20MnMoB
20MnMoB is a designation in GB for the grade also listed as 80B20. We list 2 designations recorded for this grade, in the standards ASTM and GB.
- Designations 2
Also known as
2 designations · 2 standards · nothing hidden- 20MnMoBThis grade’s own name
Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.
Predicted transformation temperatures
Not enough recorded composition to predict a transformation temperature for this grade — missing: C, Mn, Si, Ni, Cr, Mo.
Physical & mechanical properties
An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material.
Properties by condition
1 conditions · 4 valuescaishuku| Diametermm | RmN/mm² | ReN/mm² | A% | HB |
|---|---|---|---|---|
| 15 – 15 | ≥ 1080 | ≥ 885 | ≥ 10 | ≤ 207 |
1 further values are held for this grade under a condition the source did not name — a bound with no quantity attached. They are withheld rather than shown against a guessed condition.
Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ.
Heat treatment
Supply condition
- Quenching
- Carburizing
- Quenching and Temperingd=15
Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied.
Source: www.caishuku.com
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