90/10 Hardener Home 90/10 Hardener Specification Aluminum, Al <11.01 Manganese, Mn 0.5 Zinc, Zn ≤ 1.0 Silicon, Si ≤ 0.25 Copper, Cu ≤ 0.2 Nickel, Ni ≤ 0.01 Iron, Fe ≤ 0.05 Magnesium, Mg Remainder Applications R Additive used for aluminum alloying Applications R Made from post consumer scrap PRODUCTS AM50A AM60B AZ91D ZE41A 90/10 Hardener