4140 Q&T Steel Properties / 4140 Quenched and Tempered Steel

4140 Q&T Steel Properties / 4140 Quenched and Tempered Steel. Highest Strength Variant: Quenched and tempered SAE-AISI 4140 offers the highest strength among all SAE-AISI 4140 steel variants. Wide Size Range: Available in diameters from M12 to M1000 across hot rolled, cold drawn, and peeled conditions. Global Standard Equivalents: Matches JIS SCM440, DIN 1.7255, GB 42CrMo, and BS 708M40 standards for international compatibility. Precise Hardness Control: Oil quenched and tempered hardness ranges from 28-34 HRC, with annealed hardness under 250HB. Comprehensive Quality Control: Includes spectral, microstructure, hardness, macrostructure, and UT testing for every batch. Low Gas Content: Strict control ensures O2 <20 ppm, H2 <2 ppm, and N2 <100 ppm for superior material purity. Fast Stock Delivery: 7-10 days delivery for stock items, with 30 days lead time for new production orders. Customizable Properties: Mechanical properties can be adjusted to meet specific customer requirements.