# Hastelloy B-2

*N10665 · NS3202*

> Low-carbon variant of Hastelloy B with improved weld zone corrosion resistance.

Hastelloy B-2 is the low-carbon, low-iron variant of Hastelloy B with significantly improved resistance to knife-line attack and heat-affected zone corrosion after welding. It retains the exceptional hydrochloric acid resistance of the B family while eliminating the need for post-weld solution heat treatment in many applications.

## Key features

- Improved weld zone corrosion resistance
- No post-weld heat treat needed
- Same HCl resistance as Hastelloy B
- Low carbon < 0.02%
- ASME pressure vessel qualified

## Applications

- HCl distillation columns
- Acetic acid production
- Ethyl benzene alkylation
- Pharmaceutical reactors
- High-purity acid handling

## Standards

- ASTM B333
- ASTM B335
- ASTM B366
- ASME SB-333