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Nickel Alloy ENiCrCoMo-1 vs ERNiCrFe-6

Nickel Alloy · grade comparison

Nickel Alloy ENiCrCoMo-1 and ERNiCrFe-6 are both nickel alloy grades. ENiCrCoMo-1 is the stronger of the two: tensile strength 720 MPa (104 ksi) against 655 MPa (95 ksi) for ERNiCrFe-6, about 10% more. ENiCrCoMo-1 is harder — 210 HB against 185 HB for ERNiCrFe-6 — which matters for wear surfaces and threads. ENiCrCoMo-1 runs hotter in service (1,100°C vs 950°C continuous) and ERNiCrFe-6 conducts electricity better (1.7 % IACS vs 1.4 % IACS). On the shop floor, ERNiCrFe-6 forms better (good vs fair).

ENiCrCoMo-1Choose it when strength drives the design, or when surface hardness matters.

ENiCrCoMo-1 vs ERNiCrFe-6: properties

ENiCrCoMo-1ERNiCrFe-6

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

211 GPa30.6 Msi
207 GPa30 Msi

Shear Modulus

81 GPa11.7 Msi
78 GPa11.3 Msi

Bulk Modulus

176 GPa25.5 Msi
168 GPa24.4 Msi

Poisson's Ratio

0.3
0.31

Tensile Strength (Ultimate)

720 MPa104 ksi
655 MPa95 ksi

Yield Strength (0.2% offset)

430 MPa62.4 ksi
410 MPa59.5 ksi

Elongation at Break

38%
35%

Compressive Strength

440 MPa63.8 ksi
—

Shear Strength

480 MPa69.6 ksi
420 MPa60.9 ksi

Fatigue Strength (Endurance Limit)

300 MPa43.5 ksi
250 MPa36.3 ksi

Fracture Toughness (K_IC)

100 MPa·√m91 ksi·√in
—

Hardness, Brinell

210 HB
185 HB

Hardness, Rockwell B

94 HRB
90 HRB

Hardness, Rockwell C

17 HRC
—

Hardness, Vickers

220 HV
—

Same in both: Reduction in Area 40% · Charpy V-Notch Impact (RT) 75 J55.3 ft·lbf

Physical

Density and transition temperatures.

Density

8.36 g/cm³0.3 lb/in³
8.2 g/cm³0.3 lb/in³

Melting Point (Solidus)

1,332°C2,430 °F
1,355°C2,471 °F

Liquidus Temperature

1,380°C2,516 °F
1,400°C2,552 °F

Thermal

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

Thermal Conductivity

13.6 W/m·K7.9 BTU/hr·ft·°F
14.5 W/m·K8.4 BTU/hr·ft·°F

Specific Heat Capacity

419 J/kg·K0.1 BTU/lb·°F
444 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

11.6 µm/m·K6.4 µin/in·°F
13.3 µm/m·K7.4 µin/in·°F

Latent Heat of Fusion

290 J/g125 BTU/lb
295 J/g127 BTU/lb

Max Service Temperature (continuous)

1,100°C2,012 °F
950°C1,742 °F

Same in both: Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

1.4 % IACS
1.7 % IACS

Electrical Resistivity

1.22×10⁻⁶ Ω·m48 µΩ·in
1.03×10⁻⁶ Ω·m40.6 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

80 / 100
76 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.15 V

Manufacturability

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

Machinability

20 / 100
18 / 100

Formability (cold)

35 / 100
60 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 12% · Weldability 85 / 100 · Brazeability / Solderability 55 / 100 · Polishability 60 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

175 MJ/kg75,237 BTU/lb
200 MJ/kg85,985 BTU/lb

Embodied Water

350 L/kg41.9 gal/lb
320 L/kg38.3 gal/lb

Typical Recycled Content

30%
35%

Same in both: Embodied Carbon (primary production) 14 kg CO₂/kg

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

86 kN·m/kg
80 kN·m/kg

Modulus of Resilience

438 kJ/m³
406 kJ/m³

Thermal Diffusivity

3.9 mm²/s
4 mm²/s

Thermal Shock Resistance Index

4
3

Same in both: Specific Stiffness (E / density) 25.2 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 scaleENiCrCoMo-1ERNiCrFe-6

Manufacturing and finishing

CapabilityENiCrCoMo-1ERNiCrFe-6
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

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

ENiCrCoMo-1 vs ERNiCrFe-6 — frequently asked

Is ENiCrCoMo-1 stronger than ERNiCrFe-6?

Yes. ENiCrCoMo-1 has a typical tensile strength of 720 MPa (104 ksi) against 655 MPa (95 ksi) for ERNiCrFe-6 — about 10% more.

Which is cheaper, ENiCrCoMo-1 or ERNiCrFe-6?

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 ENiCrCoMo-1 over ERNiCrFe-6?

Pick ENiCrCoMo-1 when strength drives the design, or when surface hardness matters.

Ready to make it?

Upload a CAD file and FabDigit prices the part in ENiCrCoMo-1 and ERNiCrFe-6 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.