4Cr5MoWVSi T26050 - GB /T 1299-2025

4Cr5MoWVSi Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Mo	W	V	More
Minimum Value	0.32	0.8	0.2	-	-	4.75	-	1.25	1.1	0.2	Cu+Ni≤0.55
Maximum Value	0.4	1.2	0.5	0.025	0.02	5.5	0.25	1.6	1.6	0.5	Cu+Ni≤0.55

• Smelting method: Vacuum degassing

4Cr5MoWVSi Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
Delivery condition	Annealing	≤235
Specimen	Quenching at 1000-1030°C, oil or air cooling	①

New and Old Grade Replacement List

Approximate Comparison Table Hot Work Tool Steel

China		United States	International Organization for Standardization
GB	ISC	ASTM	ISO
4Cr5MoWVSi	T23324	H12	X35CrWMoV 5

4Cr5MoWVSi Corresponding Standards(Same grade name, different standards)

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