the surface of low‑carbon steels to develop a hard, wear‑resistant case while retaining a tougher, ductile core.