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Mild to alloy and tool steels — tooling, shafts, wear duty.

4 quote-ready grades

Mild steel

AKA: A36 / Q235 class

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EconomicalPowder / black oxideEasy to machine

Economical structural steel; powder / black oxide / zinc common.

AKA: 1045 / C45

CNC ga-dɔwɔwɔkabakaba-la nu-gbã-sue

Medium carbonShaftsHeat-treatable

Medium-carbon steel; stronger than mild steel — common for shafts.

AKA: 4140 / 42CrMo class

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High strengthTough / impactConfirm heat treat

Alloy structural steel; confirm heat treatment with engineering.

AKA: general tool-steel class

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Wear resistantTooling classSpecify grade in notes

Wear/tooling class — specify exact grade in notes (SKD / S136 etc. via engineer).