Amakhemikhali, izinto ezinjenge-manganese, i-silicon, isibabule, i-phosphorus, ithusi, i-aluminium, i-aluminium, i-chromium, i-aluminium, i-tickel, i-boron, njll. Kufanele ihambisane ne-Calletal Standard ASTM B670. Ngokusho kwe-ASTM B670 ecacisiwe, i-Incontel 718 DIN 2.4668 amapuleti abunjiwe kufanele futhi abheke amandla ashubile, amandla okuthela izidingo kanye nezidingo ezibucayi. Ngaphezu kwalokho, i-Alloy 718 nickel gasket stock iyadingeka ukuthi i-stress-ukuqhekeza ihlolwe ngokuya ngedokhumenti le-ASTM elifakwe lapha.