Thermal shock resistance

Determination of thermal shock resistance or endurance

Glass articles that may be subjected to significant differences in temperature during their normal use should be tested for thermal shock resistance to ensure the product is fit for the intended purpose. For example, the shock of taking a casserole dish from a hot oven and placing it on a cool worktop may be enough to cause it to break.

Thermal shock testing involves the cyclic testing of a products from a hot temperature to cold temperature until failure in order to calculate the thermal shock endurance, or resistance, for that product. A number of standards are accredited under our ISO/IEC 17025 certification.

Please contact us, or make an enquiry (above), if you have any bespoke requirements, require further information or would like a quote for analysis.

For further information, please see:

Thermal Shock Methods

Testing can be provided to Glass Technology Services recommendations, client own in-house test-methods or to a range of international standards, including:

  • ASTM C149-86 Standard Test Method for Thermal Shock Resistance of Glass Containers;
  • BS EN ISO 7459 Glass containers. Thermal shock resistance and thermal shock endurance. Test methods.
  • BS EN 1183:1997 Materials and articles in contact with foodstuffs. Test methods for thermal shock and thermal shock endurance

Thermal Up-Shock In-House Test Method

A thermal up-shock in-house test method is also available on request to test resistance to shock from cold to hot temperatures as may be the case in straight to oven frozen items packaged in glass.

Glass Products Tested

Thermal shock testing is relevant for a wide range of glass products and items, examples include:

  • Bottles and jars;
  • Cookware and kitchenware;
  • Toiletry and cosmetic containers;
  • Domestic wares, such as bowls, vases, glass drinking vessels, latte glasses and mugs;
  • Cafetieres ('French Press', coffee press, сafetière à piston);
  • Candle holders, candle jars and hurricane lamps;
  • Technical, industrial and pharmaceutical glasses.

Please contact us, or make an enquiry (above), if you have any bespoke requirements, require further information or would like a quote for analysis.

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