Study on the Microstructure of Vanadium-Modified Tungsten High-Speed Steel-Coded SAE-AISI T1 Steel

Table 4

Chemical composition of M₆C carbide for T1 high-speed tool steel and its different variants (as solidified).

Steel designation	State	Chemical composition, wt. %
		C	Cr	V	W	Mo	Si	Fe
Standard T1 high-speed tool steel
T1 high speed	Calculated	1.81	1.37	1.86	68.02	1.23	0.00	25.70
	Measured	2.50	7.10	3.20	60.7	1.30	0.00	25.4
Vanadium-modified T1 high-speed tool steel
2V-13W	Calculated	1.82	1.44	2.40	67.42	1.65	—	25.27
	Measured	1.78	0.36	3.72	70.49	1.10	—	22.55
3V-8W	Calculated	1.85	1.53	3.53	66.09	2.48	—	24.52
	Measured	1.81	0.37	5.67	69.26	2.70	—	20.19
4V-3W	Calculated	1.92	1.20	6.96	62.36	4.64	—	22.93
	Measured	1.88	0.33	9.18	66.91	5.20	—	16.50
Vanadium with extra carbon-modified T1 high-speed tool steel
2V-13W-HC	Calculated	1.81	1.24	1.27	68.19	1.20	—	26.29
	Measured	1.74	0.29	1.12	71.52	0.90	—	24.43
3V-8W-HC	Calculated	1.81	1.16	1.05	68.29	1.12	—	26.57
	Measured	1.75	0.25	0.62	71.33	0.50	—	25.55