Nickel Alloy FeNi vs NiMg Master Alloy
Nickel Alloy · grade comparison
Nickel Alloy FeNi and NiMg Master Alloy are both nickel alloy grades. FeNi is the stronger of the two: tensile strength 470 MPa (68.2 ksi) against 130 MPa (18.9 ksi) for NiMg Master Alloy, about 3.6 times as much. FeNi is the more ductile: elongation 2.5% versus 0.3% for NiMg Master Alloy. NiMg Master Alloy is lighter (6 g/cm³ vs 8 g/cm³ for FeNi) and FeNi is stiffer (200 GPa vs 140 GPa). On the shop floor, FeNi machines more easily (poor vs not recommended), FeNi welds better (14 vs 0 out of 100), and FeNi sits in a lower cost tier (standard, $$) than NiMg Master Alloy (high, $$$$).
FeNiChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
NiMg Master AlloyChoose it when weight is the constraint.
FeNi vs NiMg Master Alloy: 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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell C
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)
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
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
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)
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 | FeNi | NiMg Master Alloy |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$ Standard | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
FeNi vs NiMg Master Alloy — frequently asked
Is FeNi stronger than NiMg Master Alloy?
Yes. FeNi has a typical tensile strength of 470 MPa (68.2 ksi) against 130 MPa (18.9 ksi) for NiMg Master Alloy — about 3.6 times as much.
Which is cheaper, FeNi or NiMg Master Alloy?
FeNi is the lower-cost material: it sits in the standard tier ($$) while NiMg Master Alloy 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, FeNi or NiMg Master Alloy?
FeNi. Its machinability rates poor (22/100) against not recommended (5/100) for NiMg Master Alloy; for welding the order is FeNi first (not recommended, 14/100) then NiMg Master Alloy (not recommended, 0/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in FeNi and NiMg Master Alloy 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.