EN-GJL-200
0.6020Grey cast iron with lamellar graphite and minimum tensile strength 200 MPa. Ferrite-pearlite matrix. Good balance of castability, machinability, and moderate strength. Excellent vibration damping. The most economical grey iron grade for general engineering. Used for machine bases, pump housings, valve bodies, pipe fittings, brake drums, and general-purpose castings. Equivalent to DIN GG20 and ASTM A48 Class 30.
Chemical composition comparison (wt%)
Side-by-side: EN-GJL-200 (EN) (typical foundry practice) vs ASTM
| Element | EN-GJL-200 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | 3–3.3% | — | — |
| Si | 1.5–2.2% | — | — |
| Mn | 0.6–0.9% | — | — |
| P | ≤ 0.15% | — | — |
| S | ≤ 0.12% | — | — |
Mechanical properties
As Cast
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 200 | MPa |
| Hardness HB | 160–210 | HB |
| Density | ≥ 7.15 | g/cm3 |
| Thermal Conductivity | ≥ 50 | W/mK |
| Elastic Modulus | 88–113 | GPa |
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