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Coefficients of Thermal Expansion Chart

Material
10-6 in./in.*/°F
10-5 in./in.*/°C
High
Low
High
Low
Zinc & its Alloysc
19.3 10.8
3.5
1.9
Lead & its Alloysc
16.3 14.4
2.9
2.6
Magnesium Alloysb
16 14
2.8
2.5
Aluminum & its Alloysc
13.7 11.7
2.5
2.1
Tin & its Alloysc
13 -
2.3
-
Tin & Aluminum Brassesc
11.8 10.3
2.1
1.8
Plain & Leaded Brassesc
11.6 10
2.1
1.8
Silverc
10.9 -
2.0
-
Cr-Ni-Fe Superalloysd
10.5 9.2
1.9
1.7
Heat Resistant Alloys (cast)d
10.5 6.4
1.9
1.1
Nodular or Ductile Irons (cast)c
10.4 6.6
1.9
1.2
Stainless Steels (cast)d
10.4 6.4
1.9
1.1
Tin Bronzes (cast)c
10.3 10
1.8
1.8
Austenitic Stainless Steelsc
10.2 9
1.8
1.6
Phosphor Silicon Bronzesc
10.2 9.6
1.8
1.7
Coppersc
9.8 -
1.8
-
Nickel-Base Superalloysd
9.8 7.7
1.8
1.4
Aluminum Bronzes (cast)c
9.5 9
1.7
1.6
Cobalt-Base Superalloysd
9.4 6.8
1.7
1.2
Beryllium Copperc
9.3 -
1.7
-
Cupro-Nickels & Nickel Silversc
9.5 9
1.7
1.6
Nickel & its Alloysd
9.2 6.8
1.7
1.2
Cr-Ni-Co-Fe Superalloysd
9.1 8
1.6
1.4
Alloy Steelsd
8.6 6.3
1.5
1.1
Carbon Free-Cutting Steelsd
8.4 8.1
1.5
1.5
Alloys Steels (cast)d
8.3 8
1.5
1.4
Age Hardenable Stainless Steelsd
8.2 5.5
1.5
1.0
Goldc
7.9 -
1.4
-
High Temperature Steelsd
7.9 6.3
1.4
1.1
Ultra High Strength Steelsd
7.6 5.7
1.4
1.0
Malleable Ironsc
7.5 5.9
1.3
1.1
Titanium Carbide Cermetd
7.5 4.3
1.3
.8
Wrought Ironsc
7.4 -
1.3
-
Titanium & its Alloysd
7.1 4.9
1.3
.9
Cobaltd
6.8 -
1.2
-
Martensitic Stainless Steelsc
6.5 5.5
1.2
1.0
Nitriding Steelsd
6.5 -
1.2
-
Palladiumc
6.5 -
1.2
-
Berylliumb
6.4 -
1.1
-
Chromium Carbide Cermetc
6.3 5.8
1.1
1.0
Thoriumb
6.2 -
1.1
-
Ferritic Stainless Steelsc
6 5.8
1.1
1.0
Gray Irons (cast)c
6 -
1.1
-
Beryllium Carbided
5.8 -
1.0
-
Low Expansion Nickel Alloysc
5.5 1.5
1.0
.3
Beryllia & Thoriae
5.3 -
.9
-
Alumina Cermetsd
5.2 4.7
.9
.8
Molybdenum Disilicidec
5.1 -
.9
-
Rutheniumb
5.1 -
.9
-
Platinumc
4.9 -
.9
-
Vanadiumb
4.8 -
.9
-
Rhodiumb
4.6 -
.8
-
Tantalum Carbided
4.6 -
.8
-
Boron Nitrided
4.3 -
.8
-
Columbium & its Alloys
4.1 3.8
.7
.68
Titanium Carbided
4.1 -
.7
-
Steatitec
4 3.3
.7
.6
Tungsten Carbide Cermetc
3.9 2.5
.7
.4
Iridiumb
3.8 -
.7
-
Alumina Ceramicsc
3.7 3.1
.7
.6
Zirconium Carbided
3.7 -
.7
-
Osmium and Tantalumb
3.6 -
.6
-
Zirconium & its Alloysb
3.6 3.1
.6
.55
Hafniumb
3.4 -
.6
-
Zirconiae
3.1 -
.6
-
Molybdenum & its Alloys
3.1 2.7
.6
.5
Silicon Carbidee
2.4 2.2
.4
.39
Tungstenb
2.2 -
.4
-
Electrical Ceramicsc
2 -
.4
-
Zirconc
1.8 1.3
.3
.2
Boron Carbidee
1.7 -
.3
-
Carbon and Graphitec
1.5 1.3
.3
.2

(* or mm/mm)
aValues represent high and low sides of a range of typical values.
bValue at room temperature only.
cValue for a temperature range between room temperature and 212-750° F/100-390° C.
dValue for a temperature range between room temperature and 1000-1800° F/540-980° C.
eValue for a temperature range between room temperature and 2200-2875° F/1205-1580° C.




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