Nickel Alloy Inconel 718 vs Nickel 270
Nickel Alloy · grade comparison
Nickel Alloy Inconel 718 and Nickel 270 are both nickel alloy grades. Inconel 718 is the stronger of the two: yield strength 550 MPa (79.8 ksi) against 105 MPa (15.2 ksi) for Nickel 270, about 5.2 times as much; tensile strength follows at 965 MPa (140 ksi) vs 345 MPa (50 ksi). In exchange, Nickel 270 is the more ductile: elongation 50% versus 45% for Inconel 718, and Inconel 718 is harder (200 HB vs 45 HB). Inconel 718 is lighter (8.19 g/cm³ vs 8.89 g/cm³ for Nickel 270) and Nickel 270 runs hotter in service (600°C vs 540°C continuous). On the shop floor, Nickel 270 welds better (excellent vs very good) and Inconel 718 sits in a lower cost tier (premium, $$$) than Nickel 270 (high, $$$$).
Inconel 718Choose it when strength drives the design, or when weight is the constraint.
Nickel 270Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Inconel 718 vs Nickel 270: 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.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
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 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
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 | Inconel 718 | Nickel 270 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| 3D printing | Yes | — |
| Default condition | Solution Annealed | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | 1.5 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Electropolishing | Yes | — |
| HVOF Coating | Yes | — |
They share 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
Inconel 718 vs Nickel 270 — frequently asked
Is Inconel 718 stronger than Nickel 270?
Yes. Inconel 718 has a typical yield strength of 550 MPa (79.8 ksi) against 105 MPa (15.2 ksi) for Nickel 270 — about 5.2 times as much. Tensile strength is 965 MPa (140 ksi) vs 345 MPa (50 ksi).
Which is cheaper, Inconel 718 or Nickel 270?
Inconel 718 is the lower-cost material: it sits in the premium tier ($$$) while Nickel 270 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, Inconel 718 or Nickel 270?
Nickel 270. Its weldability rates excellent (85/100) against very good (70/100) for Inconel 718.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Inconel 718 and Nickel 270 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.