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YG3 vs YT5

Ceramic · grade comparison

YG3 and YT5 are both ceramic grades. YG3 is harder — 1,580 HV against 1,350 HV for YT5 — which matters for wear surfaces and threads. YT5 is lighter (13 g/cm³ vs 15.1 g/cm³ for YG3) and YG3 is stiffer (650 GPa vs 520 GPa).

YG3Choose it when surface hardness matters.

YT5Choose it when weight is the constraint, or when the part sees heat.

YG3 vs YT5: properties

YG3YT5

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

650 GPa94.3 Msi
520 GPa75.4 Msi

Shear Modulus

268 GPa38.9 Msi
210 GPa30.5 Msi

Bulk Modulus

385 GPa55.8 Msi
310 GPa45 Msi

Poisson's Ratio

0.21
0.22

Tensile Strength (Ultimate)

1,100 MPa160 ksi
—

Elongation at Break

0%
—

Compressive Strength

6,000 MPa870 ksi
4,300 MPa624 ksi

Flexural Strength

1,200 MPa174 ksi
1,500 MPa218 ksi

Shear Strength

900 MPa131 ksi
—

Fracture Toughness (K_IC)

8.5 MPa·√m7.7 ksi·√in
11 MPa·√m10 ksi·√in

Hardness, Vickers

1,580 HV
1,350 HV

Hardness, Knoop

1,500 HK
—

Same in both: Hardness, Mohs 9

Physical

Density and transition temperatures.

Density

15.1 g/cm³0.55 lb/in³
13 g/cm³0.47 lb/in³

Same in both: Melting Point (Solidus) 1,320°C2,408 °F · Porosity 0.02%

Thermal

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

Thermal Conductivity

88 W/m·K50.8 BTU/hr·ft·°F
42 W/m·K24.3 BTU/hr·ft·°F

Specific Heat Capacity

210 J/kg·K0.05 BTU/lb·°F
230 J/kg·K0.05 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

4.4 µm/m·K2.4 µin/in·°F
6.2 µm/m·K3.4 µin/in·°F

Max Service Temperature (continuous)

600°C1,112 °F
900°C1,652 °F

Min Service Temperature

-196°C-321 °F
-200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

2×10⁻⁷ Ω·m7.87 µΩ·in
3.5×10⁻⁷ Ω·m13.8 µΩ·in

Volume Resistivity

2×10⁻⁵ Ω·cm
—

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

58 / 100
40 / 100

Manufacturability

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

Machinability

3 / 100
5 / 100

Polishability

92 / 100
85 / 100

Sintering / Firing Temperature

1,420°C2,588 °F
1,430°C2,606 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

250 MJ/kg107,481 BTU/lb
350 MJ/kg150,473 BTU/lb

Embodied Carbon (primary production)

20 kg CO₂/kg
25 kg CO₂/kg

Embodied Water

500 L/kg59.9 gal/lb
—

Typical Recycled Content

30%
25%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

43 MN·m/kg
40 MN·m/kg

Thermal Diffusivity

27.8 mm²/s
14 mm²/s

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

CapabilityYG3YT5
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

YG3 vs YT5 — frequently asked

What is the difference between YG3 and YT5?

YG3 and YT5 are both ceramic grades. YG3 is harder — 1,580 HV against 1,350 HV for YT5 — which matters for wear surfaces and threads. YT5 is lighter (13 g/cm³ vs 15.1 g/cm³ for YG3) and YG3 is stiffer (650 GPa vs 520 GPa).

Which is cheaper, YG3 or YT5?

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 YG3 over YT5?

Pick YG3 when surface hardness matters. Pick YT5 when weight is the constraint, or when the part sees heat.

Ready to make it?

Upload a CAD file and FabDigit prices the part in YG3 and YT5 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.