Nickel Alloy Hastelloy C276 vs Hastelloy X
Nickel Alloy · grade comparison
Nickel Alloy Hastelloy C276 and Hastelloy X are both nickel alloy grades. Both yield at about 360 MPa — strength does not separate them. Hastelloy C276 is the more ductile: elongation 60% versus 43% for Hastelloy X. Hastelloy X is lighter (8.22 g/cm³ vs 8.89 g/cm³ for Hastelloy C276) and Hastelloy X runs hotter in service (1,150°C vs 650°C continuous).
Hastelloy C276Choose it when the part is bent, formed or impact-loaded.
Hastelloy XChoose it when weight is the constraint, or when the part sees heat.
Hastelloy C276 vs Hastelloy X: 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.
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Compressive Strength
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 79 GPa11.5 Msi · Yield Strength (0.2% offset) 360 MPa52.2 ksi · Hardness, Rockwell B 90 HRB
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)
Max Service Temperature (continuous)
Same in both: Latent Heat of Fusion 290 J/g125 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).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Same in both: Machinability 18 / 100 · Machinability Rating (AISI 1212 = 100 %) 12% · Weldability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Embodied Water
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Modulus of Resilience 316 kJ/m³
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 | Hastelloy C276 | Hastelloy X |
|---|---|---|
| 3D printing | — | Yes |
| Default condition | Solution Annealed | Solution Annealed |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | 1.5 mm | 1.5 mm |
| Best machined surface | Ra 1.6 µm | Ra 1.6 µm |
Both are offered for CNC machining and Sheet metal. Both take the same 5 finishes: Electropolishing, Gold Plating, HVOF Coating, Plasma Spray, Silver Plating.
Hastelloy C276 vs Hastelloy X — frequently asked
What is the difference between Hastelloy C276 and Hastelloy X?
Nickel Alloy Hastelloy C276 and Hastelloy X are both nickel alloy grades. Both yield at about 360 MPa — strength does not separate them. Hastelloy C276 is the more ductile: elongation 60% versus 43% for Hastelloy X.
Which is cheaper, Hastelloy C276 or Hastelloy X?
Both sit in the same relative cost tier ($$$, premium); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose Hastelloy C276 over Hastelloy X?
Pick Hastelloy C276 when the part is bent, formed or impact-loaded. Pick Hastelloy X when weight is the constraint, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Hastelloy C276 and Hastelloy X 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.