thermal expansion

Concepts covered: Linear Thermal Expanison | Types of Expansion

Linear Thermal Expansion
The coefficient of linear thermal expansion is the ratio of the change in length per degree F (imperial) to the length.
Linear thermal expansion for some common metals can be found in the table below:


Metal

Temperature Range
(oF)

Thermal Expansion
(microinch/
(in oF))

Metal

Temperature Range
(oF)

Thermal Expansion
(microinch/(in oF))

Admiralty Brass

68 - 572

11.2

Monel

32 - 212

7.8

Aluminum

68 - 212

13.1

Nickel Wrought

77 - 212

7.4

Aluminum Bronze

68 - 572

9.0

Niobium (Columbium)

 

3.9

Antimony

 

5

Red Brass

68 - 572

10.4

Beryllium

 

6.7

Osmium

 

2.8

Beryllium Copper

68 - 212

9.3

Platinum

 

5

Bismuth

 

7.2

Plutonium

 

19.84

Cast Iron, gray

32 - 212

5.8

Potassium

 

46

Chromium

 

3.3

Rhodium

 

4.4

Cobalt

 

6.7

Selenium

 

21

Copper

68 - 572

9.8

Silicon

 

2.8

Cupronickel

68 - 572

9.0

Silver

 

11

Gold

 

7.9

Sodium

 

39

Hastelloy C

70 - 200

5.3

Tantalum

 

3.6

Inconel

68 - 212

6.4

Thorium

 

6.7

Incoloy

32 - 212

8.0

Tin

32 - 212

12.8

Iridium

 

3.3

Titanium

68 - 200

4.8

Iron, nodular pearlitic

68 - 212

6.5

Tungsten

 

2.5

Iron, pure

68 - 212

6.8

Uranium

 

7.4

Magnesium

 

14

Vanadium

 

4.4

Manganese

 

12

Wrought Carbon Steel

70 - 800

7.8

Manganese Bronze

68 - 572

11.8

Yellow Brass

68 - 572

11.3

Molybdenum

 

3.0

Zinc

 

19


  • T(oC) = 5/9[T(oF) - 32]
  • 1 in (inch) = 25.4 mm
  • 1 ft (foot) = 0.3048 m

Types of expansions

http://hyperphysics.phy-astr.gsu.edu/Hbase/thermo/imgheat/thexpan.gif

 

 

reference

http://www.engineeringtoolbox.com/thermal-expansion-metals-d_859.html
http://hyperphysics.phy-astr.gsu.edu/Hbase/thermo/thexp.html

 


 
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