4Cr3Mo3SiV T23670 - GB /T 1299-2025

4Cr3Mo3SiV Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Mo	V	More
Minimum Value	0.35	0.8	0.25	-	-	3	-	2	0.25	Cu+Ni≤0.55
Maximum Value	0.45	1.2	0.7	0.025	0.02	3.75	0.25	3	0.75	Cu+Ni≤0.55

• Smelting method: Vacuum degassing

4Cr3Mo3SiV Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
Delivery condition	Annealing	≤229
Specimen	Preheat to 790 ± 15 ℃, 1020 ℃(controllable atmosphere) ± 6℃ or Heat at 1010 ℃(salt bath), hold for 5 to 15 min, oil cooling . Temper at 550 ±6 ℃ twice, each time for 2 h	①

New and Old Grade Replacement List

Approximate Comparison Table Hot Work Tool Steel

4Cr3Mo3SiV Corresponding Standards(Same grade name, different standards)

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