Mate, meakene penei i te manganese, silicon, sulsphorus, combperium, chromium, te konumohe, te konupora, te niobium, te niobium, te konutai, me te aha. E ai ki te ASTM B670 tohu, iconted 718 Din 2.4668 me whai mana te kaha o te kaha, te kaha o te kaha me nga whakaritenga elonga. Hei taapiri, ko te 'alloy 718 nickel gasket rakau e hiahiatia ana kia whakahekehia te ahotea i runga i te tuhinga Astm i tuhia i konei.