Zinc Alloys

ZA2

ZA3

ZA5

ZA8

ACuZinc

CEN Specification

Alloy Symbol

ZnAl4Cu3-P

ZN Al4-P

ZnAl4Cu1-P

ZNAl8Cu1-P

Alloy Number

ZP0430

ZP0400

ZP0410

ZP0810

CEN Short

ZP2

ZP3

ZP5

ZP8

Designation Colour

White/Green

White/Yellow

White/Black

White/Blue

Chemical Composition

Aluminium

3.7 – 4.3

3.7 – 4.3

3.7 – 4.3

8.0 – 8.8

2.8 – 3.3

Copper

2.7 – 3.3

0.1 Max

0.7 – 1.2

0.8 – 1.3

5.0 – 6.0

Magnesium

0.025 – 0.06

0.025 – 0.06

0.025 – 0.06

0.015 – 0.06

0.025 – 0.05

Iron

0.05 Max

0.05 Max

0.05 Max

0.06 Max

0.075 Max

Silicon

0.03 Max

0.03 Max

0.03 Max

0.045 Max

Nickel

0.02 Max

0.02 Max

0.02 Max

0.02 Max

Lead

0.005 Max

0.005 Max

0.005 Max

0.006 Max

0.005 Max

Cadmium

0.005 Max

0.005 Max

0.005 Max

0.006 Max

0.004 Max

Tin

0.002 Max

0.002 Max

0.002 Max

0.003 Max

0.003 Max

Zinc

Remainder

Remainder

Remainder

Remainder

Remainder

Physical Properties

Melting Range Deg’ C

379 – 388

381 – 387

380 – 386

375 – 404

402 – 502

Density g/cm³

6.7

6.7

6.7

6.3

6.85

Coef Thermal expansion

27.4

27.4

27.4

23.3

24

Thermal Conductivity W/m C

105

113

109

115

106

Electrical Conductivity

25

27

26

27.7

26.9

Mechanical Properties

Tensile Strength

359

283

328

374

407

Yield Strength (0.2%)

270

221

228

290

338

Impact Strength

47

58

65

42

-

Elongation %

7

10

7

8

6

Shear Strength MPa

315

214

262

276

280

Brinell Hardness (500Kg)

Up To 100

Up To 82

Up To 91

Up To 103

Up To 118

Fatigue 5x10⁸ cycles MPa

58

48

56

103

Young’s Modules MPa

>85,500

>85,500

>85,500

>85,500

Poisson’s Ratio

0.27

0.27

0.27

0.29 – 0.30

Shear Modulus MPa

34,000

34,000

34,000

34,000