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Nickel Alloy Incoloy 800 vs Inconel 600

Nickel Alloy · grade comparison

Nickel Alloy Incoloy 800 and Inconel 600 are both nickel alloy grades. Both yield at about 250 MPa — strength does not separate them. Inconel 600 is harder — 150 HB against 140 HB for Incoloy 800 — which matters for wear surfaces and threads. Incoloy 800 is lighter (7.94 g/cm³ vs 8.47 g/cm³ for Inconel 600) and Inconel 600 is stiffer (214 GPa vs 196 GPa).

Incoloy 800Choose it when weight is the constraint.

Inconel 600Choose it when surface hardness matters, or when the part sees heat.

Incoloy 800 vs Inconel 600: properties

Incoloy 800Inconel 600

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

196 GPa28.4 Msi
214 GPa31 Msi

Shear Modulus

75 GPa10.9 Msi
76 GPa11 Msi

Poisson's Ratio

0.34
0.32

Tensile Strength (Ultimate)

600 MPa87 ksi
620 MPa89.9 ksi

Yield Strength (0.2% offset)

250 MPa36.3 ksi
255 MPa37 ksi

Elongation at Break

45%
42%

Shear Strength

380 MPa55.1 ksi
410 MPa59.5 ksi

Charpy V-Notch Impact (RT)

200 J148 ft·lbf
250 J184 ft·lbf

Hardness, Brinell

140 HB
150 HB

Hardness, Rockwell B

80 HRB
78 HRB

Hardness, Vickers

150 HV
—

Fracture Toughness (K_IC)

—
130 MPa·√m118 ksi·√in

Same in both: Bulk Modulus 200 GPa29 Msi · Reduction in Area 60% · Fatigue Strength (Endurance Limit) 280 MPa40.6 ksi

Physical

Density and transition temperatures.

Density

7.94 g/cm³0.29 lb/in³
8.47 g/cm³0.31 lb/in³

Melting Point (Solidus)

1,357°C2,475 °F
1,354°C2,469 °F

Liquidus Temperature

1,385°C2,525 °F
1,413°C2,575 °F

Thermal

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

Thermal Conductivity

11.5 W/m·K6.6 BTU/hr·ft·°F
14.9 W/m·K8.6 BTU/hr·ft·°F

Specific Heat Capacity

460 J/kg·K0.11 BTU/lb·°F
444 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

14.4 µm/m·K8 µin/in·°F
13.3 µm/m·K7.4 µin/in·°F

Max Service Temperature (continuous)

815°C1,499 °F
1,100°C2,012 °F

Min Service Temperature

-196°C-321 °F
-250°C-418 °F

Same in both: Latent Heat of Fusion 290 J/g125 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

1.7 % IACS
1.7 % IACS

Electrical Resistivity

9.9×10⁻⁷ Ω·m39 µΩ·in
1.03×10⁻⁶ Ω·m40.6 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.15 V
-0.17 V

Corrosion Resistance

72 / 100
78 / 100

Manufacturability

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

Machinability

30 / 100
28 / 100

Machinability Rating (AISI 1212 = 100 %)

28%
25%

Weldability

78 / 100
80 / 100

Formability (cold)

80 / 100
78 / 100

Castability

40 / 100
30 / 100

Brazeability / Solderability

70 / 100
65 / 100

Polishability

75 / 100
70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

95 MJ/kg40,843 BTU/lb
150 MJ/kg64,488 BTU/lb

Embodied Carbon (primary production)

7 kg CO₂/kg
11.5 kg CO₂/kg

Embodied Water

200 L/kg24 gal/lb
320 L/kg38.3 gal/lb

Same in both: Typical Recycled Content 40%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

76 kN·m/kg
73 kN·m/kg

Specific Stiffness (E / density)

24.7 MN·m/kg
25.3 MN·m/kg

Modulus of Resilience

159 kJ/m³
152 kJ/m³

Thermal Diffusivity

3.1 mm²/s
4 mm²/s

Thermal Shock Resistance Index

2
3

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 scaleInconel 600Incoloy 800

Manufacturing and finishing

CapabilityIncoloy 800Inconel 600
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Both take the same 3 finishes: Gold Plating, Plasma Spray, Silver Plating.

Incoloy 800 vs Inconel 600 — frequently asked

What is the difference between Incoloy 800 and Inconel 600?

Nickel Alloy Incoloy 800 and Inconel 600 are both nickel alloy grades. Both yield at about 250 MPa — strength does not separate them. Inconel 600 is harder — 150 HB against 140 HB for Incoloy 800 — which matters for wear surfaces and threads.

Which is cheaper, Incoloy 800 or Inconel 600?

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.

When should I choose Incoloy 800 over Inconel 600?

Pick Incoloy 800 when weight is the constraint. Pick Inconel 600 when surface hardness matters, or when the part sees heat.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Incoloy 800 and Inconel 600 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.