EN-GJS-700-2
5.3300Fully pearlitic ductile cast iron with minimum tensile strength 700 MPa and minimum elongation 2%. One of the highest strength conventional ductile iron grades. Achieved through alloying (Cu, Sn, Mn) to stabilize a fully pearlitic matrix. Used for nockenwellen (camshafts), high-stress gears, crankshafts, connecting rods, heavy-duty machine components, and automotive powertrain parts where maximum ductile iron strength is needed. Equivalent to DIN GGG70, JIS FCD700.
Chemical composition comparison (wt%)
Side-by-side: EN-GJS-700-2 (EN) (typical foundry practice) vs ASTM
| Element | EN-GJS-700-2 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | 3–3.5% | — | — |
| Si | 1.8–2.4% | — | — |
| Mn | 0.3–0.7% | — | — |
| P | ≤ 0.05% | — | — |
| S | ≤ 0.02% | — | — |
| Cu | 0.5–1% | — | — |
| Mg | 0.03–0.06% | — | — |
Mechanical properties
As Cast
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 700 | MPa |
| Yield Strength | ≥ 420 | MPa |
| Elongation | ≥ 2 | % |
| Hardness HRC | 50–55 | HRC |
| Density | ≥ 7.1 | g/cm3 |
| Elastic Modulus | ≥ 176 | GPa |
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EN-GJS-500-7
5.3200Ferritic-pearlitic ductile cast iron with minimum tensile strength 500 MPa and minimum elongation 7%. The balanced grade offering significantly higher strength than EN-GJS-400-15 while retaining reasonable ductility. Mixed ferrite-pearlite matrix (typically 40-50% pearlite). Used for crankshafts, connecting rods, suspension components, gear housings, heavy-duty pipe fittings, and medium-stress structural castings. Equivalent to DIN GGG50, JIS FCD500.
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