ALLOY B2 （Hastelloy B2）
Characteristics
ALLOY B2 is a corrosion-resistant, solid-solution Ni-Mo alloy.
- controlled chemistry with a minimum iron and chromium content to retard the formation of ordered -phase Ni4Mo
- significant corrosion resistance to reducing environments
- excellent resistance to medium-concentrated sulphuric acid and a number of non-oxidizing acids
- good resistance to chloride-induced stress-corrosion cracking (SCC)
- good resistance to a wide range of organic acids
Stock Form and Sizes
※ ◆1000㎜ ◎2000㎜ ▲3000㎜ ■3500㎜ ●4000㎜ ★2500㎜～3990㎜
Round barsSpecification: ASTM B335/B564※ ASME SB335/SB564※ ※B564/SB564 Apply to Forged Bar Only
| size １〜13 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.2 | 1.6 | 2 | 2.6 | 3 | 3.5 | 4 | 4.4 | 5 | 5.3 | 6 | 7.1 | 8 | 8.95 | 10 | 12 | 13 |
| ★ | ★ | |||||||||||||||
| size 16〜50 | ||||||||||||||||
| 16 | 18 | 19 | 20 | 22 | 24 | 25 | 28 | 30 | 32 | 35 | 36 | 38 | 40 | 42 | 45 | 50 |
| ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ||||||
| size 55〜135 | ||||||||||||||||
| 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 133 | 135 |
| ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | |||||||
| size 140〜330 | ||||||||||||||||
| 140 | 145 | 150 | 155 | 160 | 165 | 170 | 180 | 190 | 200 | 210 | 220 | 230 | 250 | 280 | 300 | 330 |
| ★ | ★ | ★ | ★ | ★ | ★ | |||||||||||
| size 350 | ||||||||||||||||
Sourceable Ex-Stock Material for other Forms from Distributors World-Wide
| Equivalent | Round Bars | Plate | Pipe/Tube | Welding Rod & Wire | ||
|---|---|---|---|---|---|---|
| Min | Max | Min | Max | |||
| HastelloyB2/B3 | 10~203.2 | 0.53~31.8 | × | △ | ||
*○: Various sizes available in stock. △: Only limited sizes available in stock. ☆: Please contact us for more details.
*We can supply materials and products that comply with various standards including ASTM, ASME, AMS, and NACE standards. Please contact us for more details.
Corrosion resistance
The extremely low carbon and silicon content of Alloy B2 reduces precipitation of carbides and other phases in the heat-affected zone of welds and ensures adequate corrosion resistance even in the welded condition.
Alloy B2 exhibits excellent corrosion resistance in aggressive reducing media such as hydrochloric acid in a wide range of temperatures and concentrations, as well as in medium-concentrated sulphuric acid even with limited chloride contamination. It can also be used in acetic and phosphoric acids. Optimum corrosion resistance can be obtained only if the material is in the correct metallurgical condition and exibits a clean structure.
Applications
ALLOYB2is used in a wide range of applications in the chemical process industry, especially for processes involving sulphuric, hydrochloric, phosphoric and acetic acid.
Chemical composition
| Ni | Cr | Fe | C | Mn | Si | Cu | Mo | Co | P | S | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| min | bal. | 0.4 | 1.6 | 26.0 | |||||||
| max | 1.0 | 2.0 | 0.01 | 1.0 | 0.08 | 0.5 | 30.0 | 1.0 | 0.02 | 0.010 |
※The values in the table are for reference only and do not guarantee minimum or maximum values. For further information, please contact us.
Mechanical properties（Round Bar）
| Condition | Yield Strength(Mpa) | Tensile Strength(Mpa) | Elongation(%) | Hardness(HB) | |
|---|---|---|---|---|---|
| ASTM Min Value | Solution Annealed | 350 | 760 | 40 | |
| Typical Values at RT | Solution Annealed | 411 | 892 | 60 | 185 |
Above standard values and typical values of Round Bar.
Please contact us with any questions about reference or value of plate and pipe.
※The values in the table are for reference only and do not guarantee minimum or maximum values. For further information, please contact us.
International Standard Comparison Chart
| Material | Round Bars | Plates/Sheets | Pipe/Tube | ||
|---|---|---|---|---|---|
| Seamless | Welded | ||||
| ASTM | UNS N10665 |
B335 | B333 | B622 | B619/B626 |
| ASME | SB335 | SB333 | SB622 | SB619/SB626 | |
| JIS | NW0665 | H4553 | H4551 | H4552 | |
| DIN | 2.4617 | 17752 | 17750 | 17751 | 17751 |