Steel alloy for the aerospace industry E108

4%-Nickel-chromium-molybdenum steel for applications requiring high core strength, high toughness and for bigger dimensions. Hardness in carburized layer above 58 HRC. Service temperature max. 200°C. Non corrosion resistant. TECHNICAL SPECIFICATIONS Material Numbers Market grade S82 Standards BS S82 CHEMICAL COMPOSITION C - Si - Mn - P - S - Cr - Mo - Ni 0.14 to 0.18 - 0.15 to 0.4 - 0.25 to 0.55 - max. 0.025 - max. 0.02 - 1 to 1.4 - 0.2 to 0.3 - 3.8 to 4.3