ASTM Standard F 955 – 15: Standard Test Method for Evaluating Heat Transfer through Materials for Protective Clothing Upon Contact with Molten Substances is used as the reference standard guideline to build the test jig and determine the test parameters.
Workers may be exposed to contact with molten substances. The clothing used should provide some protection.
Whether personal injury results from such contact depends on the resistance of the material from which the clothing is made to molten substance contact and the amount of heat transferred through the material to the wearer.
This test method rates materials that are intended for protective clothing against potential molten substance contact, for their thermal insulating properties and their reaction to the test exposure.
The protective performance, as determined by this test method, will relate to the actual end-use performance only to the degree that the end-use exposure is identical to the exposure used in the test method. Visual inspection of the specimen subjectively notes the material resistance to molten substance contact.
A fabric testing machine built by Secat Inc. is based on the guidelines provided by ASTM Standard F 955 – 15: Standard Test Method for Evaluating Heat Transfer through Materials for Protective Clothing Upon Contact with Molten Substances. Two copper slug calorimeters connected with thermocouples and a National Instruments Data Acquisition System were used to record the temperature variations during the test. The details are shown in Fig 1(a) through Fig 1(c).
The report published by the Aluminum Association “Resistance of Protective Fabrics to Molten Aluminum and Bath Splash and their Comfort Properties, October 2000” is used as an additional reference in determining the test machine construction parameters.