Nickel Alloy 925 vs Hastelloy C276
Nickel Alloy · grade comparison
Nickel Alloy 925 and Hastelloy C276 are both nickel alloy grades. 925 is the stronger of the two: yield strength 830 MPa (120 ksi) against 360 MPa (52.2 ksi) for Hastelloy C276, about 131% more; tensile strength follows at 1,210 MPa (175 ksi) vs 790 MPa (115 ksi). In exchange, Hastelloy C276 is the more ductile: elongation 60% versus 25% for 925, and 925 is harder (320 HB vs 194 HB). 925 is lighter (8.08 g/cm³ vs 8.89 g/cm³ for Hastelloy C276) and Hastelloy C276 runs hotter in service (650°C vs 540°C continuous). On the shop floor, Hastelloy C276 welds better (excellent vs good) and Hastelloy C276 sits in a lower cost tier (premium, $$$) than 925 (high, $$$$).
925Choose it when strength drives the design, or when weight is the constraint.
Hastelloy C276Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
925 vs Hastelloy C276: 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)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
Hardness, Vickers
Hardness, Rockwell B
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)
Min Service Temperature
Same in both: Latent Heat of Fusion 290 J/g125 BTU/lb
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.
Weldability
Formability (cold)
Brazeability / Solderability
Castability
Same in both: Machinability 18 / 100 · 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
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 | 925 | Hastelloy C276 |
|---|---|---|
| CNC machining | — | Yes |
| Sheet metal | — | Yes |
| Default condition | — | Solution Annealed |
| Relative cost | $$$$ High | $$$ Premium |
| Min. machined wall | — | 1.5 mm |
| Best machined surface | — | Ra 1.6 µm |
| Electropolishing | — | Yes |
| HVOF Coating | — | Yes |
They share 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
925 vs Hastelloy C276 — frequently asked
Is 925 stronger than Hastelloy C276?
Yes. 925 has a typical yield strength of 830 MPa (120 ksi) against 360 MPa (52.2 ksi) for Hastelloy C276 — about 131% more. Tensile strength is 1,210 MPa (175 ksi) vs 790 MPa (115 ksi).
Which is cheaper, 925 or Hastelloy C276?
Hastelloy C276 is the lower-cost material: it sits in the premium tier ($$$) while 925 is high ($$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which welds better, 925 or Hastelloy C276?
Hastelloy C276. Its weldability rates excellent (85/100) against good (55/100) for 925.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 925 and Hastelloy C276 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.