ASTM E140 Hardness conversion tables
ChangingA new edition or revision is being prepared. Check before you specify.
- Edition
- -12b(2019)e1, revision work item open
- Publisher
- ASTM
- Part family
- Testing, certificates & NDT
- Reviewed
- 22 October 2026 · source checked
Is ASTM E140 still current?
Yes, but a revision is coming. It is still in use, but a revision is in progress. The current reference is -12b(2019)e1, revision work item open (MechAtlas review: 22 October 2026). Check the publisher before you specify it.
What it covers
Hardness conversion tables
Equivalent and related standards
| Standard | Relationship | Note |
|---|---|---|
| ISO 18265 | Similar purpose — not interchangeable without an engineering check |
“Similar” never means interchangeable without an engineering check.
Official source
MechAtlas does not reproduce standards. Check the official edition at the publisher's page for ASTM E140 or the ASTM store.
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Other testing, certificates & ndt standards
- EN 10204 Changing
Metallic product inspection documents - ISO 148-1 / ASTM E23 Changing
Charpy impact test - ISO 3452-1 / 9934-1 / 16810 / 17640 / 17637 Changing
PT, MT, UT general, UT of welds, visual of welds - ISO 6506-1 Changing
Brinell hardness method - ASTM E8/E8M Current
Tension testing of metallic materials - ISO 10012 Current
Measurement management systems - ISO 18265 Current
Hardness conversion (approximate) - ISO 2859-1 Current
AQL sampling - ISO 6508-1 Current
Rockwell hardness method - ISO 6892-1 Current
Tensile test, room temperature - ISO 9001 Current
Quality management systems - ISO 9712 Current
NDT personnel qualification