Materials for FORGED pistons
Cu-Aluminum Alloys for racing applications
AlCu2Mg1.5Ni
EN-AW: 2618A (EN 573-3: 2009 EN 485-2: 2008)
| USA | Japan | France | England | Poland | Rep. Ceca | NASA |
| JIS | AFNOR | BS | PN | CSN | ||
| A92618 | 2618 | 2618A | 2618A | AlCu2Mg2Ni1 | 424218 | RR58 |
Chemical composition in Pct (%) |
||||||||||
| Si | Mg | Cu | Ni | Fe | Ti | Mn | Zn | Zr+Ti | Al | |
| Min. | 0,15 | 1,2 | 1,8 | 0,8 | 1,4 | 0,20 | 0,25 | 0,15 | 0,25 | Fill |
| Max | 0,25 | 1,8 | 2,7 | 1,4 | ||||||
Physical properties
Specific weight
2.76 gr/cm3
Lowest/Highest melting point
549° - 638°C
Specific heat (a/at 100°C)
0.23 cal/gr x °C
Thermal conductivity (a/at 20°C)
0.33 cal/sec x cm x °C
Modulus of elasticity (E)
74.400 N/mm2
Heat Treatment
T6
AlSi12.5MgCuNi
4032 (EN 573-3: 2009 EN 485-2: 2008)
Chemical composition in Pct (%) |
||||||||
| Si | Mg | Cu | Ni | Fe | Zn | Cr | Al | |
| Min. | 11,00 | 0,8 | 0,5 | 0,5 | 1,0 | 0,25 | 0,1 | Fill |
| Max | 13,50 | 1,3 | 1,3 | 1,3 | ||||
Physical properties
Specific weight
2.7 gr/cm3
Lowest/Highest melting point
>532°C
Specific heat (a/at 100°C)
0.2065 cal/gr x °C
Thermal conductivity (a/at 20°C)
0.3705 cal/sec x cm x °C
Modulus of elasticity (E)
79.000 N/mm2
Heat Treatment
T6