Hastelloy G-30 (UNS N06030 / W.Nr. 2.4603)

Hastelloy G-30 (UNS N06230 / W.Nr. 2.4603) is an improved version of nickel-chromium-iron-molybdenum-copper alloy G-3. With higher chromium, added cobalt and tungsten, the G-30 shows superior corrosion resistance over most other nickel and iron based alloys in commercial phosphoric acids as well as complex environments containing highly oxidizing acids. The resistance of the alloy to the formation of grain boundary precipitates in the heat-affected zone makes it suitable for use in most chemical process applications in the as-welded condition.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Hastelloy G-30	NS3404	–	Hastelloy G-30	N06030	NiCr30FeMo	2.4603	–	–	–	–

Chemical Composition, %

Alloy

Nb+Ta

Hastelloy G-30

≤0.03

≤0.80

≤1.50

≤0.04

≤0.03

28.0-31.5

Bal

≤5.00

4.0-6.0

1.5-4.0

0.3-1.5

1.0-2.4

13.0-17.0

Typical Physical and Mechanical Properties (RT, Solution annealed)

Density, g/cm3	Melting Point, ℃	Tensile Strength, MPa	Yield Strength, MPa	ELongation, %	Hardness, HB
8.22	1332-1361	690	325	56	–

Available Products and Specifications

Rod, Bar, Wire and Forgings	ASTM B462, ASTM B581, ASME SB462, ASME SB581
Plate, Sheet and Strip	ASTM B575, ASME SB575
Pipe and Tube	ASTM B619, ASTM B622, ASTM B626, ASME SB619, ASME SB622, ASME SB626
Welding Product	AWS A5.14 ERNiCrMo-11, ASME Ⅱ SFA-5.14 ERNiCrMo-11, ASME Ⅸ F-No.45
Others	ASTM B366, ASTM B462, ASME SB366, ASME SB462

Features

Hastelloy G-30 shows superior corrosion resistance in commercial phosphoric acids as well as complex environments containing highly oxidizing acids such as nitric/hydrochloric, nitric/ hydrofluoric and sulfuric acids.