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Nickel Alloy CZ-100 vs N7M

Nickel Alloy · grade comparison

Nickel Alloy CZ-100 and N7M are both nickel alloy grades. N7M is the stronger of the two: yield strength 310 MPa (45 ksi) against 160 MPa (23.2 ksi) for CZ-100, about 94% more; tensile strength follows at 585 MPa (84.8 ksi) vs 380 MPa (55.1 ksi). N7M is the more ductile: elongation 30% versus 25% for CZ-100, and N7M is harder (187 HB vs 110 HB). CZ-100 is lighter (8.85 g/cm³ vs 9.22 g/cm³ for N7M) and N7M is stiffer (210 GPa vs 180 GPa). On the shop floor, CZ-100 machines more easily (fair vs poor).

CZ-100Choose it when weight is the constraint, or when the part is machined in volume.

N7MChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

CZ-100 vs N7M: properties

CZ-100N7M

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

180 GPa26.1 Msi
210 GPa30.5 Msi

Shear Modulus

70 GPa10.2 Msi
79 GPa11.5 Msi

Bulk Modulus

170 GPa24.7 Msi
194 GPa28.1 Msi

Poisson's Ratio

0.31
0.32

Tensile Strength (Ultimate)

380 MPa55.1 ksi
585 MPa84.8 ksi

Yield Strength (0.2% offset)

160 MPa23.2 ksi
310 MPa45 ksi

Elongation at Break

25%
30%

Compressive Strength

165 MPa23.9 ksi
—

Shear Strength

250 MPa36.3 ksi
400 MPa58 ksi

Fatigue Strength (Endurance Limit)

140 MPa20.3 ksi
250 MPa36.3 ksi

Charpy V-Notch Impact (RT)

45 J33.2 ft·lbf
90 J66.4 ft·lbf

Hardness, Brinell

110 HB
187 HB

Hardness, Rockwell B

62 HRB
92 HRB

Hardness, Vickers

115 HV
200 HV

Same in both: Reduction in Area 30%

Physical

Density and transition temperatures.

Density

8.85 g/cm³0.32 lb/in³
9.22 g/cm³0.33 lb/in³

Melting Point (Solidus)

1,315°C2,399 °F
1,330°C2,426 °F

Liquidus Temperature

1,400°C2,552 °F
1,380°C2,516 °F

Thermal

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

Thermal Conductivity

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

Specific Heat Capacity

456 J/kg·K0.11 BTU/lb·°F
373 J/kg·K0.09 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

13.3 µm/m·K7.4 µin/in·°F
10.3 µm/m·K5.7 µin/in·°F

Latent Heat of Fusion

297 J/g128 BTU/lb
—

Max Service Temperature (continuous)

480°C896 °F
450°C842 °F

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

Electrical

Conductivity and insulation.

Electrical Conductivity

12 % IACS
1.3 % IACS

Electrical Resistivity

1.4×10⁻⁷ Ω·m5.51 µΩ·in
1.37×10⁻⁶ Ω·m53.9 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.2 V
-0.15 V

Corrosion Resistance

78 / 100
84 / 100

Manufacturability

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

Machinability

35 / 100
22 / 100

Machinability Rating (AISI 1212 = 100 %)

30%
12%

Weldability

60 / 100
68 / 100

Formability (cold)

25 / 100
20 / 100

Castability

65 / 100
62 / 100

Brazeability / Solderability

65 / 100
55 / 100

Same in both: Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

165 MJ/kg70,937 BTU/lb
180 MJ/kg77,386 BTU/lb

Embodied Carbon (primary production)

13 kg CO₂/kg
13.5 kg CO₂/kg

Embodied Water

200 L/kg24 gal/lb
350 L/kg41.9 gal/lb

Same in both: Typical Recycled Content 40%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

43 kN·m/kg
63 kN·m/kg

Specific Stiffness (E / density)

20.3 MN·m/kg
22.8 MN·m/kg

Modulus of Resilience

71 kJ/m³
229 kJ/m³

Thermal Diffusivity

12.4 mm²/s
3.2 mm²/s

Thermal Shock Resistance Index

8
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 scaleCZ-100N7M

Manufacturing and finishing

CapabilityCZ-100N7M
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

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

CZ-100 vs N7M — frequently asked

Is N7M stronger than CZ-100?

Yes. N7M has a typical yield strength of 310 MPa (45 ksi) against 160 MPa (23.2 ksi) for CZ-100 — about 94% more. Tensile strength is 585 MPa (84.8 ksi) vs 380 MPa (55.1 ksi).

Which is cheaper, CZ-100 or N7M?

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, CZ-100 or N7M?

CZ-100. Its machinability rates fair (35/100) against poor (22/100) for N7M; for welding the order is N7M first (good, 68/100) then CZ-100 (good, 60/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in CZ-100 and N7M 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.