The heat resistance of fourteen fabric combinations, one glove material, and three face shield materials has been evaluated by controlled splashes of 1 kg of molten steel. The test procedure is described in ASTM Evaluating Heat Transfer through Materials Upon Contact with Molten Substances (F 955-85). Five- and forty-second calorimeter thermal responses were plotted. The heat resistance was determinated by measuring the temperature rise and calculating the maximum heat flux. The test materials were also visually examined.
The test materials were aluminized rayon; jacket/pant materials in wool, cotton, and wool/Cordelan; underwear materials in wool, cotton/modal, and Cordelan/polyester; Kevlar; and face shield materials in polysulfone polycarbonate and acetate.
The test results indicated <1 cal/cm2/s of maximum heat flux in six of the fabric combinations and the three face shields.
The evaluation of the fabric combinations and face shield materials to molten steel impact was a part of the project named “Development of Protective Clothing Working at Continuous Casting.”
It was concluded that the proper combination of outer clothing and underwear clothing for the “8-h garment” can be a more comfortable substitute for the combination of aluminized clothing and outer clothing used today in front coats and flame-retardent clothing.