GGG50 is a material with a predominantly ferritic/pearlitic base structure. It offers good tensile strength and a satisfactorily high yield point combined with good toughness. GGG50 is easily machinable and can be used up to about 450 °C.
In comparison to GGG40, this material is the ideal choice for applications where the level of wear and tear is higher, such as running wheels and wheel hubs (e.g. sweepers).
Standards / designations
| EN 1563 SYM (EU) | EN-GJS-500-7 | ||
|---|---|---|---|
| EN 1563 NR (EU) | EN-JS1050 | ||
| DIN 1693 (DE) | GGG50 | ||
| WERKSTOFFNUMMER (DE) | 0.7050 | ||
| ASTM A536-584 (US) | 88/55/06 | ||
| ALT | GGG 50, GGG-50 | ||
Mechanical properties
| Tensile strength | Rm | 500 | [N/mm2] |
|---|---|---|---|
| Yield point | σ 0.2B | 320 | [N/mm2] |
| Elongation | A | 7 | [%] |
| Brinell hardness | HB30 | 170-230 | |
| Elasticity modulus | Eo | 169 | [kN/mm2] |
| Notch impact strength at 20 °C. | Av | 3.5 | [Joule] |
| Compressive strength | σ dB | 900 | [N/mm2] |
| Shear stress | σaB | 450 | [N/mm2] |
| Ferrite content | – | 40-90 | [%] |
| Nodularity type I+II | – | min. 85 | [%] |
Chemical composition
| Carbon | C | 3.4-3.85 | [%] |
|---|---|---|---|
| Silicon | Si | 2.3-3.1 | [%] |
| Manganese | Mn | 0.1-0.3 | [%] |
| Sulphur | S | 0.02 max. | [%] |
| Phosphorus | P | 0.10 max. | [%] |
| Iron | Fe | Remainder | |
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