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Physics > Tensile Strength

The table below shows the tensile strengths of various materials. Tensile strength is a measure of the stress at which a material deforms permanently or breaks. Tensile strength of a material can be broken up into two main definitions; Yield strength is the stress at which a material deforms permanently, essentially changing from elastic to plastic deformation. The ultimate strength is the maximum stress a material can take when exposed to pressure, tension or shearing. The table also includes a measurement of the density of the material.

Material Yield strength
(MPa)
Ultimate strength
(MPa)
Density
(g/cm³)
Structural Steel 250 400 7.8
High Density Polyethylene (HDPE) 26-33 37 0.95
Polypropylene 12-43 19.7-80 0.91
Stainless Steel 520 860  
Cast Iron 130 200  
Titanium Alloy 830 900 4.51
Copper 70 220 8.92
Cupronickel 130 350 8.94
Brass approx. 200+ 550 5.3
Tungsten   1510 19.25
Glass   50
(in compression)
2.53
Marble N/A 15  
Concrete N/A 3  
Carbon Fibre N/A 5650 1.75
Pine (parallel to grain)   40  
Bone (limb) 104-121 130 1.6
Nylon 45 75 1.15