China · JB

60

JB/T 8491.1:2008 — Technical requirement heat treatment for machine tool parts. Part 1:Annealing and normalizing or hardening and tempering

Mechanical properties

value range by condition
HardnessHBnormalizedHardnessHBannealed

Mechanical properties

Heat treatment / conditionYield strengthTensile strengthElongationReduction of areaImpact energyHardness
normalizedHB 197–255
annealedHB 179–229