Nickel 201 vs Nickel 205
Nickel Alloy · grade comparison
Nickel 201 and Nickel 205 are both nickel alloy grades. Nickel 205 is the stronger of the two: yield strength 145 MPa (21 ksi) against 105 MPa (15.2 ksi) for Nickel 201, about 38% more; tensile strength follows at 440 MPa (63.8 ksi) vs 415 MPa (60.2 ksi). Nickel 205 is harder — 95 HB against 90 HB for Nickel 201 — which matters for wear surfaces and threads. Nickel 201 runs hotter in service (650°C vs 315°C continuous) and Nickel 201 conducts heat better (79 W/m·K vs 70 W/m·K).
Nickel 201Choose it when the part sees heat.
Nickel 205Choose it when strength drives the design, or when surface hardness matters.
Nickel 201 vs Nickel 205: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all nickel alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all nickel alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Same in both: Bulk Modulus 180 GPa26.1 Msi · Poisson's Ratio 0.31 · Reduction in Area 70% · Hardness, Vickers 100 HV
Physical
Density and transition temperatures.
Same in both: Density 8.89 g/cm³0.32 lb/in³ · Melting Point (Solidus) 1,435°C2,615 °F · Liquidus Temperature 1,446°C2,635 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 456 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 13.3 µm/m·K7.4 µin/in·°F · Latent Heat of Fusion 297 J/g128 BTU/lb · Min Service Temperature -250°C-418 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Brazeability / Solderability
Castability
Same in both: Formability (cold) 92 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 165 MJ/kg70,937 BTU/lb
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every nickel alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Nickel 201 | Nickel 205 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
Nickel 201 vs Nickel 205 — frequently asked
Is Nickel 205 stronger than Nickel 201?
Yes. Nickel 205 has a typical yield strength of 145 MPa (21 ksi) against 105 MPa (15.2 ksi) for Nickel 201 — about 38% more. Tensile strength is 440 MPa (63.8 ksi) vs 415 MPa (60.2 ksi).
Which is cheaper, Nickel 201 or Nickel 205?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Nickel 201 or Nickel 205?
Nickel 201. Its weldability rates excellent (85/100) against very good (80/100) for Nickel 205.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Nickel 201 and Nickel 205 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.