Nickel Alloy 2.4889 vs Alumel
Nickel Alloy · grade comparison
Nickel Alloy 2.4889 and Alumel are both nickel alloy grades. 2.4889 is the stronger of the two: yield strength 400 MPa (58 ksi) against 230 MPa (33.4 ksi) for Alumel, about 74% more; tensile strength follows at 760 MPa (110 ksi) vs 570 MPa (82.7 ksi). 2.4889 is harder — 170 HB against 135 HB for Alumel — which matters for wear surfaces and threads. 2.4889 is lighter (8.12 g/cm³ vs 8.6 g/cm³ for Alumel) and 2.4889 is stiffer (216 GPa vs 186 GPa).
2.4889Choose it when strength drives the design, or when surface hardness matters.
2.4889 vs Alumel: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Poisson's Ratio 0.3
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 -200°C-328 °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 %)
Weldability
Formability (cold)
Castability
Polishability
Same in both: Brazeability / Solderability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 160 MJ/kg68,788 BTU/lb
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 | 2.4889 | Alumel |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
2.4889 vs Alumel — frequently asked
Is 2.4889 stronger than Alumel?
Yes. 2.4889 has a typical yield strength of 400 MPa (58 ksi) against 230 MPa (33.4 ksi) for Alumel — about 74% more. Tensile strength is 760 MPa (110 ksi) vs 570 MPa (82.7 ksi).
Which is cheaper, 2.4889 or Alumel?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 2.4889 or Alumel?
Alumel, by a small margin. Both rate poor for machinability — 30/100 against 22/100 for 2.4889; for welding the order is 2.4889 first (good, 65/100) then Alumel (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 2.4889 and Alumel 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.