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polished steel test specimen for UN 37.4 corrosion test

UN 37.4 Corrosion Test Specimens

Metal test specimens used for the UN TDG Part III Rev. 6 Section 37.4 corrosion test (Classification Procedures, Test Methods and Criteria Relating to Substances of Class 8). These test specimens are 20mm x 50mm x 2mm (0.787" x 1.969" x 0.079") and have a 3mm hanging hole. The specimens are made from SAE 1020 cold rolled steel or 7075-T6 bare aluminum. Each specimen is polished to 120 grit and is individually packaged. 

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