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Mike Rhodes
Land and property valuer and auctioneer
Asked a question last year

Who have higher modulus of elasticity rubber or steel

Who have higher modulus of elasticity rubber or steel?

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Steel is more elastic than a rubber. That’s why the modulus of elasticity obtained by the slope of the stress-strain curve will be higher for steel than that for rubber. It means that we can apply more force to deform the steel section, whereas in rubber after a certain load less than steel, it will deform.

Steel has a higher modulus of elasticity than a rubber. We know that Young’s modulus is the ratio of stress to the strain.

Therefore it is a property of cross-sectional area, length, and applied load.

Taking two samples of steel and rubber of the same cross-sectional area and length, if we apply the same load, the following observation can be made:

The elongation of the rubber specimen is considerably larger than that of steel. Larger deformation means the stress-strain curve of rubber has a lesser slope. Modulus of elasticity is the slope of the stress-strain curve.

This implies that the modulus of elasticity of steel is greater than that of rubber.

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Lillian Holmes
Director of Public Works

Steel has a higher modulus of elasticity than a rubber. In fact, way higher.

The value is 200 GPa for steel and way less for rubber.

Rubber is more stretchable than steel, which means that rubber has a lower modulus of elasticity anyway.

Ricardo Kuhn
Construction Foreman

Modulus of elasticity is the ration of stress and strain.

Another way modulus of elasticity is the stress required to generate unit linear strain.

It is denoted by E

Steel E =200 GPA

Rubber E= 0.01 to 0.1 GPA

1GPA= 1000 n/mm2

So we can say that steel have a higher modulus of elasticity than rubber.

Theodore Ray
Planning and development surveyor

Modulus of elasticity is defined as the ratio of stress/strain.

(Strain- change in length/original length,

Stress- force/Area)

In the case of steel, straining property is very low. Thus modulus of elasticity is higher.

Rubber elongated more than steel, which indicated it’s straining if higher.

Thus Rubber has less modulus of elasticity.

Modulus of elasticity is also called as ‘Youngs Modulus’.

Here if the matter comes about higher modulus of elasticity between rubber or steel then we can say steel is more elastic than rubber. We know that young’s modulus is the ratio of stress to the strain. Therefore, for a given stress, the strain produced in steel is much smaller than that produced in rubber. This implies that Young’s modulus for steel is greater than that for rubber.