Introduction

Hastelloy B-3 is a nickel-molybdenum  alloy with excellent resistance to pitting, corrosion, and stress-corrosion  cracking plus, thermal stability superior to that of alloy B-2. In addition,  this nickel steel alloy has great resistance to knife-line and heat–affected  zone attack. Alloy B-3 also withstands sulfuric, acetic, formic and  phosphoric acids, and other non-oxidizing media. Furthermore, this nickel  alloy has excellent resistance to hydrochloric acid at all concentrations and  temperatures. Hastelloy B-3’s distinguishing feature is its ability to  maintain excellent ductility during transient exposures to intermediate  temperatures. Such exposures are routinely experienced during heat treatments  associated with fabrication.

Characters

l    Maintains excellent ductility during transient  exposures to intermediate temperatures

l    Excellent resistance to pitting, corrosion and  stress-corrosion cracking

l    Excellent resistance to knife-line and heat-affected  zone attack

l    Excellent resistance to acetic, formic and phosphoric  acids and other non-oxidizing media

l    Resistance to hydrochloric acid at all concentrations  and temperatures

l    Thermal stability superior to alloy B-2

Application

l    Chemical processes

l    Vacuum furnaces

l    Mechanical components in reducing environments

Equal grades

UNS N10675，NS3203，NS323，Nimofer 6928

Chemical composition  (%)

Ni≥65，Mo=27-32，Co≤3，Mn≤3，W≤3，Fe=1-3，Cr=1-3，Al≤0.5，Cu≤0.2，Nb≤0.2，Ta≤0.2，Ti≤       0.2，V≤0.2，Zr≤0.1，P≤0.03，S≤0.01，C≤0.01

Standards

Forms available

Bar, plate, strip, forging, seamless  pipe, welded pipe

Delivery

Hastelloy B3 bar could be delivered  within 2 weeks. The delivery of other products is available per request.