47НД | HB SPEICAL ALLOY

GB	ГОСТ	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
S4J47A	47НД	–	–	–	–	–	–	–	–

Alloy	C	Mn	Si	P	S	Ni	Cu	Fe
S4J47A	≤0.05	≤0.4	≤0.3	≤0.015	≤0.015	46-48	4.5-5.5	Rest

Alloy	Heat treatment for sample	Average linear expansion coefficient a/10-6.K-1			Inflection point /℃
S4J47A	Heating to temperature between 850~900℃ in a protective or vacuum atmosphere. Holding for 1hour, cooling to 400℃ at a rate less than 300℃ per hour, then air cooling	20~300℃	20~400℃	20~450℃	≥420
		9.2~10.1	9.3~9.9	9.8~10.4