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Meehanite Flake Graphite Type GC-40 Cast Iron   Subcategory: Gray Cast Iron; Metal Material Notes: Type GC-40 combines good strength with low coefficient of friction and self lubricating properties. It is easily machinable with a fine, dense, close grain structure. Recommended for heavy brake drums and pressure castings up to 2 1/2" thick. General Meehanite information - Meehanite metal is first melted to a definite degree of undercooling or constitution which is related to the section of the casting to be poured and the range of physical properties such as tensile strength and hardness required. Nucleation with patented mixtures of graphitizing agents results in the removal of undercooling, in the controlled precipitation of graphite and in a fine grained eutectic cell structure which determines the density and physical integrity of the casting. Ordinary cast irons made to chemical specifications which do not include the benefit of controlled undercooling are influenced by mass effect to a maximum degree and for this and other reasons cannot be considered an equivalent to Meehanite metal. Information provided by Meehanite Marketing Association. Available Properties Specific Gravity Hardness, Brinell Tensile Strength, Ultimate Tensile Strength, Yield Modulus of Elasticity Modulus of Rupture Compressive Strength Poissons Ratio Izod Impact Unnotched Fatigue Strength Machinability Shear Modulus Shear Strength CTE, linear 68°F Thermal Conductivity Shrinkage    Property Data This page displays only the text of a material data sheet. To see MatWeb's complete data sheet for this material (including material property data, metal compositions, material suppliers, etc), please click the button below.

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