EN 12844 Grade ZP2: Premium Aluminium Alloy for High-Strength Castings & Moulds

The material ZP2 with the material number ZP0430 is applied for sand and gravity die-castings of any kind, sheet-metal-forming tools as well as for moulds for injection-molding, deep-drawing and blowing of plastics. The alloy ZP2 is a possible alternative for the material ZP5 (ZP0410) if the strength of that material is insufficient. In the alloy family with 4 mass-per-cent aluminium, ZP2 possesses the highest strength and the best behaviour in terms of creep strength depending on time. According to DIN EN 12844, the alternating stress fatigue strength (time strength) is 60 N/mm² with 100 million reversals of stress, the creep life (0.5 per cent, 3000 h) is 130 N/mm². The temperature coefficient of the length is 27 µm/m*K.

Properties

General

Property	Temperature	Value
Density	20.0 °C	6.8 g/cm³

Mechanical

Property	Temperature	Value	Comment
Bending Fatigue Strength	23.0 °C	60 MPa
Elastic modulus	20.0 °C	85 GPa
Elongation A50	20.0 °C	5 %
	23.0 °C	5 %

Hardness, Brinell	20.0 °C	102 [-]
	23.0 °C	102 [-]

Poisson's ratio	23.0 °C	0.3 [-]	Typical for Zinc Aluminium
Tensile strength	20.0 °C	335 MPa
	23.0 °C	335 MPa

Yield strength Rp0.2	20.0 °C	270 MPa
	23.0 °C	270 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	119 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	2.7 - 3.3 %
Iron	0.05 %
Lead	5E-3 %
Magnesium	0.03 - 0.06 %
Nickel	0.02 %
Other	Rest Zn
Silicon	0.03 %
Tin	0 - 0.02 %
Zinc	92.23 %

Rhodium (Rh) Soft Annealed (+A): Premium Quality & Versatile Applications EN 12844 Grade ZP27 – Material Properties & Performance

Metal