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M60J vs T800H

Composite · grade comparison

M60J and T800H are both composite grades. T800H is the stronger of the two: tensile strength 5,490 MPa (796 ksi) against 3,820 MPa (554 ksi) for M60J, about 44% more. T800H is the more ductile: elongation 1.9% versus 0.7% for M60J. T800H is lighter (1.81 g/cm³ vs 1.94 g/cm³ for M60J) and M60J is stiffer (588 GPa vs 294 GPa).

T800HChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

M60J vs T800H: properties

M60JT800H

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

588 GPa85.3 Msi
294 GPa42.6 Msi

Poisson's Ratio

0.27
—

Tensile Strength (Ultimate)

3,820 MPa554 ksi
5,490 MPa796 ksi

Elongation at Break

0.7%
1.9%

Compressive Strength

1,000 MPa145 ksi
2,400 MPa348 ksi

Physical

Density and transition temperatures.

Density

1.94 g/cm³0.07 lb/in³
1.81 g/cm³0.07 lb/in³

Thermal

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

Thermal Conductivity

150 W/m·K86.7 BTU/hr·ft·°F
35 W/m·K20.2 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

-1.1 µm/m·K-0.61 µin/in·°F
-0.56 µm/m·K-0.31 µin/in·°F

Same in both: Specific Heat Capacity 750 J/kg·K0.18 BTU/lb·°F · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -269°C-452 °F · Max Service Temperature (short-term) 500°C932 °F

Electrical

Conductivity and insulation.

Electrical Resistivity

7.6×10⁻⁶ Ω·m299 µΩ·in
1.4×10⁻⁵ Ω·m551 µΩ·in

Volume Resistivity

7.6×10⁻⁴ Ω·cm
—

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

90 / 100
92 / 100

UV / Weathering Resistance

90 / 100
85 / 100

Manufacturability

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

Machinability

15 / 100
18 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

700 MJ/kg300,946 BTU/lb
500 MJ/kg214,962 BTU/lb

Embodied Carbon (primary production)

50 kg CO₂/kg
34 kg CO₂/kg

Embodied Water

—
600 L/kg71.9 gal/lb

Same in both: Typical Recycled Content 0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

1,969 kN·m/kg
3,033 kN·m/kg

Specific Stiffness (E / density)

303.1 MN·m/kg
162.4 MN·m/kg

Thermal Diffusivity

103.1 mm²/s
25.8 mm²/s

Thermal Shock Resistance Index

-886
-1,167

Strength versus weight

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

1101001,000510Density (g/cm³)Yield strength (MPa) — log scale

Manufacturing and finishing

CapabilityM60JT800H
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

M60J vs T800H — frequently asked

Is T800H stronger than M60J?

Yes. T800H has a typical tensile strength of 5,490 MPa (796 ksi) against 3,820 MPa (554 ksi) for M60J — about 44% more.

Which is cheaper, M60J or T800H?

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 M60J over T800H?

Pick T800H when strength drives the design, or when the part is bent, formed or impact-loaded.

Ready to make it?

Upload a CAD file and FabDigit prices the part in M60J and T800H 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.