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C0G/NP0 vs PZT-4

Ceramic · grade comparison

C0G/NP0 and PZT-4 are both ceramic grades. PZT-4 is the stronger of the two: tensile strength 75 MPa (10.9 ksi) against 60 MPa (8.7 ksi) for C0G/NP0, about 25% more. C0G/NP0 is harder — 680 HV against 320 HV for PZT-4 — which matters for wear surfaces and threads. C0G/NP0 is lighter (5.7 g/cm³ vs 7.5 g/cm³ for PZT-4) and C0G/NP0 is stiffer (120 GPa vs 70 GPa).

C0G/NP0Choose it when surface hardness matters, or when weight is the constraint.

PZT-4Choose it when strength drives the design, or when the part sees heat.

C0G/NP0 vs PZT-4: properties

C0G/NP0PZT-4

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

120 GPa17.4 Msi
70 GPa10.2 Msi

Shear Modulus

47 GPa6.8 Msi
26 GPa3.8 Msi

Bulk Modulus

87 GPa12.6 Msi
60 GPa8.7 Msi

Poisson's Ratio

0.27
0.31

Tensile Strength (Ultimate)

60 MPa8.7 ksi
75 MPa10.9 ksi

Compressive Strength

800 MPa116 ksi
520 MPa75.4 ksi

Flexural Strength

130 MPa18.9 ksi
85 MPa12.3 ksi

Fracture Toughness (K_IC)

1.2 MPa·√m1.1 ksi·√in
1 MPa·√m0.91 ksi·√in

Hardness, Vickers

680 HV
320 HV

Hardness, Knoop

720 HK
300 HK

Hardness, Mohs

6.5
5

Elongation at Break

—
0.1%

Shear Strength

—
65 MPa9.4 ksi

Physical

Density and transition temperatures.

Density

5.7 g/cm³0.21 lb/in³
7.5 g/cm³0.27 lb/in³

Melting Point (Solidus)

1,450°C2,642 °F
—

Porosity

0.5%
1%

Thermal

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

Thermal Conductivity

3 W/m·K1.7 BTU/hr·ft·°F
1.3 W/m·K0.72 BTU/hr·ft·°F

Specific Heat Capacity

550 J/kg·K0.13 BTU/lb·°F
350 J/kg·K0.08 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

9.5 µm/m·K5.3 µin/in·°F
4 µm/m·K2.2 µin/in·°F

Max Service Temperature (continuous)

125°C257 °F
160°C320 °F

Min Service Temperature

-55°C-67 °F
-50°C-58 °F

Electrical

Conductivity and insulation.

Dielectric Strength

25 kV/mm635 V/mil
10 kV/mm254 V/mil

Dielectric Constant (1 MHz)

65
1,300

Dissipation Factor (1 MHz)

2×10⁻⁴
0.004

Same in both: Electrical Resistivity 1×10¹¹ Ω·m3.94×10¹⁸ µΩ·in · Volume Resistivity 1×10¹³ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

90 / 100
65 / 100

Manufacturability

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

Machinability

5 / 100
12 / 100

Sintering / Firing Temperature

1,300°C2,372 °F
1,275°C2,327 °F

Same in both: Polishability 70 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

70 MJ/kg30,095 BTU/lb
—

Embodied Carbon (primary production)

6 kg CO₂/kg
—

Embodied Water

200 L/kg24 gal/lb
—

Typical Recycled Content

0%
—

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

11 kN·m/kg
10 kN·m/kg

Specific Stiffness (E / density)

21.1 MN·m/kg
9.3 MN·m/kg

Thermal Diffusivity

1 mm²/s
0.5 mm²/s

Same in both: Thermal Shock Resistance Index 0

Strength versus weight

Yield strength against density for every ceramic grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.

501002005001,000234567Density (g/cm³)Yield strength (MPa) — log scale

Manufacturing and finishing

CapabilityC0G/NP0PZT-4
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

C0G/NP0 vs PZT-4 — frequently asked

Is PZT-4 stronger than C0G/NP0?

Yes. PZT-4 has a typical tensile strength of 75 MPa (10.9 ksi) against 60 MPa (8.7 ksi) for C0G/NP0 — about 25% more.

Which is cheaper, C0G/NP0 or PZT-4?

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, C0G/NP0 or PZT-4?

PZT-4, by a small margin. Both rate not recommended for machinability — 12/100 against 5/100 for C0G/NP0.

Ready to make it?

Upload a CAD file and FabDigit prices the part in C0G/NP0 and PZT-4 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.