Thermal Conductivity of Common Metals
Name	Thermal Conductivity W/cm K	Thermal Conductivity W/m K
Ingot iron	0.7
AISI-SAE 1020	0.52
Stainless steel type 304	0.15
Cast gray iron	0.47
Hastelloy C	0.12
Inconel	0.15
Aluminum Pure		237
Aluminum alloy 3003, Rolled	1.9
Aluminum alloy 2014, Annealed	1.9
Aluminum alloy 360	9.8
Copper, electrolytic (ETP)	3.9
Yellow brass (high brass)	22.3
Aluminum bronze	0.7
Beryllium		218
Beryllium Copper 25	1.20.8
Cupronickel 30%	0.3
Red brass, 85%	1.6
Brass		109
Antimonial lead (hard lead)	0.35
Solder 50-50	0.5
Magnesium alloy AZ31B	1.0
Lead		35.3
Silver		429
Monel	0.3
Gold		318
Nickel (commercial)	0.9
Cupronickel 55-45 (constantan)	0.2
Titanium (commercial)	1.8
Zinc (commercial)	1.1
Zirconium (commercial)	0.2
Cement		0.29
Epoxy (Silica-Filled)		0.30
Rubber		0.16
Epoxt (unfilled)		0.59
Thermal Grease		0.8 - 3
Thermal Epoxy		1 - 7
Glass		1.1
Soil		1.5
Sandstone		2.4
Diamond		900-2320
Asphalt		0.75
Balsa		0.048
Nickel Chrome Steel		16.4
Corian		1.06
Fiberglass		0.04
Granite		1.65 - 3.9
Styrofoam		0.032
Urethane foam		0.02
Iridium		147
Hardwoods (oak, maple..)		0.16

Thermal Conductivities of Metals

k = Btu / h · ft · °F
k_t = k_to - a ( t - t_o)

Substance	Temp range, °F	kto	a	Substance	Temp range, °F	kto	a
Metals				Tin	60 – 212	36	0.0135
Aluminum	70 – 700	130	0.03	Titanium	70 – 570	9	0.001
Antimony	70 – 212	10.6	0.006	Tungsten	70 – 570	92	0.02
Beryllium	70 – 700	80	0.027	Uranium	70 – 770	14	-0.007
Cadmium	60 – 212	53.7	0.01	Vanadium	70	20	—
Cobalt	70	28	—	Zinc	60 – 212	65	0.007
Copper	70 – 700	232	0.032	Zirconium	32	11	—
Germanium	70	34	—	Alloys:
Gold	60 – 212	196	—	Admiralty metal	68 – 460	58.1	-0.054
Iron, pure	70 – 700	41.5	0.025	Brass	-265 – 360	61.0	-0.066
Iron, wrought	60 – 212	34.9	0.002	(70% Cu, 30% Zn)	360 – 810	84.6	0
Steel (1% C)	60 – 212	26.2	0.002	Bronze, 7.5% Sn	130 – 460	34.4	-0.042
Lead	32 – 500	20.3	0.006	7.7% Al	68 – 392	39.1	-0.038
Magnesium	32 – 370	99	0.015	Constantan	-350 – 212	12.7	-0.0076
Mercury	32	4.8	—	(60% Cu, 40% Ni)	212 – 950	10.1	-0.019
Molybdenum	32 – 800	79	0.016	Dural 24S (93.6% Al, 4.4% Cu,	-321 – 550	63.8	-0.083
Nickel	70 – 560	36	0.0175	1.5% Mg, 0.5% Mn)	550 – 800	130.	-0.038
Palladium	70	39	—	Inconel X (73% Ni, 15% Cr, 7%	27 – 1,070	7.62	-0.0068
Platinum	70 – 800	41	0.0014	Fe, 2.5% Ti)
Plutonium	70	5	—	Manganin (84% Cu, 12% Mn,	1,070 – 1,650	3.35	-0.0111
Rhodium	70	88	—	4% Ni)	-256 – 212	11.5	-0.015
Silver	70 – 600	242	0.058	Monel (67.1% Ni, 29.2% Cu, 1.7% Fe, 1.0% Mn)	-415 – 1,470	12.0	-0.008
Tantalum	212	32	—
Thallium	32	29	—	Nickel silver (64% Cu, 17% Zn, 18% Ni)	68 – 390	18.1	-0.0156
Thorium	70 – 570	17	-0.0045

Related:

• Thermal Conductivity, Heat Transfer - Engineers Edge
• Insulation Material Thermal Conductivity Chart
• Thermal Conductivity of Gases Chart
• Thermal Properties of Metals, Conductivity, Thermal Expansion, Specific Heat

References:

• ASM Metals Reference Book, Second Edition, American Society for Metals, Metals Park, OH, 1983.
• Lynch, C. T., CRC Practical Handbook of Materials Science, CRC Press, Boca Raton, FL, 1989.
• Shackelford, J. F., and Alexander, W., CRC Materials Science and Engineering Handbook, CRC Press, Boca Raton, FL, 1991.