X30WCrV9-3
1.2581Tungsten-alloyed hot work tool steel (AISI H21) with 9% W for exceptional high-temperature strength and resistance to tempering. Low thermal conductivity makes rapid cooling unacceptable — tools must be preheated to ~300°C before use. Achieves 44-50 HRC. Used for die casting dies for copper alloys (brass/bronze), hot forging dies, hot extrusion tooling, hot shear blades, and mandrels. The go-to steel for copper alloy die casting where H13 would soften. JIS: SKD5.
Mechanical properties
Related materials
X210Cr12
1.2080High-carbon high-chromium cold-work tool steel. Excellent wear resistance and dimensional stability after heat treatment. Used for blanking and forming dies, drawing mandrels, gauges, shear blades, and thread rolling dies. Not suitable for impact loading.
D2 / X155CrVMo12-1
1.2379Premium high-carbon high-chromium cold-work tool steel with vanadium and molybdenum. Air-hardening with minimal distortion. Superior wear resistance and edge retention. The global benchmark for cold stamping dies, blanking tools, shear blades, and forming tools.
P20 / 40CrMnMo7
1.2311Pre-hardened plastic mold steel (usually delivered at 28-34 HRC). The most widely used mold base steel globally. Good machinability in pre-hardened condition, good polishability. Used for injection molds, die-casting dies, extrusion tooling, and structural mold components.
Export this comparison as PDF
Professional datasheet with equivalents, composition, and properties. Ready for your QM documentation.
Download PDF — €4.90Included with PRO subscription