State check
A Jominy end-quench test reports hardness versus distance from the quenched end of a standard specimen. That distance is not the case depth or radial depth of an arbitrary component.
Next step
Request the grade or heat-specific hardenability information, test standard and acceptance criterion. Check component size and quench conditions separately; do not predict a finished part's core hardness from the grade name alone.
Carry the final condition into the material record
A process name does not supply a universal hardness, strength, temperature, dimensional allowance or cutting parameter.
Sources and scope
Reviewed 23 October 2026. Process explanations and public standard summaries do not establish a treatment recipe or certify a supplied part.
ASTM A255-20 public scope
Process definition and stated condition boundaries; public standard abstracts only where applicable.
Open source ↗ISO 642:2024
Process definition and stated condition boundaries; public standard abstracts only where applicable.
Open source ↗