RE-Strengthened Mg Alloy for Die Casting Processes: LX2701

Light weight and ultra-thin are ongoing trend of designs for laptops, phones, tablets, AR glasses and more mobile 3C products. This is the reason for selecting Magnesium (Mg) to be the mainstream materials of outer cases or internal structures. Lots of Mg-alloy products have been formed by processes of die casting, thixomolding and semisolid die-casting. 

 

AZ91D Mg alloy has been widely used as the material for producing 3C products for years, however, its fluidity and mechanical properties are not enough for ultra-thin products. Requirement of heat dissipation improvement has been emerging with rapidly upgrading performances of 3C products, but thermal conductivity is also the problem of AZ91D.

Through our experience of material technology and Mg processing technique, we launch a rare-earth-strengthened Mg alloy "LX2701," which features stronger mechanical properties and thermal conductivity than AZ91D. By selecting LX2701 as material, designers could get their products thinner and still strong to increase user experiences. 

                                                                                               

​LX2701 RE Mg alloy 

 

 

 

 

 

 

 

 

 

 

 

 


 

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​LX2701 vs. AZ91D 

Casts Information: 

  • Laptop’s D Covers

  • D Cover Size:14.5”

  • D Cover Thickness:0.58 mm 

  • Process:Semi-Solid Casting

  • Process Time:August 2017 

  • SGS Test Date:September 2017 

  • Test Standard: JIS

  • Test Model: SIMADZU  25-ton Universal Testing Machine AG-1/200KN
     

​Ingot

  • Standard Dimension

  • For Die Casting

    • Hot Chamber​

    • Cold Chamber

Pellet​

  • Standard Dimension

  • For Thixomolding

​Cylinder

  • Standard Dimension

    • ​Diameter: 90.00 ± 0.02 mm

    • Length: 300.00 ± 1.00 mm

  • For Semi-Solid Die-Casting

LX2701&AZ91D_01.jpg

LX2701

AZ91D

14.5" Laptop's D Cover formed by Semisolid Casting

LX2701

AZ91D

Tensile Strength (MPa)

232

190

Yield Strength (MPa)

197

154

Hardness

(HB)

70

63

Elongation

(%)

4

3

Density

(g/m  )

3

1.82

1.81

Young's Modulus

(GPa)

54

45

Thermal Conductivity

(W/m-k)

69

51