Linear thermal expansion coefficients of various steels are given in the following chart.
|
Room Temperature Linear Thermal Expansion Coefficient Values for Steels |
|
Material |
Temp. |
Coef. of Thermal Expansion (CTE) |
|
10-6 (°C)-1 |
10-6 (°F)-1 |
|
Plain Carbon and Low Alloy Steels |
|
AISI 1010, Annealed |
0-100°C / 32-212°F |
12.2 |
6.8 |
|
AISI 1020, Annealed |
0-100°C / 32-212°F |
11.7 |
6.5 |
|
AISI 1025, Annealed |
0-100°C / 32-212°F |
12.0 |
6.7 |
|
AISI 1040, Annealed |
0-100°C / 32-212°F |
11.2 |
6.2 |
|
AISI 1045, Annealed |
0-100°C / 32-212°F |
11.6 |
6.4 |
|
Alloy Steels |
|
AISI 4140, Oil Hardened, tempered |
0-100°C / 32-212°F |
12.3 |
6.8 |
|
AISI 4340, Oil Hardened, tempered 600 °C |
20-100°C / 68-212°F |
12.3 |
6.8 |
|
Stainless Steels |
|
Grade 304, Annealed |
0-100°C / 32-212°F |
17.2 |
9.6 |
|
Grade 316, Annealed |
0-100°C / 32-212°F |
15.9 |
8.8 |
|
Grade 405 |
0-100°C / 32-212°F |
10.8 |
6.00 |
|
Grade 440C |
0-100°C / 32-212°F |
10.08 |
5.60 |
|
PH 15-7 Mo,
Annealed |
21-93ºC / 70-200ºF |
14.4 |
8.0 |
|
17-4 PH, Annealed |
20°C / 68°F |
10.8 |
6.00 |
|
17-7 PH, Annealed |
21-93ºC / 70-200ºF |
15.3 |
8.5 |
|
Tool Steels |
|
D2 tool steel, Annealed |
20-100°C / 68-212°F |
10.5 |
5.81 |
|
T1 tool steel |
20-200°C / 68-390°F |
9.7 |
5.4 |
|
M2 tool steel |
20-100°C / 68-212°F |
10.1 |
5.6 |
|
W1 tool steel |
20-100°C / 68-212°F |
10.4 |
5.76 |
|
O6 tool steel, Annealed |
25-450°C / 77-842°F |
13.65 |
7.6 |