Major Difference Between Burst Strength & Compression Test?

When it comes to evaluating the strength of the paper of paperboard or corrugated board, both burst strength and compression tests are performed. Both tests tell manufacturers if the material has enough strength to withstand the forces during transportation, shipping, or storage. However, there are still some differences that make them distinctive from each other. In the following blog, we will highlight those differences.

Bursting Strength Test

Performed on a bursting strength tester for carton box, this test determines the ability of the material to withstand uniform pressure before it bursts or ruptures. It basically measures the material’s resistance to internal pressure, created by liquids, gases, or moving products.

During this test, a well-prepared specimen is placed on the burst strength tester and then pressure is applied via a diaphragm until the specimen bursts. The maximum pressure at which the specimen bursts is recorded as the strength of the material.

This test is performed on products like paper and paper bags, envelopes and packaging materials, that are required to contain some content.

Compression Strength Test

Performed on a box compression tester, the compression test determines the ability of the box to withstand axial load before collapsing or deforming. The compression test is also performed on core cones made of board. A core compression tester is used for that purpose.

During the test, the sample is placed and compressed between 2 plates with uniform pressure to see how much it can hold up. The maximum load at which the sample collapses is recorded as the compression strength of the product.

This test is commonly performed on packaging boxes and other products that have to bear continuous load during storage and transportation.

Key Differences Between Bursting Strength & Compression Strength Test

Both tests measure the quality, strength, and durability of the board material or box, however, based on the details provided above, the following differences can be stated between the two.

While a Bursting Strength Test evaluates the strength of the paperboard or corrugated board, the box compression tests measure the strength of the finished box made from the board. In this, the user tests the integrity and load-bearing capacity of the finished product.
The burst strength test is performed by applying vertical pressure on the material until it bursts. On the other hand, the compression test is performed by applying vertical pressure to the box, until it deforms, collapses, or changes shape.
A bursting strength is calculated using a burst strength tester or bursting strength tester for carton box. On the other hand, the compression test can be performed using two testers - a box compression tester for boxes and a core compression tester for core cones.
A burst strength tester determines the bursting strength of a material, i.e., if the material can handle internal pressure. On the other hand, a box compression tester or core compression tester determines how the material and the finished product can keep up under continuous pressure without damaging the products inside.

Wrapping Up

So, these were the differences between bursting strength and compression strength tests. To learn more about these tests or invest in their respective instruments, visit the official website of UEC today.

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