Nickel Alloy Hastelloy C276 vs Hastelloy G-3
Nickel Alloy · grade comparison
Nickel Alloy Hastelloy C276 and Hastelloy G-3 are both nickel alloy grades. Hastelloy C276 is the stronger of the two: yield strength 360 MPa (52.2 ksi) against 310 MPa (45 ksi) for Hastelloy G-3, about 16% more; tensile strength follows at 790 MPa (115 ksi) vs 690 MPa (100 ksi). Hastelloy C276 is the more ductile: elongation 60% versus 50% for Hastelloy G-3. Hastelloy G-3 is lighter (8.31 g/cm³ vs 8.89 g/cm³ for Hastelloy C276) and Hastelloy G-3 conducts electricity better (1.5 % IACS vs 1.3 % IACS). On the shop floor, Hastelloy C276 sits in a lower cost tier (premium, $$$) than Hastelloy G-3 (high, $$$$).
Hastelloy C276Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Hastelloy G-3Choose it when weight is the constraint.
Hastelloy C276 vs Hastelloy G-3: 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 B
Hardness, Vickers
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)
Same in both: Thermal Conductivity 10.2 W/m·K5.9 BTU/hr·ft·°F · Latent Heat of Fusion 290 J/g125 BTU/lb · Max Service Temperature (continuous) 650°C1,202 °F · 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
Machinability Rating (AISI 1212 = 100 %)
Castability
Brazeability / Solderability
Polishability
Same in both: Weldability 85 / 100 · Formability (cold) 75 / 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)
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 | Hastelloy C276 | Hastelloy G-3 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | Solution Annealed | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | 1.5 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Electropolishing | Yes | — |
| HVOF Coating | Yes | — |
They share 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
Hastelloy C276 vs Hastelloy G-3 — frequently asked
Is Hastelloy C276 stronger than Hastelloy G-3?
Yes. Hastelloy C276 has a typical yield strength of 360 MPa (52.2 ksi) against 310 MPa (45 ksi) for Hastelloy G-3 — about 16% more. Tensile strength is 790 MPa (115 ksi) vs 690 MPa (100 ksi).
Which is cheaper, Hastelloy C276 or Hastelloy G-3?
Hastelloy C276 is the lower-cost material: it sits in the premium tier ($$$) while Hastelloy G-3 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 is easier to machine, Hastelloy C276 or Hastelloy G-3?
Hastelloy G-3, by a small margin. Both rate poor for machinability — 25/100 against 18/100 for Hastelloy C276.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Hastelloy C276 and Hastelloy G-3 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.