68А
68А is a grade designated under GOST. Its recorded composition includes C 0.65–0.7%, Si 0.15–0.25%, Mn 0.4–0.55%, Ni ≤ 0.2% and Cu ≤ 0.15%. No cross-standard equivalents are recorded for this grade yet.
- Designations 1
Chemical composition
9 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 |
|---|---|
0.65–0.7 | |
0.15–0.25 | |
0.4–0.55 | |
≤ 0.025 | |
≤ 0.025 | |
≤ 0.12 | |
≤ 0.2 | |
≤ 0.15 | |
≤ 0.05 |
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 | 0.65 - 0.7 | 0.650 | 0.700 | Range |
| Al | max 0.05 | — | 0.050 | Max |
| Si | 0.15 - 0.25 | 0.150 | 0.250 | Range |
| P | max 0.025 | — | 0.025 | Max |
| S | max 0.025 | — | 0.025 | Max |
| Cr | max 0.12 | — | 0.120 | Max |
| Mn | 0.4 - 0.55 | 0.400 | 0.550 | Range |
| Ni | max 0.2 | — | 0.200 | Max |
| Cu | max 0.15 | — | 0.150 | 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: 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.
Looking for this grade under another name?
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