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YG3 vs YG6X

Ceramic · grade comparison

YG3 and YG6X are both ceramic grades. YG6X is harder — 1,750 HV against 1,580 HV for YG3 — which matters for wear surfaces and threads. YG6X runs hotter in service (800°C vs 600°C continuous) and YG3 conducts heat better (88 W/m·K vs 79 W/m·K).

YG6XChoose it when surface hardness matters, or when the part sees heat.

YG3 vs YG6X: properties

YG3YG6X

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

650 GPa94.3 Msi
630 GPa91.4 Msi

Shear Modulus

268 GPa38.9 Msi
255 GPa37 Msi

Bulk Modulus

385 GPa55.8 Msi
380 GPa55.1 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
5,800 MPa841 ksi

Flexural Strength

1,200 MPa174 ksi
1,900 MPa276 ksi

Shear Strength

900 MPa131 ksi
—

Hardness, Vickers

1,580 HV
1,750 HV

Hardness, Knoop

1,500 HK
—

Same in both: Fracture Toughness (K_IC) 8.5 MPa·√m7.7 ksi·√in · Hardness, Mohs 9

Physical

Density and transition temperatures.

Density

15.1 g/cm³0.55 lb/in³
14.9 g/cm³0.54 lb/in³

Melting Point (Solidus)

1,320°C2,408 °F
—

Porosity

0.02%
0.05%

Thermal

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

Thermal Conductivity

88 W/m·K50.8 BTU/hr·ft·°F
79 W/m·K45.6 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

4.4 µm/m·K2.4 µin/in·°F
4.7 µm/m·K2.6 µin/in·°F

Max Service Temperature (continuous)

600°C1,112 °F
800°C1,472 °F

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

Electrical

Conductivity and insulation.

Same in both: Electrical Resistivity 2×10⁻⁷ Ω·m7.87 µΩ·in · Volume Resistivity 2×10⁻⁵ Ω·cm

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

58 / 100
55 / 100

Manufacturability

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

Machinability

3 / 100
5 / 100

Polishability

92 / 100
88 / 100

Same in both: Sintering / Firing Temperature 1,420°C2,588 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

250 MJ/kg107,481 BTU/lb
300 MJ/kg128,977 BTU/lb

Embodied Carbon (primary production)

20 kg CO₂/kg
22 kg CO₂/kg

Embodied Water

500 L/kg59.9 gal/lb
400 L/kg47.9 gal/lb

Same in both: Typical Recycled Content 30%

Common Calculations

Ratios derived from the values above.

Specific Stiffness (E / density)

43 MN·m/kg
42.3 MN·m/kg

Thermal Diffusivity

27.8 mm²/s
24.1 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

CapabilityYG3YG6X
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

YG3 vs YG6X — frequently asked

What is the difference between YG3 and YG6X?

YG3 and YG6X are both ceramic grades. YG6X is harder — 1,750 HV against 1,580 HV for YG3 — which matters for wear surfaces and threads. YG6X runs hotter in service (800°C vs 600°C continuous) and YG3 conducts heat better (88 W/m·K vs 79 W/m·K).

Which is cheaper, YG3 or YG6X?

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 YG6X?

Pick YG6X when surface hardness matters, or when the part sees heat.

Ready to make it?

Upload a CAD file and FabDigit prices the part in YG3 and YG6X 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.