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Meehanite GE-30 Flake Graphite Cast Iron
Categories: Metal; Ferrous Metal; Cast Iron; Gray Cast Iron

Material Notes: Type GE-30 combines improved strength and solidity with higher machining feeds and speeds than ordinary gray iron.

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.

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Physical PropertiesMetricEnglishComments
Specific Gravity 7.06 g/cc7.06 g/cc
 
Mechanical PropertiesMetricEnglishComments
Hardness, Brinell <= 160<= 160Nominal
Tensile Strength, Ultimate 207 MPa30000 psi
Tensile Strength, Yield 79.3 MPa11500 psi.01% permanent set
Modulus of Elasticity 89.6 GPa13000 ksi
Modulus of Rupture 0.421 GPa61.0 ksi
Compressive Strength 827 MPa120000 psi
Poissons Ratio 0.270.27
Fatigue Strength 93.1 MPa13500 psi
Machinability 38 %38 %Dalcher
Shear Modulus 38.3 GPa5550 ksi
Shear Strength 207 MPa30000 psi
Izod Impact Unnotched 8.13 - 16.3 J
@Diameter 20.3 mm
6.00 - 12.0 ft-lb
@Diameter 0.798 in
 
Thermal PropertiesMetricEnglishComments
CTE, linear 12.4 µm/m-°C
@Temperature 37.8 - 538 °C
6.90 µin/in-°F
@Temperature 100 - 1000 °F
Thermal Conductivity 41.8 W/m-K
@Temperature 10.0 - 232 °C
290 BTU-in/hr-ft²-°F
@Temperature 50.0 - 450 °F
Shrinkage 0.80 - 1.0 %0.80 - 1.0 %Patternmaker Shrinkage

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NMEE04 / 18225

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