Nickel Alloy BNi-7 vs ENiCrCoMo-1
Nickel Alloy · grade comparison
Nickel Alloy BNi-7 and ENiCrCoMo-1 are both nickel alloy grades. ENiCrCoMo-1 is the stronger of the two: tensile strength 720 MPa (104 ksi) against 420 MPa (60.9 ksi) for BNi-7, about 71% more. ENiCrCoMo-1 is the more ductile: elongation 38% versus 1% for BNi-7, and BNi-7 is harder (52 HRC vs 17 HRC). BNi-7 is lighter (7.6 g/cm³ vs 8.36 g/cm³ for ENiCrCoMo-1) and ENiCrCoMo-1 is stiffer (211 GPa vs 175 GPa). On the shop floor, ENiCrCoMo-1 machines more easily (poor vs not recommended) and ENiCrCoMo-1 welds better (excellent vs not recommended).
BNi-7Choose it when weight is the constraint.
ENiCrCoMo-1Choose it when strength drives the design, or when the part is bent, formed or impact-loaded.
BNi-7 vs ENiCrCoMo-1: 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
Tensile Strength (Ultimate)
Elongation at Break
Shear Strength
Hardness, Rockwell C
Hardness, Vickers
Bulk Modulus
Yield Strength (0.2% offset)
Reduction in Area
Compressive Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
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)
Latent Heat of Fusion
Same in both: Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Electrical Conductivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Galvanic Potential (seawater, vs SCE)
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Brazeability / Solderability
Polishability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
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 | BNi-7 | ENiCrCoMo-1 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.
BNi-7 vs ENiCrCoMo-1 — frequently asked
Is ENiCrCoMo-1 stronger than BNi-7?
Yes. ENiCrCoMo-1 has a typical tensile strength of 720 MPa (104 ksi) against 420 MPa (60.9 ksi) for BNi-7 — about 71% more.
Which is cheaper, BNi-7 or ENiCrCoMo-1?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, BNi-7 or ENiCrCoMo-1?
ENiCrCoMo-1. Its machinability rates poor (20/100) against not recommended (8/100) for BNi-7; for welding the order is ENiCrCoMo-1 first (excellent, 85/100) then BNi-7 (not recommended, 10/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in BNi-7 and ENiCrCoMo-1 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.