Hangbo Alloy Group
Shanghai · Est. 2012
N02211 technical guide: nominal chemical composition, mechanical and physical properties, corrosion resistance, welding, product forms and ASTM standards...
Nickel 211 (UNS N02211) is a nickel-manganese alloy (resistance alloy). Nickel + 4–5.5 % Mn for strength & stable resistivity. Pure-nickel corrosion resistance retained. 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 Nickel 211 for a project.
Nickel 211 belongs to the nickel-manganese alloy (resistance alloy) class of materials. It is nickel + 4–5.5 % mn for strength & stable resistivity. It is pure-nickel corrosion resistance retained. It is used for resistance/heating hardware.
Nominal (wt%) composition of Nickel 211 (UNS N02211):
| Element | Composition (wt%) |
|---|---|
| Nickel (Ni) | 93.0 min |
| Manganese (Mn) | 4.0 – 5.5 |
| Carbon (C) | ≤ 0.15 |
| Iron (Fe) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.10 |
| Copper (Cu) | ≤ 0.10 |
| Sulphur (S) | ≤ 0.01 |
| Magnesium (Mg) | ≤ 0.05 |
| Cobalt (Co) | ≤ 0.10 |
Typical physical properties:
| Property | Value |
|---|---|
| Density | 8.85 g/cm³ |
| Melting Range | 1400 – 1450 °C |
| Thermal Expansion (20–300 °C) | 13.3 µm/m·K |
| Thermal Conductivity (100 °C) | 40.0 W/m·K |
| Electrical Resistivity | 0.20 µΩ·m |
| Modulus of Elasticity | 200 GPa |
Typical room-temperature mechanical properties (annealed / specified condition unless noted):
| Property | Typical Value |
|---|---|
| Tensile Strength (Rm) | 480 MPa (70 ksi) |
| Yield Strength, 0.2% (Rp0.2) | 200 MPa (29 ksi) |
| Elongation in 50 mm | 35% |
| Hardness (Rockwell B) | 65 – 80 HRB |
| Property | Value |
|---|---|
| Resistivity | ≈ 0.20 µΩ·m (stable) |
| Service temperature | Cryogenic to ≈ 400 °C |
211 is a nickel-manganese alloy whose manganese addition raises strength and gives a stable, moderate electrical resistivity. It keeps good pure-nickel corrosion resistance and is used where a combination of strength, conductivity control and caustic resistance is needed.
Welded with ERNi-1 or matching fillers by GTAW/GMAW. The manganese stays in solution; standard nickel welding practice applies.
The grade is supplied to the following common specifications:
| Standard | Product Form / Scope |
|---|---|
| ASTM B160 | Bar & rod |
| ASTM B162 | Plate, sheet & strip |
| ASTM B161 | Seamless pipe & tube |
211 is a nickel-manganese alloy (93 % Ni min, 4–5.5 % Mn) whose manganese raises strength and gives a stable, moderate electrical resistivity, while keeping pure-nickel corrosion resistance.
Annealed: ≈ 480 MPa tensile, ≈ 200 MPa yield, 35 % elongation, 65–80 HRB, with resistivity around 0.20 µΩ·m.
Resistance wire and heating-element hardware, caustic equipment needing extra strength, battery/electrical contacts, cathodic-protection anodes and electronic lead frames.
Yes, with ERNi-1 or matching fillers by GTAW/GMAW; standard nickel welding practice applies.
211 adds 4–5.5 % manganese for higher strength and controlled resistivity; 200 is unalloyed pure nickel. Both resist caustic alkalis well.
Bar/rod ASTM B160, plate/sheet/strip ASTM B162, seamless pipe/tube ASTM B161.
As a dedicated nickel alloy manufacturer serving chemical processing, power generation, aerospace 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. Contact us for a quote on this grade in your required product form.