50Mn
Data verified50Mn is the GB/T 699 high-manganese counterpart of grade 50, giving better hardenability for Q&T shafts and wear parts at plain-carbon cost.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.48–0.56 |
| Si | 0.17–0.37 |
| Mn | 0.70–1.00 |
| P | ≤0.035 |
| S | ≤0.035 |
| Cr | ≤0.25 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Density | 7.85 g/cm³ |
| Note | Higher hardenability than grade 50; used Q&T or induction hardened |
Heat treatment
Quench and temper; induction hardening for wear surfaces.
Equivalent grades
| Standard | Designation |
|---|---|
| aisi | 1050 (near) |
| gb | 50Mn (GB/T 699) |
Compare side by side: 50Mn vs 1050
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Shafts, gears, sprockets, wear parts, spring washers.
Processing: Welding difficult at this carbon level; machine annealed or normalized.
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Ask for a quotationVisit NasteelSource: GB/T 699-2015 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.