Table 2 EMI shielding effectiveness of Mg-5Zn alloy in various states.

From: Effect of secondary phase on the electromagnetic shielding effectiveness of magnesium alloy

Alloys

Shielding effectiveness at 1200 MHz (dB)

Δ1

Δ2

Δ3

Solutionized

Aged (10 h)

Aged (25 h)

Aged (60 h)

5Zn-0%

68.2

73.8

77.0

81.4

5.6

8.8

13.2

5Zn-20%

76.1

77.2

83.4

84.5

1.1

7.3

8.4

5Zn-50%

79.8

81.4

82.9

84.9

1.6

3.1

5.1

  1. *Δ1 = aged (10 h)–solutionized, Δ2 = aged (25 h)–solutionized, Δ3 = aged (60 h)–solutionized.
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