EN-GJS-400
Cast iron with nodular graphite (ductile iron)
Ductile iron has microscopically fine, spherical graphite precipitates in the ferritic base structure with a maximum carbon content of 4 %.
The spherical geometry of the graphite inclusions is achieved by adding small amounts of magnesium, cerium or calcium.
The material properties can be modified by subsequent heat treatment, e.g. by stress-relief annealing, pearlitisation, soft annealing, etc.
| Casting type | Cast iron with nodular graphite (ductile iron) |
| Material No. | EN-JS-1020 |
| US Standard (AISI) | 60-40-18 |
| DIN EN 10027-2 | |
| Abbreviation | EN-GJS-400 |
| Old designation | GGG 40 DIN EN 1563 |
| Composition [%] | - |
| Density [g/cm³] | 7.10 |
| R0.2 N/mm² Yield point | 240 |
| 0.1 % - Yield point Rp0.1 N/mm² | - |
| Tensile strength Rm [N/mm²] | 400 |
| Brinell hardness HB30 Sample <30mm | 135 - 180 |
| Elongation at fracture A% | min 15 |
| E-modulus E KN/mm² | 169 |
| Compressive strength Sdb N/mm² | 700 |
| Machinability | very good |
| Weldability | limited, weldable with special electrodes |
| Compressive strength | - |
| Dry-running properties | good |
| Thermal conductivity | - |
| Vibration-absorbing property | - |
| Castability | very good |
| Other properties |
|
| Structure | Predominantly ferritic |
| Main applications | Coupling parts, engine construction, cam shafts, fittings, water and gas pipes, paddle wheels, nozzle rings, housings, parts for general machine construction, side clamps, latch-action clamps, push-pull toggle clamps, pull handles, clamp straps, crank handle, press stands |
Information for reference only; we do not assume any liability for its accuracy. Properties of steel materials are highly dependent on thermal and/or mechanical treatment.