EN 12844 Grade ZP5 – Premium Alloy for Pressure Castings

The material ZP5 with the material number ZP0410 is the preferred alloy for pressure castings. In its property profile, the alloy combines good mechanical properties with good resistance to corrosion, good dimensional accuracy und stability of accurate dimensions as well as with the possibility to galvanically deposit almost all metals on castings of this alloy. With observance of increased purity and of suitable processing circumstances, the material is applicable in extreme climatic conditions. The tensile strength depends on the wall thickness. With the wall thickness of the casting becoming smaller, the strength increases. The casting temperature ought to be about 425 degrees C (450 degrees C maximum) the forming temperature (pressure casting) is to be adjusted to about 180 to 250 degrees C maximum. According to DIN EN 12844, the alternating stress fatigue strength (time strength) is 56 N/mm² with 100 million reversals of stress the creep life (0.5 per cent, 3000 h) is 100 N/mm². The temperature coefficient of the length is 27 µm/m*K.

Properties

General

Property	Temperature	Value
Density	20.0 °C	6.7 g/cm³

Mechanical

Property	Temperature	Value	Comment
Bending Fatigue Strength	23.0 °C	56 MPa
Elastic modulus	20.0 °C	85 GPa
Elongation	20.0 °C	4 %
	80.0 °C	12 %
	150.0 °C	25 %

Elongation A50	20.0 °C	5 %
	23.0 °C	5 %

Hardness, Brinell	20.0 °C	90 - 92 [-]
	23.0 °C	92 [-]
	80.0 °C	65 [-]
	150.0 °C	38 [-]

Poisson's ratio	23.0 °C	0.3 [-]	Typical for Zinc Aluminium
Tensile strength	20.0 °C	300 - 330 MPa
	23.0 °C	330 MPa
	80.0 °C	240 MPa
	150.0 °C	160 MPa

Yield strength Rp0.2	20.0 °C	230 - 250 MPa
	23.0 °C	250 MPa
	80.0 °C	180 MPa
	150.0 °C	90 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	2.2E-5 - 2.8E-5 1/K	Typical for Zinc Aluminium
Melting point		375 - 485 °C	Typical for Zinc Aluminium
Specific heat capacity	23.0 °C	393 - 525 J/(kg·K)	Typical for Zinc Aluminium
Thermal conductivity	20.0 °C	110 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	1.51E+7 S/m
Electrical resistivity	20.0 °C	6.6E-8 Ω·m

Chemical properties

Property	Value
Aluminium	3.7 - 4.3 %
Cadmium	5E-3 %
Copper	0.7 - 1.2 %
Iron	0.05 %
Lead	5E-3 %
Magnesium	0.03 - 0.06 %
Nickel	0.02 %
Other	Rest Zn
Silicon	0.03 %
Tin	2E-3 %
Zinc	94.33 %

EN 12844 Grade ZP3 – Superior Ductility for Precision Pressure Castings AA Standards Grade 2117 H13 – Aluminium Alloy Specification

Metal