Hangbo Alloy Group
Shanghai · Est. 2012
N10610 technical guide: nominal chemical composition, mechanical and physical properties, corrosion resistance, welding, product forms and ASTM standards...
Hastelloy B-10 (UNS N10610) is a low-carbon nickel-molybdenum alloy. Ultra-low-carbon Ni-Mo (≤ 0.01 % C). Weldable without HAZ sensitisation. This guide covers its nominal chemical composition, typical mechanical and physical properties, corrosion behaviour, welding, common applications, available product forms and the ASTM standards that apply — everything a specifier needs to evaluate Hastelloy B-10 for a project.
Hastelloy B-10 belongs to the low-carbon nickel-molybdenum alloy class of materials. It is ultra-low-carbon ni-mo (≤ 0.01 % c). It is weldable without haz sensitisation. It is excellent hydrochloric acid resistance.
Nominal (wt%) composition of Hastelloy B-10 (UNS N10610):
| Element | Composition (wt%) |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 27.0 – 32.0 |
| Iron (Fe) | 2.0 – 7.0 |
| Chromium (Cr) | ≤ 1.0 |
| Carbon (C) | ≤ 0.01 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.10 |
| Cobalt (Co) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.020 |
| Sulphur (S) | ≤ 0.010 |
Typical physical properties:
| Property | Value |
|---|---|
| Density | 9.20 g/cm³ |
| Melting Range | 1320 – 1380 °C |
| Thermal Expansion (20–1000 °C) | 11.0 µm/m·K |
| Thermal Conductivity (100 °C) | 12.0 W/m·K |
| Electrical Resistivity | 1.30 µΩ·m |
| Modulus of Elasticity | 211 GPa |
Typical room-temperature mechanical properties (annealed / specified condition unless noted):
| Property | Typical Value |
|---|---|
| Tensile Strength (Rm) | 800 MPa (116 ksi) |
| Yield Strength, 0.2% (Rp0.2) | 400 MPa (58 ksi) |
| Elongation in 50 mm | 40% |
| Hardness (Rockwell B) | 85 – 100 HRB |
| Property | Value |
|---|---|
| Service temperature | Up to ≈ 650 °C (non-oxidising) |
| Service note | Ultra-low carbon for clean HAZ |
B-10 is a low-carbon evolution of the Ni-Mo family with carbon held to ≤ 0.01 % so the heat-affected zone stays immune to sensitisation and intergranular corrosion after welding. It keeps the exceptional hydrochloric-acid resistance of the B-type alloys while being far more fabrication-friendly than the older B or W grades.
Welded with matching ERNiMo-10 fillers; the ultra-low carbon avoids HAZ sensitisation, so post-weld heat treatment is not required for corrosion service. As with all B-types, avoid oxidising environments.
The grade is supplied to the following common specifications:
| Standard | Product Form / Scope |
|---|---|
| ASTM B333 | Plate, sheet & strip |
| ASTM B335 | Bar |
| ASTM B619/B622 | Pipe/tube |
| ASTM B366 | Fittings |
B-10 (UNS N10610) is a low-carbon Ni-Mo alloy with carbon ≤ 0.01 % so the weld HAZ stays immune to sensitisation and intergranular corrosion. It keeps the B-family's exceptional hydrochloric-acid resistance while being much easier to fabricate than older B/W grades.
Annealed: ≈ 800 MPa tensile, ≈ 400 MPa yield, 40 % elongation, 85–100 HRB.
The ultra-low carbon prevents precipitation of carbides in the HAZ during welding, eliminating the need for post-weld heat treatment to restore corrosion resistance – a major improvement over older B-type alloys.
Yes, with matching ERNiMo-10 fillers; no post-weld heat treatment is needed for corrosion service. Avoid oxidising environments as with all B-types.
Hydrochloric acid handling/storage, welded HCl vessels and columns, non-oxidising sulphuric/phosphoric acid equipment and acid-etching tanks.
Plate/sheet/strip ASTM B333, bar ASTM B335, pipe/tube ASTM B619/B622, fittings ASTM B366.
As a dedicated nickel alloy manufacturer serving chemical processing, oil & gas sectors, Hangbo Alloy Group supplies the grades discussed here across all standard product forms with full ASTM/ASME documentation and EN 10204 3.1 certification. Our material is specified for applications where corrosion resistance, high-temperature strength, and traceable quality are non-negotiable. See our production & testing facilities for more on how every heat is verified.