DIN GGG - 50 vs Nodular cast iron
Property comparison of DIN GGG - 50 and Nodular cast iron, both cast iron.
| Property | DIN GGG - 50 | Nodular cast iron | Difference |
|---|---|---|---|
| Yield strength | 320 MPa | 276 MPa | -14% |
| Tensile strength | 500 MPa | 414 MPa | -17% |
| Elastic modulus | 169,000 MPa | 159,000 MPa | -6% |
| Shear modulus | 70,000 MPa | 66,000 MPa | -6% |
| Poisson ratio | 0.2 | 0.2 | 0% |
| Density | 7,160 kg/m³ | 7,160 kg/m³ | 0% |
| Thermal conductivity | 46 W/m·K | 36 W/m·K | -22% |
| Specific heat | 460 J/kg·K | 460 J/kg·K | 0% |
| Coefficient of thermal expansion | 0.000011 1/K | 0.000011 1/K | +5% |
| Melting point | 1,175 °C | 1,150 °C | -2% |
Difference is Nodular cast iron relative to DIN GGG - 50. Values are taken from the representative row of each material; both materials may have multiple heat treatments or conditions on their individual pages.
Identification
- standard
- DIN
- standard
- ANSI
About ductile (nodular) cast iron
Ductile iron, also called nodular or spheroidal graphite iron, has graphite in spherical form rather than flakes. The microstructure gives it tensile strength and ductility much closer to steel than gray iron, while retaining cast-iron's castability. It is the standard for water and sewer pipe, pump housings, and crankshafts. ASTM A536 grades (60-40-18, 80-55-06, etc.) report tensile, yield, and elongation.
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