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4130 steel test coupon for NFPA 298 corrosion and compatibility testing

NFPA 298 Corrosion & Compatibility Test Coupons

Test coupons used in NFPA 298 (Corrosion and Materials Compatibility Tests). These tests evaluate the effect of fire suppressantfoam on various metallic and non-metallic materials. Each specimen is 1" x 4" x 1/8". These specimens can be made from 2024-T3 aluminum, 4130 steel, yellow brass (C260), AZ31B magnesium, and other materials. 
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