Number	International Standard	C	Mn	Si	Cu	S	P	Re
J50	GB ER50-6 AWS ER70S-6	0. 06-0. 15	1. 40-1. 85	0. 85-1. 15	≤0. 30	≤0. 025	≤0. 025	minim
H08Mn2SiA	GB ER49-1	≤0. 11	1. 80-2. 10	0. 65-0. 95	≤0. 35	≤0. 03	≤0. 03