SIEGMUND Main catalogue Welding and clamping table systems Page 22
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SYSTEM MATERIALS Tool Steel X8.8 Tool Steel X8.7 Steel S355J2+N Steel S355J2+N (without Plasma nitration) With our evaluation, we would like to make it easier for you to compare the different materials and to support you in selecting the right welding table. Basic hardness Surface hardness Impact-proof Scratch-proof Protection against weld spatter Corrosion resistance Point load Flatness in its new state Maintenance of the flatness under heavy use Life span Basic hardness Premium steel S355J2+N 150 Through-hardened tool steel X8.7 200 250 Through-hardened tool steel X8.8 300 350 400 Surface hardness A high basic hardness is crucial for high impact resistance and the long service life Premium steel S355J2+N of a welding table. The subsequent plasma nitration and BAR coating results in a surface refinement that hardens the material and Through-hardened tool steel X8.7 protects it from scratches, corrosion and weld spatter adhesion. Only the combination of high basic hardness and plasma nitriding results in a low-wear and durable surface. Through-hardened tool steel X8.8 Approximate Vickers Hardness 150 022 250 350 www.siegmund.com 450 550 650 750 850 950 1050 450
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