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Application notes - Omega Shielding - #9

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ě®
SHIELDING
PRODUCTS
□niEGfiB1!1
METALS GALVANIC COMPATIBILITY CHART
■
GROUP
E.M.F.*
NUMBER
METALLURGICAL CATEGORY
(Volts)
1
Gold, solid and plated; Gold-platinum alloys; Wrought platinum
+0.15
2
+0.10
3
Rhodium; Graphite
+0.05
Silver, solid and plated;
4
High silver alloys
0
5
-0.05
6
-0.10
7
Nickel, solid and plated; Monel metal; High nickel-copper alloys; Titanium
-0.15
BERYLLIUM COPPER; Copper, solid and plated;
Low brasses or bronzes; Silver solder;
8
High copper-nickel alloys; nickel-chromium alloys;
-0.20
Austenitic stainless steel
9
Commercial brasses and bronzes
-0.25
High brasses and bronzes;
10
Naval brass; Muntz metal
-0.30
11
18% Chromium type corrosion-resistant steel
-0.35
12
-0.40
13
Chromium, plated; Tin, plated; 12% Chromium type corrosion-resistant steel
-0.45
14
Terneplate; Tin-lead solder
-0.50
15
Lead, solid and plated; High-lead alloys
-0.55
16
Aluminum, wrought alloys on the Duralumin type
-0.60
17
-0.65
Iron, wrought, gray and malleable; Armcon iron;
18
Plain carbon and low alloy steels
-0.70
19
Aluminum, wrought alloys other than Duralumin
type;
Aluminum, cast alloys of the silicon type
-0.75
Aluminum, cast alloys other than silicon type;
20
Cadmium, plated and chromated
-0.80
COMPATIBLE SURFACE FINISHES GOLD SILVER NICKEL BE-CU TIN SN-PB
ZINC
21
22
23
24
-0.85
-0.90
-0.95
-1.00
Zinc, wrought; Zinc, plated;
26
Zinc-base die-casting alloys
-1.10
27
28
29
30
31
32
33
34
35
-1.15
-1.20
-1.25
-1.30
-1.35
-1.40
-1.45
-1.50
-1.55
Magnesium and magnesium-based alloys,
36
Cast and wrought
-1.60
37
-1.65
38
Beryllium
-1.70
HARSH ENVIROMENT
NORMAL ENVIROMENT
OFFICE
ENVIROMENT
* Electromotive force: The force that causes movement in charge carriers (the electrons) in a conductor.
0.10 Volts Max 0.25 Volts Max
0.50 Volts Max
OMEGA SHIELDING PRODUCTS, INC. 9 Emery Avenue • Randolph, NJ 07869
Tel: 973-366-0080 • 1-800-828-5784 • Fax: 973-366-8232 http://www.omegashielding.com
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