Common Trade Names: Hastelloy B3; Alloy B3;

HASTELLOY B-3 alloy (UNS N10675) is an excellent resistance alloy to hydrochloric acid at all concentrations and temperatures. It also withstands sulfuric, acetic, formic and phosphoric acids, and other nonoxidizing media. B-3 alloy has a special chemistry designed to achieve a level of thermal stability greatly superior to that of its predecessors, e.g. HASTELLOY B-2 alloy. B-3 alloy has excellent resistance to pitting corrosion, to stress-corrosion cracking and to knife-line and heat-affected zone attack.

Available Product Forms: 
HASTELLOY B-3 alloy is available in the form of plate, sheet, strip, billet, bar, wire, pipe and tubing.

Specifications
Hastelloy B-3 is covered by the following specifications:

UNS N10675

Plate, Sheet, Strip: ASTM B333, ASME SB333,

Bar: ASTM B 335, ASME SB335, (DUAL CERTIFIED TO ASTM B564, ASME SB564 ON 3-1/2 DIA. AND UP)

Welded Pipe: ASTM B619, ASME SB619, CLASS I or II, (ABOVE 8 SCH 40) ASTM
B775, ASME SB775,

Seamless Pipe: ASTM B622, ASME SB622

Trademark Notice: Some names are trade names and/or trademarks of specific manufacturers. American Special Metals, Corp. is not affiliated with any manufacturer(s). Orders will be filled to meet specifications from any available source(s). Names are listed solely for reference to help identify products consistent with listed specifications.

Hastelloy B3 Alloy is a Registered Trademark of Haynes International and Its subsidiaries.

Chemical Composition 
Limiting Chemical Composition, % 

Ni……………..56
Co……………2.5
Cr……………..22
Mo……………13
W………………3
Fe……………..3 
Si……….….0.08 Max
Mn…………0.50 Max
C………….0.010 Max
V……………0.35 Max