Nickel Alloy Alloy 22 vs Hastelloy W
Nickel Alloy · grade comparison
Nickel Alloy Alloy 22 and Hastelloy W are both nickel alloy grades. Hastelloy W is the stronger of the two: tensile strength 855 MPa (124 ksi) against 800 MPa (116 ksi) for Alloy 22, about 7% more. In exchange, Alloy 22 is the more ductile: elongation 62% versus 45% for Hastelloy W. Alloy 22 is lighter (8.69 g/cm³ vs 9.03 g/cm³ for Hastelloy W) and Hastelloy W runs hotter in service (760°C vs 675°C continuous).
Alloy 22Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
Hastelloy WChoose it when strength drives the design, or when the part sees heat.
Alloy 22 vs Hastelloy W: 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
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Yield Strength (0.2% offset) 400 MPa58 ksi
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Min Service Temperature -196°C-321 °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
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 3
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 | Alloy 22 | Hastelloy W |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
Alloy 22 vs Hastelloy W — frequently asked
Is Hastelloy W stronger than Alloy 22?
Yes. Hastelloy W has a typical tensile strength of 855 MPa (124 ksi) against 800 MPa (116 ksi) for Alloy 22 — about 7% more.
Which is cheaper, Alloy 22 or Hastelloy W?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Alloy 22 or Hastelloy W?
Hastelloy W, by a small margin. Both rate poor for machinability — 20/100 against 15/100 for Alloy 22; for welding the order is Alloy 22 first (excellent, 85/100) then Hastelloy W (very good, 80/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Alloy 22 and Hastelloy W 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.