Table 9.8.3.3: Units and Symbols Used to Present Physical Property Data and ASTM Test Procedures

MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures

Last Updated 29 Oct 2026

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Property	Unit	Symbol	Recommended ASTM Test Procedures
Density	lb/in.³	ω	C 693
Specific heat	Btu/lb-°F	C	D 2766
Thermal conductivity	Btu(hr-ft²-°F/ft)	K	C 714^a
Mean coefficient of thermal expansion	10^-6(in./in./°F)	α	E 228

a ASTM C 714 is a test for thermal diffusivity from which thermal conductivity can be computed.

MIL-HDBK-5J, Metallic Materials and Elements for Aerospace Vehicle Structures

Last Updated 29 Oct 2026

Hover any section to copy its link or text, ask Copilot about it, or bookmark it.

Property	Unit	Symbol	Recommended ASTM Test Procedures
Density	lb/in.³	ω	C 693
Specific heat	Btu/lb-°F	C	D 2766
Thermal conductivity	Btu(hr-ft²-°F/ft)	K	C 714^a
Mean coefficient of thermal expansion	10^-6(in./in./°F)	α	E 228

a ASTM C 714 is a test for thermal diffusivity from which thermal conductivity can be computed.