Hastelloy B2
Hastelloy B2 is a nickel based corrosion resistant alloy containing about 65% nickel and 26% to 30% molybdenum, with carbon limited to ≤0.01%. Its single phase austenitic structure provides resistance to reducing acids, including hydrochloric and sulfuric acid, and to sulfur bearing media. The source states stable mechanical performance from -196℃ to 400℃. Typical equipment includes reactors, evaporators, piping, and agitators handling hydrochloric acid, sulfuric acid, or formic acid. B2 is less resistant to oxidizing media such as nitric acid, so material selection must follow the service environment.
Product details
Chemical composition
| HastelloyB2 | C | Si | Mn | P | S | Fe | Ni | Cr | Mo | Co |
|---|---|---|---|---|---|---|---|---|---|---|
| min | – | – | – | – | – | – | – | – | 26.0 | – |
| max | 0.02 | 0.1 | 1.0 | 0.04 | 0.03 | 2.0 | Bal | 1.0 | 30.0 | 1.0 |
Grade equivalents
| UNS | W.Nr. | JIS | GB/T | Other Grades |
|---|---|---|---|---|
| N10665 | 2.4617 Nimofer 6928 | NW0665 | NS322 NS3202 | NiMo28 65Ni-28Mo-2Fe |
Physical properties
| Density g/cm³ | 9.2 |
|---|---|
| Melting range ℃ | 1330~1380 |
| Thermal conductivity (100℃) λ/(W/m•℃) | 11.1 |
| Specific heat J/kg•℃ | 407 |
| Elastic modulus GPa | 208 |
| Electrical resistivity μΩ•m | 1.25 |
| Linear expansion coefficient a/10-6℃-1 | 10.3 (20~100℃) |
Mechanical properties
| Tensile strength Rm N/mm | ≥690 |
|---|---|
| Yield strength RP0.2 N/mm | ≥ 310 |
| Elongation % | ≥30 |
| Hardness HB | 210-250 HB |
| *After solution heat treatment | |
Available product forms
- Round Bar
- Plate
- Pipe & Tube
- Welding Consumables
- Flanges
- Hex Bolts
- Threaded Rod
- Nuts & Washers
Technical values are transcribed and translated from the supplied Milike Chinese catalogue. Confirm the applicable purchase specification, heat treatment condition, and inspection requirements before final material selection.
Need a different size, condition, or inspection route?
Send the grade, standard, product form, quantity, dimensions, heat treatment condition, and required documents.