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Material Properties
Columns
Alloy Solidus Liquidus Density
gm/cm3
Young's
Modulus of
Elasticity
Electrical
Conductivity

1.72µohms-cm
% of IACS
Thermal
Conductivity

W•m-1•K-1
CTE
Coefficient
Thermal
Expansion
Tensile
Strength
Copper
CDA101
OFHC-101
1083°C 1083°C 8.94 115 GPa 60MΩ m 400 W/m-K 17ppm/°C 221 MPa
Beryllium Copper
Hard Temper TD05
C17200
Alloy 25
Cu 98%
Be 1.8%
Co+Ni 0.2%
-- 865°C 8.36 131 GPa 22~28 105 W/m-K 17.5ppm/°C 1100 MPa
 
 High Lead
Pb95/Sn5
Solder

UNS L54320
312°C 305°C 11.0 __ GPa 8.8 36 W/m-K 28.7ppm/°C 23 MPa
Pb90/Sn10
Solder

UNS L54520
275°C 302°C 10.5 19 GPa 8.2 36 W/m-K 27.9ppm/°C 30 MPa
Pb85/Sn15
Solder
226°C 290°C 10.4 19.5 GPa 8.5 36.5 W/m-K 27.0ppm/°C 32 MPa
Pb80/Sn20
Solder

UNS L54711
183°C 280°C 10.0 20 GPa 8.7 37 W/m-K 26.5ppm/°C 33 MPa
Pb75/Sn25
Solder

 
183°C 271°C 9.96 __ GPa __ __ W/m-K __ppm/°C __ MPa
Pb70/Sn30
Solder

UNS L54280
183°C 257°C 9.7 21 GPa 9.3 41 W/m-K 26.0ppm/°C 34 MPa
 
Eutectic and Near Eutectic
Sn60/Pb40
Solder
183°C 186°C 8.5 30 GPa 11.5 50 W/m-K 23.9ppm/°C 52 MPa
Sn63/Pb37
Solder
183°C 183°C 8.4 30 GPa 11.9 51 W/m-K 24.0ppm/°C 52 MPa
 
Lead Free
Sn96.5/Ag3.0/Cu0.5
SAC305 Solder
217°C 220°C 7.4 51 Gpa 16.6 59 W/m-K 23.5ppm/°C 50 Mpa
Au80-Sn20
Eutectic Solder
280°C 280°C 14.7 68 GPa 16.4 x 10-8Ωm 57 W/m-K 16.0ppm/°C 275 MPa
Flux Designation System
Notes:
Ambient temperature is ~25 °C.
Coefficient of thermal expansion is defined as the fractional increase in the length per unit rise in temperature.
CTE units may be expressed in units of: µm/m/°C or ppm/°C or µ-inch/in/°C.
Metric Units of GPa are gigapascals (109Pa)   •   Metric Units of MPa are megapascals (106Pa)

Data is for information only and is not guaranteed for accuracy.

Reference:Wikipedia Young's Modulus
Conversion: GPa to PSI
 
 
 
Material Properties
Metal
Alloy Thermal
Conductivity
@ 25°C
CTE
Coefficient
Thermal
Expansion
Electrical
Resistance
Specific
Gravity
Alloy 42 10.5 W/mK 5.0ppm/°C 72*10-6 Ω-cm 8.1 g/cc
Kovar 16.7 W/mK 5.9ppm/°C 49*10-6 Ω-cm 8.4 g/cc
Alloy C194
Copper
260 W/mK 9.8ppm/°C 1.7*10-6 Ω-cm 8.9 g/cc
Tungsten
W
173 W/mK 4.5ppm/°C 5.5*10-6 Ω-cm 19.3 g/cc
Molybdenum 138 W/mK 5.1ppm/°C 5.2*10-6 Ω-cm 10.2 g/cc
 
Notes:
Ambient temperature is ~25 °C.
Coefficient of thermal expansion is defined as the fractional increase in the length per unit rise in temperature.
CTE units may be expressed in units of: µm/m/°C or ppm/°C or µ-inch/in/°C.
Metric Units of GPa are gigapascals (109Pa)   •   Metric Units of MPa are megapascals (106Pa)
Data is for information only and is not guaranteed for accuracy.
 
 
 
Material Properties
Substrates
Material Density
gm/cc
Hardness Flexural
Strength
Young's
Modulus
Shear
Modulus
Surface
Finish
Thermal
Conductivity
@25°C
CTE
Coefficient
Thermal
Expansion
Volume
Resistivity
Dielectric
Constant
Dk
Dissipation
Factor
Df
HTCC Ceramic
92% Alumina
Al2O3
3.62
g/cc
1027
Kg/mm2
443
MPa
275
GPa
112
GPa
<1.14
µm
20.3
W/mk
6.6
ppm/°C
>1014
Ω-cm2/cm
9.2
εr
0.0003
δ @1MHz
 
 
Material Properties
Heatsinks
Material Density
gm/cc
Specific
Heat
Flexural
Strength
Young's
Modulus
Shear
Modulus
Thermal
Conductivity
@25°C
CTE
Coefficient
Thermal
Expansion
20~150°C
Electrical
Resistance
Al-SiC
37% Aluminum
Alloy A356.2
63% Silicon Carbide
3.01
g/cc
0.741
J/gK @25°C
488
MPa
188
GPa
76
GPa
200
W/mk Typical
8.4
ppm/°C
20.7
µΩ-cm
 
Ambient temperature is ~25 °C.
Coefficient of thermal expansion is defined as the fractional increase in the length per unit rise in temperature.
CTE units may be expressed in units of: µm/m/°C or ppm/°C or µ-inch/in/°C.
Metric Units of GPa are gigapascals (109Pa)   •   Metric Units of MPa are megapascals (106Pa)
Data is for information only and is not guaranteed for accuracy.
 
 
        
 
 
WARNING - THIS PRODUCT CONTAINS LEAD
Ingestion may cause lead poisoning. Do not breathe dust or fumes. Use NIOSH approved respiratory protection when necessary. Use only with adequate ventillation. Wash hands before eating, drinking, and smoking. Keep out of reach of children. For industrial and commercial use only. Do not re-use container. Not for use in potable water systems. See material safety data sheet for further information.
 
California Regulatory Information
California State Proposition 65
WARNING! This product contains lead, known to the state of California to cause cancer, birth defects and other reproductive harm. (California Health & Safety Code 25249.5 et seq.)
 
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