Hastelloy G-35 (UNS N06035/2.4643)

Hastelloy G-35 (UNS N06035/2.4643) is a nickel-chromium-molybdenum alloy designed to resist “wet process” phosphoric acid, which is used in the production of fertilizers. Similar to Hastelloy G-30, Hastelloy G-35 alloy also has excellent resistance to localized attack in the presence of chlorides, since this can be a problem beneath deposits in evaporators used to concentrate “wet process” phosphoric acid. Besides, it is much less susceptible to chloride-induced stress corrosion cracking than the stainless steels and nickel-chromium-iron alloys traditionally used in “wet process” phosphoric acid.

Due to the high chromium content, Hastelloy G-35 is extremely resistant to other oxidizing acids, such as nitric, and mixtures containing nitric acid. It possesses moderate resistance to reducing acids, as a result of its appreciable molybdenum content and unlike other Ni-Cr-Mo alloys, it is very resistant to “caustic dealloying” in hot sodium hydroxide.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Hastelloy G-35	–	–	Hastelloy G-35	N06035	NiCr33Mo8	2.4643	–	–	–	–

Chemical Composition, %

Alloy

Hastelloy G-35

≤0.05

≤0.60

≤0.50

≤0.03

≤0.015

32.25-34.25

Bal

≤1.00

7.6-9.0

≤0.60

≤0.40

≤0.30

≤0.20

≤2.0

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	710	317	66	–

Available Products and Specifications

Rod, Bar, Wire and Forgings	ASTM B462, ASTM B472, ASTM B564, ASTM B574, ASME SB462, ASME SB472, ASME SB564, ASME SB574
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-22, ASME Ⅱ SFA-5.14 ERNiCrMo-22, ASME Ⅸ F-No.43
Others	ASTM B366, ASTM B462, ASME SB366, ASME SB462, DIN 17744