What is the Young’s Modulus of Steel?

Civil Guide

The Young’s modulus of steel (also referred to as modulus of elasticity of steel) is between 190 – 210 GPa at room temperature, which is around 27500 ksi to 31200 ksi. The steel young modulus is a measure of its stiffness/ resistance elastic deformation to tensile loads.

The reason for differing values of young’s modulus of steels is due to the manufacture process, which accounts for the amount of impurities in the steel and the type/grade of steel specified.

The unit of of Young’s Modulus is usually taken as Gigapascal (GPa) which is Pascals x 109

The European standard states the young’s modulus of steel as 210,000 MPa in accordance to EN 1993-1-1 Section 3.2.6.

Carbon Steel Elastic Modulus table

Material Young's Modulus in GPa Young's Modulus in ksi
ASTM A228 210 30458
ASTM A36 200 29008
AISI 1010 205 29700
AISI 1018 205 29700
AISI 1020 205 29700
AISI 1025 190-210 27557-30458
AISI 1040 190-210 27557-30458
AISI 1045 205 29700

Stainless Steel Elastic Modulus table

Material Young's Modulus in GPa Young's Modulus in ksi
Grade 316 193 27992
Grade 405 200 29008
Grade 440C 200 29008

Young's Modulus of Steels and Common Metals

Material Young's Modulus (GPa)
Aluminum Bronze 120
Aluminum 69
Aluminum Alloys 70
Antimony 78
Beryllium (Be) 287
Beryllium Copper 124
Bismuth 32
Brass 102 - 125
Brass, Naval 100
Bronze 96 - 120
Cadmium 32
Carbon Fiber Reinforced Plastic 150
Carbon nanotube, single-walled 1000
Chromium 248
Cobalt 207
Copper 117
Diamond (C) 1220
Gold 74
Grey Cast Iron 130
Inconel 214
Iridium 517
Iron 210
Lead 13.8
Magnesium metal (Mg) 45
Manganese 159
Molybdenum (Mo) 329
Monel Metal 179
Nickel 170
Nickel Silver 128
Nickel Steel 200
Niobium (Columbium) 103
Osmium (Os) 550
Phosphor Bronze 116
Platinum 147
Rhodium 290
Sapphire 435
Silicon 130 - 185
Silicon Carbide 450
Silver 72
Steel, stainless AISI 302 180
Steel, Structural ASTM-A36 200
Tantalum 186
Thorium 59
Tin 47
Titanium Alloy 105 - 120
Tungsten (W) 400 - 410
Tungsten Carbide (WC) 450 - 650
Uranium 170
Vanadium 131
Wrought Iron 190 - 210
Zinc 83

How do we find the Modulus of elasticity of steel?

The steel elastic modulus is determined from experimental data of a tensile test on a material specimen. The tensile test applies a tensile stress, and the deformation (strain) is measured at each instance the load increases.

A stress strain curve is plotted graphically, and the steel elastic modulus is the slope of the linear elastic part of the curve. Through Hooke’s law, we can define the Young’s modulus of steel to be \(E = \sigma / \varepsilon\).

The equation above has been rearranged from this formula: \(\sigma = E. \varepsilon\).

Young's modulus of steel
Young's modulus of steel

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