
Mild steel
AKA: A36 / Q235 class
Economical structural steel; powder / black oxide / zinc common.
Material family
Mild to alloy and tool steels — tooling, shafts, wear duty.
4 quote-ready grades


AKA: A36 / Q235 class
Economical structural steel; powder / black oxide / zinc common.

AKA: 1045 / C45
Medium-carbon steel; stronger than mild steel — common for shafts.

AKA: 4140 / 42CrMo class
Alloy structural steel; confirm heat treatment with engineering.

AKA: general tool-steel class
Wear/tooling class — specify exact grade in notes (SKD / S136 etc. via engineer).
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