Magnesium alloy characteristics

MAGNESIUM ALLOYS, characteristics and specification.

Casts without additional heat treatment.

MECHANICAL PROPERTIES OF PRESSURE DIECAST PARTS
properties	unit	alloys
		AZ91	AM60	AM50
Ultimate Tensile Strength Rm	N/mm2	200-260	190-250	180-230
Yield strength RP 0,2	N/mm2	140-170	120-150	110-130
Elongation A	%	1-6	4-14	5-15
Hardness HB		65-85	55-70	50-65

According to the standard: mechanical properties of diecast parts, measured on samples prepared from test castings, may vary due to injection parameters. Therefore, properties listed in the table above are informational only.

PHYSICAL PROPERTIES
properties	unit	alloys
		AZ91	AM60	AM50
Density	g/cm3	1,81	1,8	1,77
THERMAL PROPERTIES
Boiling Point	°C	pure magnesium 1107 ±10
Enthalpy		pure magnesium 127 °C - 107 kJ/kg 627 °C - 709 kJ/kg 1127 °C - 7287 kJ/kg 2727 °C - 8656 kJ/kg
Heat of Combustion	MJ/kg	pure magnesium 25,1
Heat of Fusion	MJ/kg	pure magnesium 0,37 ±0,015
liquidus temperature	°C	598-599	615	624
solidus temperature (end of crystallization)	°C	470		540
Melting Point	°C	420-435	420-435	420-435
Melting Point	°C	pure magnesium 650
Specific Heat range 0-100 °C	kJ/kg-K	pure magnesium 1,047
Thermal Conductivity input 100°C	W/mK	55		74
Thermal Conductivity input 20°C	W/mK	pure magnesium 155
linear coefficient thermal expansion range -90 to +17°C 20 to 100°C	µm/mK	26,0	26,0	26,0
		pure magnesium 21,3 pure magnesium 26,0
ELECTRICAL PROPERTIES
properties	unit	alloys
		AZ91	AM60	AM50
Electrical Conductivity by 20°C	MS/m IACS	7,1 10,1%		11
		pure magnesium 22,4 38,6% IACS
Electrical Resistivity by 100°C	n Ohm-m	163		122

Source PN-EN 1753 "Magnesium and magnesium alloys" and International Magnesium Association © database
Graph and translations by Polmag.