EN-GJL-150
0.6015Grey cast iron with lamellar graphite and minimum tensile strength 150 MPa. The softest standard grey iron grade with predominantly ferritic matrix. Excellent machinability, vibration damping, and thermal conductivity. Chemical composition is not specified by EN 1561 — left to the foundry to achieve required mechanical properties. Used for electrical housings, machine tool covers, counterweights, low-stress castings, and decorative ironwork. Equivalent to DIN GG15 and ASTM A48 Class 20.
Chemical composition comparison (wt%)
Side-by-side: EN-GJL-150 (EN) (typical foundry practice) vs ASTM
| Element | EN-GJL-150 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | 3.1–3.4% | — | — |
| Si | 1.8–2.4% | — | — |
| Mn | 0.5–0.8% | — | — |
| P | ≤ 0.15% | — | — |
| S | ≤ 0.12% | — | — |
Mechanical properties
As Cast
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 150 | MPa |
| Hardness HB | 130–195 | HB |
| Density | ≥ 7.1 | g/cm3 |
| Thermal Conductivity | ≥ 52.5 | W/mK |
| Elastic Modulus | 78–103 | GPa |
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