HRB400
HRB400 is a grade designated under GB. Its recorded composition includes C ≤ 0.25%, Si ≤ 0.8%, P ≤ 0.045%, S ≤ 0.045% and Mn ≤ 1.6%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm ≥ 540 N/mm².
- Designations 1
Chemical composition
5 elements on file · weight %What this alloy is
Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.
| Element | % by weight |
|---|---|
≤ 0.25 | |
≤ 0.8 | |
≤ 1.6 | |
≤ 0.045 | |
≤ 0.045 |
The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other.
| Element | As publishedsource text, verbatim | Min% by weight | Max% by weight | Bound |
|---|---|---|---|---|
| C | ≤0.25 | — | 0.250 | Max |
| Si | ≤0.8 | — | 0.800 | Max |
| P | ≤0.045 | — | 0.045 | Max |
| S | ≤0.045 | — | 0.045 | Max |
| Mn | ≤1.6 | — | 1.600 | Max |
The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred.
Predicted transformation temperatures
Not enough recorded composition to predict a transformation temperature for this grade — missing: 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
0 conditions · 0 values1 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.
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