Composition (Nominal)
0.50 C, 0.70 Mn, 0.30 Si, 3.25 Cr, 1.40 Mo, Bal. Fe
This air-hardening tool steel with high impact and shock resistance, and good resistance to softening at moderately high temperatures, is an excellent general-purpose steel. Has been used for many hot-work and cold-work applications. Available as DeCarb-Free (DCF).