Hastelloy B-2 (ERNiMo-7) Welding Wire Guide

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Overview

Hastelloy B-2 (AWS ERNiMo-7) is a nickel-molybdenum welding wire for welding Hastelloy B-2 and B-3 alloys. Provides excellent resistance to hydrochloric acid at all concentrations and temperatures. Low carbon and iron content minimizes carbide precipitation.

Welding Parameters

Parameter	GTAW	GMAW
Shielding Gas	Argon (99.995%)	Ar + 2% He or Ar + 2% CO2
Gas Flow Rate	8-15 L/min	15-25 L/min
Wire Diameter	1.6-3.2 mm	0.8-1.6 mm
Current Type	DCEN	DCEP
Welding Position	All positions	Flat / Horizontal

Applications

Hastelloy B-2 welding wire is used in a wide range of demanding applications:

• HCl Service: Welding of equipment handling hydrochloric acid.
• Chemical Processing: Welding of B-2/B-3 process equipment and piping.
• Reducing Environments: Welding for environments with reducing acids.
• Vacuum Furnaces: Welding of vacuum furnace components.
• Pharmaceutical: Welding of high-purity process equipment.

Available Product Forms

Hangbo Alloy Group supplies Hastelloy B-2 welding wire in the following forms:

• TIG Wire: Straight lengths 1000 mm, diameters 1.6 mm, 2.0 mm, 2.4 mm, 3.2 mm.
• MIG Wire: Precision-wound spools (D200, D300), diameters 0.8 mm, 1.0 mm, 1.2 mm, 1.6 mm.
• SAW Wire: Coils for submerged arc welding, diameters 2.4 mm, 3.2 mm, 4.0 mm.

Related Standards

Standard	Description
AWS A5.14	ERNiMo-7
ISO 18274	S Ni 1066
EN ISO 18274	S Ni 1066
DIN 1736	SG-NiMo28

Contact Us for Hastelloy B-2

Hangbo Alloy Group supplies Hastelloy B-2 (ERNiMo-7) welding wire with full material certifications. We ensure consistent wire quality with precise diameter control, clean surface finish, and uniform feeding performance.

For quotations, material certifications, or technical consultation, contact our sales team or call +86-136-1165-6360.