Hastelloy B3 Alloy Introduction to Characteristics and Execution Standards

Hastelloy B3 Alloy Introduction to Characteristics and Execution Standards

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;

Hastelloy B3 Alloy Chemical Composition

Limiting Chemical Composition, % 

Ni……………..65 Min.

Mo……………28.5.

Cr……………..1.5.

Fe……………..1.5.

W………………3 Max.

Mn……………..3 Max.

Co…..…………3 Max.

Al………………0.5 Max.

Ti……………….0.2 Max.

Si……………….0.1 Max.

C………………..0.01 Max.

V………………..0.2 Max. 

Cu………………0.2 Max.

Ta……………….0.2 Max. 

Zr……………….0.01 Max.