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

Table 5

Chemical composition of M₂₃C₆ 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	4.85	41.04	0.01	14.32	4.22	—	35.56
	Measured	4.30	45.41	—	12.10	3.56	—	34.63
Vanadium-modified T1 high-speed tool steel
2 V- 13W	Calculated	4.87	43.60	0.01	13.26	5.39	---	32.87
	Measured	4.25	40.20	—	10.26	5.20	—	40.09
3V-8W	Calculated	4.92	47.59	0.01	11.35	7.42	—	28.71
	Measured	4.78	44.2	—	9.51	7.20	—	34.31
4V-3W	Calculated	—	—	—	—	—	—	—
	Measured	—	—	—	—	—	—	—
Vanadium with extra carbon-modified T1 high-speed tool steel
2V-13W-HC	Calculated	4.83	36.89	0.01	14.45	3.99	—	39.83
	Measured	5.20	35.90	—	13.50	4.50	—	40.90
3V-8W-HC	Calculated	4.83	34.73	0.01	14.62	3.73	—	42.09
	Measured	5.15	30.90	0.00	11.61	4.30	—	48.04
4V-3W-HC	Calculated	—	—	—	—	—	—	—
	Measured	—	—	—	—	—	—	—