Hastelloy G-3 (UNS N06985)

Hastelloy G-3 (UNS N06985) is a nickel-chromium-iron alloy with additions of molybdenum and copper. It has good weldability and resistance to intergranular corrosion in the welded condition. The low carbon content helps prevent sensitization and consequent intergranular corrosion of weld heat-affected zones. Used for flue-gas scrubbers and for handling phosphoric and sulfuric acids.

Equivalent Grades

Trademarks	GB	JIS	KS	ASTM	UNS	DIN	W.Nr	GOST	BS	NF
Hastelloy G-3 Nicrofer 4023 hMo	NS3404	–	–	Hastelloy G-3	N06985	–	2.4619	–	–	–

Product Forms

Wire, Bar, Strip, Sheet, Plate, Tube, Pipe, Pipe Fittings, Forgings

Chemical Composition,%

C	P	S	Mn	Si	Cr	Ni	Co	Mo	W	Nb+Ta	Cu	Fe
≤0.015	≤0.04	≤0.03	≤1.00	≤1.00	28.00~31.50	Bal	≤5.00	6.00~8.00	≤1.50	≤0.50	1.50~2.50	18.00~21.00

Typical Physical & Mechanical Properties (RT, Annealed)

Density, g/cm3	Melting Point, ℃	Tensile Strength, MPa	Yield Strength, MPa	Elongation,%
8.14	1260~1343	690	321	50

Specifications

Rod, Bar, Wire, Forgings	ASTM B581, ASME SB581, DIN 17752
Plate, Sheet, Strip	ASTM B582, ASME SB582, DIN 17750, ISO 6208
Pipe, Tube	ASTM B619, ASTM B622, ASTM B626, ASTM B751, ASTM B775, ASTM B829, ASME SB619, ASME SB622, ASME SB626, ASME SB751, ASME SB775, ASME SB829
Others	ASTM B366, ASME SB366