ZA27
ZA27
ZA-27（ZNAL27CU2，ZP2720）
ZA-27（ZNAL27CU2，ZP2720）
ZA-27（ZNAL27CU2，ZP2720）

ZA-27（ZNAL27CU2，ZP2720）

ZA-27 is the strongest of all the ZAMAK and ZA alloys with a reported yield strength of 55 ksi.  It is also the lightest alloy available and has excellent bearing and wear performance.  Additional care is needed when casting this alloy to ensure a sound casting.  It may also need a stabilization heat treatment if tight dimensional tolerances are required.  ZA-27 is not recommended for plating.  When brute strength or wear resistant properties are needed, ZA-27 has demonstrated extraordinary performance.  This alloy along with ZA-12 must be cast in a cold chamber die casting machine due to the higher aluminum content and higher melting temperature.

Typical Mechanical Properties (Die Cast)：

Ultimate Tensile Strength(Mpa)

Yield Strength(Mpa)

Elongation:% in 2"

Hardness:Brinell

425

376

1

105 - 125

Typical Physical Properties：

Density(g/cm³)

Melting Range(°C/°F)

Electrical Conductivity:%IACS

Specific Heat(J/kg·°C)

Die Shrinkage(in/in)

5

376 - 484 (708 - 903)

29.7

450

.008

Chemical Specification:

% By weight

Ingot

Casting

Al

25.5 - 28

25 - 28

Mg

.012 -.02

.01 -.02

Cu

2.0 - 2.5

2.0 - 2.5

Fe(max)

.07

.075

Pb(max)

.005

.006

Cd(max)

.005

.006

Sn(max)

.002

.003

Ni

-

-

Zn

Balance

Balance

 

The appropriate industry：

 

Environmentally friendly die-cast zinc alloy -ZA-27# is widely used in many fields, including but not limited to:

  • Automotive manufacturing: used to manufacture the shell, valve rod and other key parts of the automotive transmission system to ensure the performance and safety of the vehicle.
  • Electronic products: In the electronics industry, Zamak 2 is often used to manufacture electronic equipment housings, plugs and other components, to protect the internal circuit from the external environment.
  • Other industrial fields: In addition, the alloy is also used in the manufacture of door locks, handles, pull rings, zippers and other hardware accessories, as well as mechanical parts, tools, etc.

 

Performance feature：

  • This product meets the standards of China, the United States and the European Union;Comply with ROHS, EN71Part3, EN1811, CPSIA and other requirements;
  • Low remelting temperature, less slag content, and fine internal crystallization;
  • Good physical and mechanical properties, castability, dimensional stability and creep resistance.

 

Method of application

  • Bake and dry before use. Do not stir or dredge when feeding.The scum above the molten liquid is stirred calmly with a slag rake to collect it and remove it;
  • The nozzle material according to the ratio of 25%-30% input, no need to slag;
  • The best die casting temperature: 525℃-580℃, the best mold temperature: 210℃-230℃.The upper limit of die-casting temperature is recommended for thin-walled parts and complex parts, and the lower limit is recommended for thick-walled parts and simple parts.
  • The following phenomena may exist in the use process: there is a thin oil film on the surface of the alloy liquid, and there will be a small amount of black film, which is a normal phenomenon.

 

Packing storage

This product is a block of silver-white metal, stacked neatly, 112 pieces per bundle , bundled with PET strap, and packaged with PVC bag.

After unpacking is not used up, it is best to re-seal, dust and reduce oxidation.

Store in ventilated, dry, non-corrosive substances place, pay attention to moisture.