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Nickel Alloy BNi-1 vs BNi-9

Nickel Alloy · grade comparison

Nickel Alloy BNi-1 and BNi-9 are both nickel alloy grades. BNi-9 runs hotter in service (980°C vs 900°C continuous) and BNi-1 conducts heat better (16 W/m·K vs 14 W/m·K).

BNi-9Choose it when the part sees heat.

BNi-1 vs BNi-9: properties

BNi-1BNi-9

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

77 GPa11.2 Msi
—

Bulk Modulus

170 GPa24.7 Msi
—

Poisson's Ratio

0.3
0.31

Yield Strength (0.2% offset)

500 MPa72.5 ksi
—

Reduction in Area

1%
—

Compressive Strength

1,600 MPa232 ksi
—

Shear Strength

270 MPa39.2 ksi
320 MPa46.4 ksi

Fatigue Strength (Endurance Limit)

180 MPa26.1 ksi
—

Fracture Toughness (K_IC)

20 MPa·√m18.2 ksi·√in
—

Charpy V-Notch Impact (RT)

2 J1.5 ft·lbf
—

Hardness, Brinell

520 HB
—

Hardness, Rockwell C

52 HRC
—

Same in both: Elastic (Young's) Modulus 200 GPa29 Msi · Tensile Strength (Ultimate) 550 MPa79.8 ksi · Elongation at Break 1% · Hardness, Vickers 550 HV

Physical

Density and transition temperatures.

Density

7.89 g/cm³0.29 lb/in³
7.9 g/cm³0.29 lb/in³

Melting Point (Solidus)

977°C1,791 °F
1,055°C1,931 °F

Liquidus Temperature

1,038°C1,900 °F
1,055°C1,931 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

16 W/m·K9.2 BTU/hr·ft·°F
14 W/m·K8.1 BTU/hr·ft·°F

Latent Heat of Fusion

290 J/g125 BTU/lb
—

Max Service Temperature (continuous)

900°C1,652 °F
980°C1,796 °F

Min Service Temperature

-100°C-148 °F
-195°C-319 °F

Same in both: Specific Heat Capacity 450 J/kg·K0.11 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 12.5 µm/m·K6.9 µin/in·°F

Electrical

Conductivity and insulation.

Electrical Conductivity

1.6 % IACS
—

Electrical Resistivity

1.1×10⁻⁶ Ω·m43.3 µΩ·in
1.2×10⁻⁶ Ω·m47.2 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.28 V
—

Corrosion Resistance

58 / 100
72 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

6 / 100
12 / 100

Machinability Rating (AISI 1212 = 100 %)

5%
—

Weldability

10 / 100
15 / 100

Formability (cold)

3 / 100
5 / 100

Castability

55 / 100
—

Brazeability / Solderability

90 / 100
92 / 100

Polishability

60 / 100
55 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

200 MJ/kg85,985 BTU/lb
165 MJ/kg70,937 BTU/lb

Embodied Carbon (primary production)

15 kg CO₂/kg
13 kg CO₂/kg

Embodied Water

320 L/kg38.3 gal/lb
—

Typical Recycled Content

10%
5%

Common Calculations

Ratios derived from the values above.

Thermal Diffusivity

4.5 mm²/s
3.9 mm²/s

Thermal Shock Resistance Index

4
3

Same in both: Specific Strength (UTS / density) 70 kN·m/kg · Specific Stiffness (E / density) 25.3 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.

2005001,0006.577.588.59Density (g/cm³)Yield strength (MPa) — log scaleBNi-1

Manufacturing and finishing

CapabilityBNi-1BNi-9
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-1 vs BNi-9 — frequently asked

What is the difference between BNi-1 and BNi-9?

Nickel Alloy BNi-1 and BNi-9 are both nickel alloy grades. BNi-9 runs hotter in service (980°C vs 900°C continuous) and BNi-1 conducts heat better (16 W/m·K vs 14 W/m·K).

Which is cheaper, BNi-1 or BNi-9?

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-1 or BNi-9?

BNi-9, by a small margin. Both rate not recommended for machinability — 12/100 against 6/100 for BNi-1; for welding the order is BNi-9 first (poor, 15/100) then BNi-1 (not recommended, 10/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in BNi-1 and BNi-9 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.