United States · ASTM

B86 AG40A

ASTM B86:2013 — Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings

Chemical composition

wt% · log scale

min – max range
typical value

Mechanical properties

value range by condition

Chemical composition

Element	min	max	Similar	Remarks
Al	3.7	4.3
Cd		0.004
Cr		0.02		Respectively
Cu		0.1		Cu content of up to 0.7 % will not adversely affect the serviceability of die castings and should not serve as a basis for rejection.
Fe		0.05
In		0.001		If required
Mg	0.02	0.06		May be as low as 0.015 % provided that the Pb
Mn		0.06		Respectively
Ni		0.02		Respectively
Pb		0.005
Si		0.035		Respectively
Sn		0.002
Tl		0.001		If required
Zn				Bal

Mechanical properties

Heat treatment / condition	Yield strength	Tensile strength	Elongation	Reduction of area	Impact energy	Hardness
die castings +F	221	283	10 Lo= 50 mm		58	HB ≤82

Physical properties

Temperature

20.0

Elastic modulus	Mean thermal expansion	Thermal conductivity	Specific heat	Resistivity	Density	Poisson's ratio
					6.60

Typical physical values

Density	Elastic modulus	Poisson's ratio	Remarks
6.70–7.10	105.00	0.27	Typical property values for zinc and zinc alloys. These values are not taken from a published standard; they are indicative only and must not be used for design.

Fatigue

Test conditions

Item	Detail
Product
Experiment	Rotary bending; T: 20°C
Specimen

Monotonic

Property	Value
Elastic modulus (GPa)	85.5
Yield strength (MPa)	221.0
Tensile strength (MPa)	283.0
Elongation (%)	10.0
Hardness (HB)	82.0

Stress life

No.	Cycles
1	5E8

Similar grades

Grade	Region	System
ZP0400	International standard	ISO
ZP3	International standard	ISO
B86 Alloy 3	United States	ASTM
YZZnAl4A	China	GB
B86 Zamak 3	United States	ASTM
903	United States	SAE