# Coefficients of thermal expansion

This contains the linear coefficients of thermal expansion of various engineering materials.


## Metals

```
                          CTE / 10^-6 K^-1
Stainless steel 304 [1]    17.3
Cast iron (grey) [1]       12.1
Cast iron (ductile) [1]    13.5
Copper (pure) [2]          16.6
Nickel (pure) [2]          13
Tin (pure) [2]             20
Lead (pure) [2]            29
Aluminium (pure) [2]       25
```


## Polymers

```
Polyethylene [3]           108 - 200
Polyethylene (HDPE) [3]    108
Polypropylene [3]          72 - 90
Polystyrene [3]            70
ABS [3]                    72 - 108
Acrylic [3]                68 - 75
Epoxy [3]                  45 - 65
Kapton [3]                 20
Nylon 6/6 [3]              80
```

## Sources

[1] CRC Handbook of Chemistry and Physics, 64th edition, page D-186.
[2] CRC Handbook of Chemistry and Physics, 64th edition, page D-187; references CRC Handbook of Tables for Applied Engineering Science 1970.
[3] https://www.engineeringtoolbox.com/linear-expansion-coefficients-d_95.html