Nickel Alloy Waspaloy vs X-750
Nickel Alloy · grade comparison
Nickel Alloy Waspaloy and X-750 are both nickel alloy grades. X-750 is the stronger of the two: yield strength 815 MPa (118 ksi) against 520 MPa (75.4 ksi) for Waspaloy, about 57% more; tensile strength follows at 1,200 MPa (174 ksi) vs 930 MPa (135 ksi). In exchange, Waspaloy is the more ductile: elongation 45% versus 24% for X-750, and X-750 is harder (302 HB vs 250 HB). X-750 runs hotter in service (760°C vs 650°C continuous) and X-750 conducts heat better (12 W/m·K vs 10.7 W/m·K). On the shop floor, Waspaloy sits in a lower cost tier (premium, $$$) than X-750 (high, $$$$).
WaspaloyChoose it when the part is bent, formed or impact-loaded, or when cost is the deciding factor.
X-750Choose it when strength drives the design, or when the part sees heat.
Waspaloy vs X-750: 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
Compressive Strength
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 Resistivity
Same in both: Electrical Conductivity 1.4 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.1 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Machinability 18 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 35%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Stiffness (E / density) 25.8 MN·m/kg
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 | Waspaloy | X-750 |
|---|---|---|
| CNC machining | Yes | — |
| Sheet metal | Yes | — |
| Default condition | Solution Annealed | — |
| Relative cost | $$$ Premium | $$$$ High |
| Min. machined wall | 1.5 mm | — |
| Best machined surface | Ra 1.6 µm | — |
| Electropolishing | Yes | — |
| HVOF Coating | Yes | — |
They share 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
Waspaloy vs X-750 — frequently asked
Is X-750 stronger than Waspaloy?
Yes. X-750 has a typical yield strength of 815 MPa (118 ksi) against 520 MPa (75.4 ksi) for Waspaloy — about 57% more. Tensile strength is 1,200 MPa (174 ksi) vs 930 MPa (135 ksi).
Which is cheaper, Waspaloy or X-750?
Waspaloy is the lower-cost material: it sits in the premium tier ($$$) while X-750 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, Waspaloy or X-750?
X-750. Its weldability rates fair (40/100) against fair (35/100) for Waspaloy.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Waspaloy and X-750 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.