Nickel Alloy Alloy 22 vs Hastelloy C-4
Nickel Alloy · grade comparison
Nickel Alloy Alloy 22 and Hastelloy C-4 are both nickel alloy grades. Both yield at about 400 MPa — strength does not separate them. Alloy 22 is the more ductile: elongation 62% versus 55% for Hastelloy C-4. Hastelloy C-4 runs hotter in service (1,000°C vs 675°C continuous).
Alloy 22Choose it when the part is bent, formed or impact-loaded.
Hastelloy C-4Choose it when the part sees heat.
Alloy 22 vs Hastelloy C-4: 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
Compressive Strength
Shear Strength
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Yield Strength (0.2% offset) 400 MPa58 ksi · Reduction in Area 65% · Fatigue Strength (Endurance Limit) 340 MPa49.3 ksi · Charpy V-Notch Impact (RT) 250 J184 ft·lbf
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 10.1 W/m·K5.8 BTU/hr·ft·°F · Latent Heat of Fusion 285 J/g123 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.08 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Weldability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 40%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Same in both: Thermal Diffusivity 2.8 mm²/s · 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 C-4 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
Alloy 22 vs Hastelloy C-4 — frequently asked
What is the difference between Alloy 22 and Hastelloy C-4?
Nickel Alloy Alloy 22 and Hastelloy C-4 are both nickel alloy grades. Both yield at about 400 MPa — strength does not separate them. Alloy 22 is the more ductile: elongation 62% versus 55% for Hastelloy C-4.
Which is cheaper, Alloy 22 or Hastelloy C-4?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose Alloy 22 over Hastelloy C-4?
Pick Alloy 22 when the part is bent, formed or impact-loaded. Pick Hastelloy C-4 when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Alloy 22 and Hastelloy C-4 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.