Table 1.

Chemical composition of the base metal.

Steel Mark (Designation)
ISO DIS	JUS (SRPS)	DIN		GOST	US
		17,007	17,006		AISI/SAE	UNS
≈20 MnCr5	Č4321	1.7147	20 MnCr5	18 HGT	4820	G48200
Alloying Elements (%)
C	Si	Mn	Pmax	Smax	Cr
0.17–0.22	0.15–0.40	1.1–1.4	0.035	0.035	1.0–1.3