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Bulk Modulus - Metals and Alloys

Bulk modulus of some common metals and alloys

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Bulk Modulus of Elasticity is the ratio of stress to change in volume of a material subjected to axial loading.

Material	Bulk Modulus (10⁶ psi)
Aluminum, various alloys	9.9 - 10.2
Brass, 70-30	15.7
Brass, cast	16.8
Copper	17.9
Iron, cast	8.4 - 15.5
Iron, malleable	17.2
Magnesium alloy	4.8
Monel metal	22.5
Phosphor bronze	16.3
Stainless Steels 18-8	23.6
Steel, cast	20.2
Steel, cold rolled	23.1
Steel, various	22.6 - 24.0

Bulk Modulus is related to Modulus of Elasticity and Poisson's Ratio as

K = E / 3 (1 - 2 r) (1)

where

K = Bulk Modulus

E = Modulus of Elasticity

r = Poisson's Ratio

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Material Properties - Material properties - density, heat capacity, viscosity and more - for gases, fluids and solids

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Modulus of Rigidity - Shear Modulus or Modulus of Rigidity is the coefficient of elasticity for a shearing or torsion force
Poisson's ratio - When a material is stretched in one direction it tends to get thinner in the other two directions
Young Modulus of Elasticity for Metals and Alloys - Elastic properties and Youngs modulus for common metals and alloys as cast iron, carbon steel and more

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