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Alloy G-30

information

Equivalent designations
UNS N06030
DIN W. Nr. 2.4603

Form	ASTM
Rod	B 581
Plate, sheet and strip	B 582
Seamless pipe and tube	B 622
Welded pipe	B 619, B 775
Welded tube	B 626, B 751
Welding fitting	B 366
Forged or rolled pipe flange and forged fitting	B 462
Billet and bar for reforging	B 472

Chemical composition

%	Ni	Cr	Fe	Mo	W	Co	C	Mn	Si	P	S	Cu	Nb+Ta
min	balance	28.0	13.0	4.0	1.5							1.0	0.30
max	balance	31.5	17.0	6.0	4.0	5.0	0.030	1.5	0.80	0.040	0.020	2.4	1.50

Physical properties

Density	8.22 g/cm3
Melting range	1370-1400℃

Features: Hastelloy G-30 is a high chromium nickel-base alloy which has superior corrosion resistance over most other nickel and iron-base alloys in commercial phosphoric acid as well as many complex environments containing highly oxidizing acids such as nitric/hydrochloric, nitric/hydrofluoric and sulfuric acids. It resists the formation of grain boundary precipitates in the heat-affected zone, making it suitable for use in most chemical process environments in the as-welded condition.

Applications: Chemical processing involving phosphoric acid, sulfuric acid and nitric acid; nuclear fuel reprocessing; nuclear waste processing; pickling operations; petrochemical; fertilizer manufacture; pesticide manufacture; and gold ore extraction.

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