Home Products High Performance Alloys Aluminum Silicon Alloy HYPEREUTECTIC ALUMINUM SILICON ALLOY AMC 4632 Materion’s AMC 4632 aluminum silicon alloy is a high quality hypereutectic aluminum silicon material. This alloy is manufactured by a powder metallurgy method that refines the microstructure and provides enhanced mechanical properties. ADVANTAGES OF MATERION AMC 4632 Our aluminum silicon AMC 4632 can be used as a replacement for conventional aluminum alloys such as AA4032 and AA2618 for pistons and in a range of other applications. When using this alloy to replace existing materials it can help with weight reduction and improve stability at elevated temperatures. AMC4632 may be machined to a fine surface finish and tolerances using high-speed techniques. This aluminum silicon alloy can be used in automotive applications and for aerospace components. AMC 4632 alloy has a lower coefficient of thermal expansion, allowing designs to have tighter tolerances. It offers a high tensile modulus (approximately 19% higher than aluminum alloy AA4032), good strength and excellent fatigue resistance at ambient and elevated temperatures. COMPARING PROPERTIES OF AMC 4632 & ALUMINUM 2618 Property AMC 4632 2618* Difference Product Form Forged Forged Temper T6 T61 Rp0.2 MPa (ksi) 380 (55) 370 (54) +3% Rm MPa (ksi) 430 (62) 440 (64) -2% Elastic Modulus GPa (msi) 94 (13.6) 75 (10.4) +25% Elongation % 2 10 -80% Density g/cm³ (lb/in³) 2.7 (0.097) 2.75 (0.099) -2% Thermal Conductivity W/m/K 127 146 -13% Thermal Expansion ppm/K 16.1 22 -27% Vickers Hardness Hv10kg 180 140 +29% *Aluminum 2618 data from MatWeb COMPARING PROPERTIES OF AMC 4632 & ALUMINUM 4032 Property AMC 4632 4032** Difference Product Form Forged Forged Temper T6 T6 Rp0.2 MPa (ksi) 380 (55) 315 (46) +21% Rm MPa (ksi) 430 (62) 380 (55) +13% Elastic Modulus GPa (msi) 94 (13.6) 77 (11.4) +19% Elongation % 2 9 -78% Density g/cm³ (lb/in³) 2.7 (0.097) 2.68 (0.097) +1% Thermal Conductivity W/m/K 127 138 -13% Thermal Expansion ppm/K 16.1 20.2 -20% Vickers Hardness Hv10kg 180 137 +31% **Aluminum 4032 data from MatWeb LEARN MORE ABOUT ALLOY AMC 4632 Talk with our engineers to see if aluminum silicon alloy AMC 4632 can add strength to your application.
