B-3® Alloy
UNS N10665
Trade Name: Hastelloy®
HASTELLOY® B-3® alloy is an additional member of the nickel-molybdenum family of alloys with excellent resistance 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. (Information provided by Haynes International, Inc.)
| ASME Boiler and Pressure Vessel Specifications | |||||||
| Sheet/ Plate | Forgings | Weld Fittings | Rod and Bar | Tubing - Welded/ Smls | Pipe - Welded/ Smls | Bolting- Bolts/ Nuts | Filler Metals |
| SB333 | NA | SB366 | SB335 | SB626/ SB622 | SB619/ SB622 | SB355-"B"/ SB355-"B" | ERNiMo-7 |
| ASME Boiler and Pressure Vessel Chemical Requirements for Sheet/Plate | |||||||||
| Note: all percentages max unless otherwise specified | |||||||||
| Ni | Mo | Fe | Cr | C | Si | Co | Mn | P | S |
| Rem | 26.0-30.0 | 2.0 | 1.0 | 0.02 | 0.10 | 1.00 | 1.00 | 0.04 | 0.03 |
| ASME Boiler and Pressure Vessel Mechanical Properties for Sheet/Plate | |||
| Tensile Strength, Min ksi | Yield Strength, (0.2% offset), Min, ksi | Min. Elongation in 2", % | Density lb/in³ |
| 110 | 51 | 40.0 | 0.333 |
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