Nickel Alloy Mu-metal vs N09777
Nickel Alloy · grade comparison
Nickel Alloy Mu-metal and N09777 are both nickel alloy grades. N09777 is the stronger of the two: yield strength 1,000 MPa (145 ksi) against 250 MPa (36.3 ksi) for Mu-metal, about 4.0 times as much; tensile strength follows at 1,275 MPa (185 ksi) vs 550 MPa (79.8 ksi). In exchange, Mu-metal is the more ductile: elongation 40% versus 15% for N09777, and N09777 is harder (400 HV vs 120 HV). N09777 is lighter (8.14 g/cm³ vs 8.74 g/cm³ for Mu-metal) and Mu-metal is stiffer (215 GPa vs 160 GPa). On the shop floor, Mu-metal welds better (good vs fair).
Mu-metalChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
N09777Choose it when strength drives the design, or when weight is the constraint.
Mu-metal vs N09777: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Fracture Toughness (K_IC)
Hardness, Rockwell C
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 285 J/g123 BTU/lb · 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 %)
Weldability
Formability (cold)
Brazeability / Solderability
Same in both: Castability 30 / 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 25%
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 | Mu-metal | N09777 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
Mu-metal vs N09777 — frequently asked
Is N09777 stronger than Mu-metal?
Yes. N09777 has a typical yield strength of 1,000 MPa (145 ksi) against 250 MPa (36.3 ksi) for Mu-metal — about 4.0 times as much. Tensile strength is 1,275 MPa (185 ksi) vs 550 MPa (79.8 ksi).
Which is cheaper, Mu-metal or N09777?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Mu-metal or N09777?
Mu-metal. Its weldability rates good (55/100) against fair (45/100) for N09777.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Mu-metal and N09777 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.