MODULUS OF ELASTICITY FOR METALS



Modulus of elasticity (or also referred to as Young’s modulus) is the ratio of stress to strain in elastic range of deformation. For typical metals, modulus of elasticity is in the range between 45 GPa (6.5 x 106 psi) to 407 GPa (59 x 106 psi). Modulus of elasticity is also a measure of material's stiffness or resistance to elastic deformation. If the Young modulus of metal is greater, it's stiffer. Modulus of elasticity is an important design factor for metals for calculations of elastic deflections.

Room temperature modulus of elasticity values for some of the aluminum alloys, copper alloys, cast irons, various non-ferrous metals, steel alloys and titanium alloys are given in the following chart.

Modulus of Elasticity Values for Metals
Aluminum Alloys
Metal Modulus of Elasticity
GPa 106 psi 
Aluminum Alloy 1100 69 10
Aluminum Alloy 2024 72.4 10.5
 Aluminum Alloy 6061 69 10
 Aluminum Alloy 7075 71 10.3
Aluminum Alloy 356.0 72.4 10.5
Copper Alloys
Metal Modulus of Elasticity
GPa 106 psi
Copper Alloy C11000 (electrolytic tough pitch) 115 16.7
Copper Alloy C17200 (beryllium - copper) 128 18.6
Copper Alloy C22000 (Commercial bronze, 90%) 115 16.7
Copper Alloy C26000 (cartridge brass) 110 16
Copper Alloy C36000 (free - cutting brass) 97 14
Copper Alloy C71500 (copper - nickel, 30%) 150 21.8
Copper Alloy C93200 (bearing bronze) 100 14.5
 Cast Iron
Metal Modulus of Elasticity
GPa 106 psi
Gray Irons
Grade G1800 66 - 97 * 9.6 - 14 *
Grade G3000 90 - 113 * 13.0 - 16.4 *
Grade G4000 110 - 138 * 16 - 20 *
Ductile Irons
Grade 60-40-18 169 24.5
Grade 80-55-06 168 24.4
Grade 120-90-02 164 23.8
 Various Non-ferrous Alloys
Metal Modulus of Elasticity
GPa 106 psi
Nickel 200 204 29.6
Inconel 625 207 30
Monel 400 180 26
Haynes Alloy 25 236 34.2
Invar 141 20.5
Super Invar 144 21
Kovar 207 30
Chemical Lead 13.5 2
Antimonial lead (6 %) 44.3 6.4
Tin (Commercially pure) 30 4.4
Lead - tin solder (60Sn - 40 Pb) 104.5 15.2
Zinc (Commercially pure) 99.3 14.4
 Steel Alloys
Metal Modulus of Elasticity
GPa 106 psi
Plain Carbon and Low Alloy Steels
Steel Alloy A36 207 30
Steel Alloy 1020 207 30
Steel Alloy 1040 207 30
Steel Alloy 4140 207 30
Steel Alloy 4340 207 30
Stainless Steels
Stainless Alloy 304 193 28
Stainless Alloy 316 193 28
Stainless Alloy 405 200 29
Stainless Alloy 440A 200 29
Stainless Alloy 17-7PH 204 29.5
Titanium Alloys
Metal Modulus of Elasticity
GPa 106 psi
Commercially Pure (ASTM Grade 1) 103 14.9
Titanium Alloy Ti - 5Al - 2.5Sn 110 16
Titanium Alloy Ti - 6Al - 4V 114 16.5

Note* : Secant modulus taken at 25 % of ultimate strength
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