Modulus of Elasticity, Average Properties of
Structural Materials, Shear Modulus, Poisson's Ratio, Density

Modulus of Elasticity, is the mathematical description of an object or substance's tendency to be deformed elastically (i.e., non-permanently) when a force is applied to it. The elastic modulus of an object is defined as the slope of its stress-strain curve in the elastic deformation region:

Where:

λ (lambda) = Elastic Modulus
stress = Restoring force caused due to the deformation divided by the area to which the force is applied
strain = Ratio of the change caused by the stress to the original state of the object

Material
Modulus of Elasticity, E
(lb/in2 x 106)
Shear Modulus
of Elasticity, G 
(lb/in2 x 106)
Poisson's Ratio
u
Weight Density
(lb/in3)
Aluminum Alloys
10.2
3.9
0.33
0.098
Beryllium Copper
18.0
7.0
0.29
0.30
Carbon Steel
29.0
11.5
0.29
0.28
Cast Iron
14.5
6.0
0.21
0.26
Inconel
31.0
11.5
0.29
0.31
Magnesium
6.5
2.4
0.35
0.07
Molybdenum
48.0
17.1
0.31
0.37
Monel Metal
26.0
9.5
0.32
0.32
Nickel Silver
18.5
7.0
0.32
0.32
Nickel Steel
29.0
11.0
0.29
0.28
Nylon
1.5
0.6
-
0.04
Phosphor Bronze
16.1
6.0
0.35
0.30
Stainless Steel
27.6
10.6
0.31
0.28
Titanium
16.5
6.5
-
0.16

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