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TT7K12 vs YG3 vs YG6 vs YG8

Benchmark · 4 materials

Side-by-side benchmark of 4 ceramic grades.

TT7K12 vs YG3 and 2 more: properties

TT7K12YG3YG6YG8

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

520 GPa75.4 Msi
650 GPa94.3 Msi
630 GPa91.4 Msi
600 GPa87 Msi

Shear Modulus

213 GPa30.9 Msi
268 GPa38.9 Msi
255 GPa37 Msi
245 GPa35.5 Msi

Bulk Modulus

310 GPa45 Msi
385 GPa55.8 Msi
375 GPa54.4 Msi
360 GPa52.2 Msi

Poisson's Ratio

0.22
0.21
0.22
0.22

Tensile Strength (Ultimate)

1,150 MPa167 ksi
1,100 MPa160 ksi
1,100 MPa160 ksi
1,200 MPa174 ksi

Elongation at Break

0.2%
0%
0.2%
0.1%

Compressive Strength

4,000 MPa580 ksi
6,000 MPa870 ksi
4,600 MPa667 ksi
4,500 MPa653 ksi

Flexural Strength

1,900 MPa276 ksi
1,200 MPa174 ksi
1,800 MPa261 ksi
2,000 MPa290 ksi

Shear Strength

1,300 MPa189 ksi
900 MPa131 ksi
1,200 MPa174 ksi
1,300 MPa189 ksi

Fracture Toughness (K_IC)

13.5 MPa·√m12.3 ksi·√in
8.5 MPa·√m7.7 ksi·√in
10 MPa·√m9.1 ksi·√in
14 MPa·√m12.7 ksi·√in

Hardness, Vickers

1,200 HV
1,580 HV
1,580 HV
1,350 HV

Hardness, Knoop

1,250 HK
1,500 HK
1,500 HK
1,400 HK

Same in both: Hardness, Mohs 9

Physical

Density and transition temperatures.

Density

13.15 g/cm³0.48 lb/in³
15.1 g/cm³0.55 lb/in³
14.9 g/cm³0.54 lb/in³
14.7 g/cm³0.53 lb/in³

Melting Point (Solidus)

1,300°C2,372 °F
1,320°C2,408 °F
1,320°C2,408 °F
1,320°C2,408 °F

Porosity

0.15%
0.02%
0.02%
0.02%

Thermal

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

Thermal Conductivity

30 W/m·K17.3 BTU/hr·ft·°F
88 W/m·K50.8 BTU/hr·ft·°F
80 W/m·K46.2 BTU/hr·ft·°F
75 W/m·K43.3 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

6.5 µm/m·K3.6 µin/in·°F
4.4 µm/m·K2.4 µin/in·°F
4.5 µm/m·K2.5 µin/in·°F
4.8 µm/m·K2.7 µin/in·°F

Max Service Temperature (continuous)

800°C1,472 °F
600°C1,112 °F
600°C1,112 °F
600°C1,112 °F

Min Service Temperature

-196°C-321 °F
-196°C-321 °F
-196°C-321 °F
-200°C-328 °F

Electrical

Conductivity and insulation.

Volume Resistivity

—
2×10⁻⁵ Ω·cm
2×10⁻⁵ Ω·cm
2×10⁻⁵ Ω·cm

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

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

45 / 100
58 / 100
55 / 100
45 / 100

Manufacturability

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

Machinability

5 / 100
3 / 100
5 / 100
5 / 100

Polishability

88 / 100
92 / 100
90 / 100
90 / 100

Sintering / Firing Temperature

1,450°C2,642 °F
1,420°C2,588 °F
1,420°C2,588 °F
1,420°C2,588 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

320 MJ/kg137,575 BTU/lb
250 MJ/kg107,481 BTU/lb
330 MJ/kg141,875 BTU/lb
180 MJ/kg77,386 BTU/lb

Embodied Carbon (primary production)

28 kg CO₂/kg
20 kg CO₂/kg
24 kg CO₂/kg
12 kg CO₂/kg

Embodied Water

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

Typical Recycled Content

25%
30%
30%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

87 kN·m/kg
73 kN·m/kg
74 kN·m/kg
82 kN·m/kg

Specific Stiffness (E / density)

39.5 MN·m/kg
43 MN·m/kg
42.3 MN·m/kg
40.8 MN·m/kg

Thermal Diffusivity

9.9 mm²/s
27.8 mm²/s
24.4 mm²/s
23.2 mm²/s

Thermal Shock Resistance Index

10
34
31
31

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

CapabilityTT7K12YG3YG6YG8
Default condition————
Relative cost$$$$ High$$$$ High$$$$ High$$$$ High
Min. machined wall————
Best machined surface————

Ready to make it?

Upload a CAD file and FabDigit prices the part in TT7K12 and YG3 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.