Material Grade: HastelloyB Hastelloy
United States UNS grade: N10001
Overview of Hastelloy B Hastelloy
Hastelloy B is a nickel-based high-temperature alloy composed of nickel, molybdenum, cobalt and other elements. The nickel content of Hastelloy B is about 62%. Hastelloy B is widely used in chemical industry, petrochemical, energy manufacturing and pollution control fields, especially in industries such as sulfuric acid, hydrochloric acid, phosphoric acid, and acetic acid.
Chemical composition of Hastelloy B
| C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
| 0.01 | 0.70 | 0.80 | 0.035 | 0.030 | 0.60 | Remain | 28.0 | - |
| other | N≤ | Al≤ | Ti≤ | Fe≤ | Co≤ | V≤ | W≤ | Nb≤ |
| - | - | - | 5.50 | - | 0.30 | - | - |
Physical properties of Hastelloy: density 9.24g/cm³, melting point 1330-1380℃.
Mechanical properties of Hastelloy B
The tensile strength of Hastelloy B is Rmn/mm2≥690.
The yield strength of Hastelloy B is rp0.2n/mm2≥310.
The elongation of Hastelloy B: a5%≥40.
Hastelloy B has the following characteristics
By controlling the upper content of Fe and Cr, the formation of ni4mo in the beta phase can be prevented.
It has excellent corrosion resistance to reducing environments.
It has good tolerance to moderate concentrations of sulfuric acid and many non-oxidizing acids.
Good resistance to chloride reduction stress corrosion cracking (SCC).
Excellent resistance to corrosion of various organic acids.
Metallographic structure of Hastelloy B
Hastelloy B has a face-centered cubic lattice structure. At 700 to 870°C, by controlling the Fe and Cr content, the processing brittleness is reduced and the precipitation of the ni4mo phase is prevented.
Corrosion resistance of Hastelloy B
The carbon and silicon content of Hastelloy B is very low, reducing the precipitation of carbon and other impurities in HAZ. Therefore, the weld of Hastelloy B has sufficient corrosion resistance. Hastelloy B-2 has good corrosion resistance in reducing media such as hydrochloric acid solutions at different temperatures and concentrations. It also has good corrosion resistance in medium-concentration sulfuric acid solution (or contains a certain amount of chloride ions). It can also be used in acetic and phosphoric acid environments. Only in pure state can the corrosion resistance of the alloy reach ***.
Hastelloy B can be used in the following fields
Hastelloy B is widely used in chemical industry, petrochemical, energy manufacturing and pollution control fields, especially in industries such as sulfuric acid, hydrochloric acid, phosphoric acid, and acetic acid.
Specifications and availability of Hastelloy B
1 variety classification: Danyang Xinmao Alloy can produce Hastelloy B seamless pipes, Hastelloy B steel plates, Hastelloy B round steel, Hastelloy B forgings, Hastelloy B flanges, Hastelloy B rings, Hastelloy B welded pipes, Hastelloy B steel strips, Hastelloy B wires and Hastelloy B matching welding materials.
2 Delivery status: Seamless steel pipe: solution + acidic white, length can be fixed; plate: solid solution, pickling, trimming; welded pipe: solid solution acidic white + RT% flaw detection, forging: annealing + turning; bar forging, surface polishing or turning polishing; strip steel cold rolling, solution softening, scale removal; wire solution delivery pickling board or straight strip, solid solution straight strip polishing state.