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Nickel Alloy CU5MCuC vs CZ-100

Nickel Alloy · grade comparison

Nickel Alloy CU5MCuC and CZ-100 are both nickel alloy grades. CU5MCuC is the stronger of the two: yield strength 235 MPa (34.1 ksi) against 160 MPa (23.2 ksi) for CZ-100, about 47% more; tensile strength follows at 490 MPa (71.1 ksi) vs 380 MPa (55.1 ksi). CU5MCuC is the more ductile: elongation 40% versus 25% for CZ-100, and CU5MCuC is harder (160 HB vs 110 HB). CU5MCuC is lighter (8.1 g/cm³ vs 8.85 g/cm³ for CZ-100) and CU5MCuC is stiffer (193 GPa vs 180 GPa). On the shop floor, CU5MCuC welds better (very good vs good).

CU5MCuCChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

CU5MCuC vs CZ-100: properties

CU5MCuCCZ-100

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

193 GPa28 Msi
180 GPa26.1 Msi

Shear Modulus

75 GPa10.9 Msi
70 GPa10.2 Msi

Bulk Modulus

160 GPa23.2 Msi
170 GPa24.7 Msi

Poisson's Ratio

0.3
0.31

Tensile Strength (Ultimate)

490 MPa71.1 ksi
380 MPa55.1 ksi

Yield Strength (0.2% offset)

235 MPa34.1 ksi
160 MPa23.2 ksi

Elongation at Break

40%
25%

Reduction in Area

40%
30%

Fatigue Strength (Endurance Limit)

200 MPa29 ksi
140 MPa20.3 ksi

Charpy V-Notch Impact (RT)

100 J73.8 ft·lbf
45 J33.2 ft·lbf

Hardness, Brinell

160 HB
110 HB

Hardness, Rockwell B

85 HRB
62 HRB

Compressive Strength

—
165 MPa23.9 ksi

Shear Strength

—
250 MPa36.3 ksi

Hardness, Vickers

—
115 HV

Physical

Density and transition temperatures.

Density

8.1 g/cm³0.29 lb/in³
8.85 g/cm³0.32 lb/in³

Melting Point (Solidus)

1,370°C2,498 °F
1,315°C2,399 °F

Same in both: Liquidus Temperature 1,400°C2,552 °F

Thermal

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

Thermal Conductivity

11.1 W/m·K6.4 BTU/hr·ft·°F
50 W/m·K28.9 BTU/hr·ft·°F

Specific Heat Capacity

440 J/kg·K0.11 BTU/lb·°F
456 J/kg·K0.11 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

14 µm/m·K7.8 µin/in·°F
13.3 µm/m·K7.4 µin/in·°F

Latent Heat of Fusion

290 J/g125 BTU/lb
297 J/g128 BTU/lb

Max Service Temperature (continuous)

540°C1,004 °F
480°C896 °F

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

Electrical

Conductivity and insulation.

Electrical Conductivity

1.5 % IACS
12 % IACS

Electrical Resistivity

1.13×10⁻⁶ Ω·m44.5 µΩ·in
1.4×10⁻⁷ Ω·m5.51 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.15 V
-0.2 V

Corrosion Resistance

85 / 100
78 / 100

Manufacturability

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

Machinability

28 / 100
35 / 100

Machinability Rating (AISI 1212 = 100 %)

20%
30%

Weldability

72 / 100
60 / 100

Formability (cold)

20 / 100
25 / 100

Castability

60 / 100
65 / 100

Brazeability / Solderability

55 / 100
65 / 100

Polishability

60 / 100
70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

95 MJ/kg40,843 BTU/lb
165 MJ/kg70,937 BTU/lb

Embodied Carbon (primary production)

6.5 kg CO₂/kg
13 kg CO₂/kg

Embodied Water

300 L/kg35.9 gal/lb
200 L/kg24 gal/lb

Same in both: Typical Recycled Content 40%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

60 kN·m/kg
43 kN·m/kg

Specific Stiffness (E / density)

23.8 MN·m/kg
20.3 MN·m/kg

Modulus of Resilience

143 kJ/m³
71 kJ/m³

Thermal Diffusivity

3.1 mm²/s
12.4 mm²/s

Thermal Shock Resistance Index

2
8

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 scaleCZ-100CU5MCuC

Manufacturing and finishing

CapabilityCU5MCuCCZ-100
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

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

CU5MCuC vs CZ-100 — frequently asked

Is CU5MCuC stronger than CZ-100?

Yes. CU5MCuC has a typical yield strength of 235 MPa (34.1 ksi) against 160 MPa (23.2 ksi) for CZ-100 — about 47% more. Tensile strength is 490 MPa (71.1 ksi) vs 380 MPa (55.1 ksi).

Which is cheaper, CU5MCuC or CZ-100?

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, CU5MCuC or CZ-100?

CZ-100. Its machinability rates fair (35/100) against poor (28/100) for CU5MCuC; for welding the order is CU5MCuC first (very good, 72/100) then CZ-100 (good, 60/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in CU5MCuC and CZ-100 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.