Mechanistic Study of Rail Gouging during Hypersonic Rocket Sled Tests

Table 1

Chemical composition of U71Mn rail steel (wt. %).

	C	Si	Mn	P	S
Measured	0.726	0.231	1.296	0.018	0.005
YB/T 5055-2014	0.65∼0.76	0.15∼0.58	0.70∼1.40	≤0.035	≤0.030