繁體中文  
aluminum casting
 
International Standard Compositions of Zinc Die-casting Alloys
Designation

No.2(%)

No.3(%)

No.4(%)

No.5(%)

No.7(%)

ZA-8(%)

ZA-12(%)

ZA-27(%)

Aluminum   (Al)

3.9-4.3

3.9-4.3

3.9-4.32

3.9-4.3

3.9-4.3

8.2-8.8

10.8-11.5

25.5-28.0

Magnesium(Mg)

0.025-0.05

0.025-0.05

0.025-0.05

0.03-0.06

0.010-0.02

0.020-0.030

0.020-0.030

0.012-0.020

Copper      (Cu)

2.6-2.9

0.10max

0.3-0.4max

0.75-1.25

0.10max

0.8-1.3

0.5-1.2

2.0-2.5

Lead           (Pb)

0.004max

0.004max

0.004max

0.004max

0.002max

0.005max

0.005max

0.005max

Cadmium   (Cd)

0.003max

0.003max

0.003max

0.003max

0.002max

0.005max

0.005max

0.005max

Tin             (Sn)

0.002max

0.002max

0.002max

0.002max

0.001max

0.002max

0.002max

0.002max

Iron            (Fe)

0.075max

0.075max

0.075max

0.075max

0.075max

0.065max

0.065max

0.072max

Nickel         (Ni)

-

-

-

-

0.005-0.020

-

-

-

Zinc            (Zn)

Balance

Balance

Balance

Balance

Balance

Balance

Balance

Balance


Physical Properties of Zinc Alloys
Designation

No.2(%)

No.3(%)

No.4(%)

No.5(%)

No.7(%)

ZA-8(%)

ZA-12(%)

ZA-27(%)

Density(g/cm)

6.6

6.6

6.6

6.6

6.6

6.3

6.0

5.0

Melting Range(C)

379-390

381-387

380-386

380-386

381-387

375-404

377-432

376-484

Electrical Conductivity(%IACS)

25

27

26-27

26

27

27.7

28.3

29.7

Thermal Conductivity(100c,W/m.k)

104.7

113

180.9-113.0

108.9

11.3

114.7

116.1

125.5

Coefficient of Thermal Expansion
(20-100c,um/mm/c)

27.8

27.4

27.4

27.4

27.4

23.3

24.2

26.0

Specific Heat(J/kg.k)

418.7

418.7

418.7

418.7

418.7

435.4

448.0

534.4

Die Shrinkage(mm/mm)

0.006

0.006

0.007

0.006

0.006

0.007

0.0075

0.008



Mechanical Properties of Zinc Alloys
Designation

No.2(%)

No.3(%)

No.4(%)

No.5(%)

No.7(%)

ZA-8(%)

ZA-12(%)

ZA-27(%)

Meehanical Properties

Die Cast

Die Cast

Die Cast

Die Cast

Die Cast

Die Cast

Sand Cast

Die Cast

Sand Cast

Die Cast

Sand Cast

Ultimate Tensile Strength(Mpa)

359

283

317

331

283

372

248-276

400

276-317

421

400-440

Impact Strength(J)

47

58

61

65

58

42

20

28

25

-

47

Elongation(%)

7

10

7

7

13

6-10

1-2

4-7

1-3

1-3

3-6

Hardness(HB)

100

82

92

91

80

95-110

80-90

95-115

90-105

105-125

110-120

Shear Strength(MPa)

317

214

214-262

262

262

275

-

275

-

296

255

Yield Strength(0.2%,MPa)

-

-

221-269

-

-

290

200

317

207

365

365

Fatigue Strength Rotary Bend
(5x10 cycle,MPa)

58.6

47.6

48-57

56.5

-

-

-

-

103.5

-

172.5

Compressive Strength
(0.1%m,MPa)

641

414

414-600

600

600

252

199

252

199

269

227


The advantages of zinc alloy die-casting mold
.Products available to higher dimensional accuracy
.Die life of up to more than 20 million times
.Can reduce the proportion of post-processing mechanism
.Suitable for mass production


Features and Benefits of zinc alloy die-casting products
.Excellent mechanical value
.Finished dimensions of high stability and accuracy good ( Up to 0.03 mm )
.With excellent surface quality, to avoid additional surface treatment program
.Thin sections of high tensile strength and excellent
.Low production costs
.Through the hot chamber casting with a high production rate
.Lower investment cost through simple production process
.Frame mode and low cost
.Flexible production speed: low speed, in general, or high-speed production rate is possible
.Excellent anti-corrosion characteristics



 
     
   
 
No.11, Alley 15, Lane 65, Dinghu 2nd St., Guishan Dist., Taoyuan City 333, Taiwan (R.O.C.)
TEL:886-3-3277676   Taiwan Die Casting  E-mail:dynamic.y1989@msa.hinet.net