Impact testing measures the energy absorbed when a sample is fractured at high velocity. An impact test is a quality control method to determine the toughness for any given material.

Our impact testing services consist of the Charpy test method to both ASTM and BS ISO Standards, and the Izod method BS 131-1.

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Charpy Impact Test

(-196°C and -120°C to ambient) BS EN ISO 148-1: ASTM A370, ASTM E23.

Charpy (V-notch) Test is a high strain-rate test that involves striking a Standardised notched sample, which is held by a set of support anvils and located using verified tongs, in a  central horizontal position to receive a controlled weight pendulum swung from a set height.

The impact test helps measure the amount of energy absorbed by the specimen during fracture to measure the materials toughness.

The test Is carried out to determine the specified mechanical properties material such as steel, stainless steel and related alloy products for their evaluation of conformance to help overcome any production issues.

Izod Impact Test

BS 131:Part 1

The Izod test is most used to determine the relative toughness or impact toughness of materials due to its fastness and cost-effectiveness to ensure quality control.

Izod test is carried out at ambient temperature with the sample impacted in a vertical orientation. A pivoting arm is raised to a set height and then released. The sample is broken by the arm swinging down and hitting the notched sample.

The v notch entered into the samples for both tests is carried out by a standardised broach.


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