Grain size

The average size of the crystals in steel, graded on the ASTM E112 scale (higher number = finer grain). Fine grain improves toughness and yield strength together; overheating coarsens grain and is corrected by normalizing.

More terms

Annealing · Austenite · Bainite · Carbon equivalent (CEV) · Carburizing · Case hardening · Charpy impact test · Cold drawn · Decarburization · Elongation (A) · ESR (electroslag remelting) · Ferrite