Datasheet

46
www.lairdtech.com
47
www.lairdtech.com
EMI ESSENTIALSEMI ESSENTIALS
LEKCINREVLISMUIDOHR DLOG
1 Gold; Au-Pt alloys; wrought platinum; 0.00
graphite carbon
50.02
01.0gnitalp muidohR3
51.0syolla revlis-hgih;revliS4
02.05
52.06
7 Nickel; nickel-copper alloys; titanium, 0.30
titanium alloys; Monel
8 Beryllium copper; low brasses or bronzes; 0.35
silver solder; copper; Ni-Cr alloys; austenitic
corrosion-resistant steels; most chrome-moly steels;
specialty high-temp stainless steels
9 Commercial yellow brasses and bronzes 0.40
10 High brasses and bronzes; naval brass; Muntz metal 0.45
11 18% Cr type corrosion resistant steels; 0.50
common 300 series stainless steels
55.021
13 Chromium or tin plating; 12% Cr type corrosion 0.60
resistant steels; most 400 series stainless steels,
i.e., 410 and some cast stainless steels
56.0redlos dael-nit;etalpenreT41
07.0syolla dael-hgih;daeL51
16 Wrought 2000 series aluminum alloys 0.75
08.071
18 Wrought gray or malleable iron; plain carbon and 0.85
low-alloy steels; armco iron; cold-rolled steel
19 Wrought aluminum alloys except 2000 series cast 0.90
Al-Si alloys; 6000 series aluminum
20
Cast aluminum alloys other than Al-Si; 0.95
cadmium plating
00.112
50.122
01.132
51.142
25 Hot-dip galvanized or electrogalvanized steel 1.20
26 Wrought zinc; zinc die casting alloys 1.25
03.172
53.182
04.192
54.103
05.113
55.123
06.133
56.143
07.153
36 Wrought and cast magnesium alloys 1.75
08.173
58.1muillyreB83
COMMON METAL SURFACES
GROUP METALLURGICAL CATEGORY ANODIC
V ,XEDNIREBMUN
COMPATIBLE SURFACE FINISHES FOR LAIRD PRODUCTS
NITMUILLYREB
SMALL
SURFACE
CATHODIC
ANODIC
LARGE SURFACE
For harsh environments (presence of fair to good ionic
conductors), all metals in contact with each other should be no
more than one level of the chart apart to minimize corrosion. This
is shown by the dark blue regions of the plating bar chart under
specific platings. Outdoor applications, high humidity and salt air
fall into this category.
For normal environments (storage in warehouses or
non-temperature/humidity-controlled environments, etc.), the
difference between dissimilar metals should not exceed 0.25 volts
(5 chart levels counting the origin). This is shown by thelight blue
regions of the chart under specific platings.
For office environments (temperature and humidity controlled), 0.5
volts can be tolerated(10 chart levels counting the origin). This is
shown by the dark gray regions under specific platings. Caution
should be maintained when deciding that your application is
temperature and humidity controlled. Many devices intended for
use in office environments are storedin warehouses for extended
periods of time before and in between use.
These are general guidelines which apply under most circumstances, but
corrosion is a very complex
subject whose details could not possibly fit in
this space. If
you are not sure which metals are compatible, please feel free
to contact Laird and talk to our corrosion experts.
METALS GALVANIC COMPATIBILITY
CHART
LEKCINREVLISMUIDOHR DLOG
1 Gold; Au-Pt alloys; wrought platinum; 0.00
graphite carbon
50.02
01.0gnitalp muidohR3
51.0syolla revlis-hgih;revliS4
02.05
52.06
7 Nickel; nickel-copper alloys; titanium, 0.30
titanium alloys; Monel
8 Beryllium copper; low brasses or bronzes; 0.35
silver solder; copper; Ni-Cr alloys; austenitic
corrosion-resistant steels; most chrome-moly steels;
specialty high-temp stainless steels
9 Commercial yellow brasses and bronzes 0.40
10 High brasses and bronzes; naval brass; Muntz metal 0.45
11 18% Cr type corrosion resistant steels; 0.50
common 300 series stainless steels
55.021
13 Chromium or tin plating; 12% Cr type corrosion 0.60
resistant steels; most 400 series stainless steels,
i.e., 410 and some cast stainless steels
56.0redlos dael-nit;etalpenreT41
07.0syolla dael-hgih;daeL51
16 Wrought 2000 series aluminum alloys 0.75
08.071
18 Wrought gray or malleable iron; plain carbon and 0.85
low-alloy steels; armco iron; cold-rolled steel
19 Wrought aluminum alloys except 2000 series cast 0.90
Al-Si alloys; 6000 series aluminum
20
Cast aluminum alloys other than Al-Si; 0.95
cadmium plating
00.112
50.122
01.132
51.142
25 Hot-dip galvanized or electrogalvanized steel 1.20
26 Wrought zinc; zinc die casting alloys 1.25
03.172
53.182
04.192
54.103
05.113
55.123
06.133
56.143
07.153
36 Wrought and cast magnesium alloys 1.75
08.173
58.1muillyreB83
COMMON METAL SURFACES
GROUP METALLURGICAL CATEGORY ANODIC
V ,XEDNIREBMUN
COMPATIBLE SURFACE FINISHES FOR LAIRD PRODUCTS
NITMUILLYREB
SMALL
SURFACE
CATHODIC
ANODIC
LARGE SURFACE
For harsh environments (presence of fair to good ionic
conductors), all metals in contact with each other should be no
more than one level of the chart apart to minimize corrosion. This
is shown by the dark blue regions of the plating bar chart under
specific platings. Outdoor applications, high humidity and salt air
fall into this category.
For normal environments (storage in warehouses or
non-temperature/humidity-controlled environments, etc.), the
difference between dissimilar metals should not exceed 0.25 volts
(5 chart levels counting the origin). This is shown by thelight blue
regions of the chart under specific platings.
For office environments (temperature and humidity controlled), 0.5
volts can be tolerated(10 chart levels counting the origin). This is
shown by the dark gray regions under specific platings. Caution
should be maintained when deciding that your application is
temperature and humidity controlled. Many devices intended for
use in office environments are storedin warehouses for extended
periods of time before and in between use.
These are general guidelines which apply under most circumstances, but
corrosion is a very complex
subject whose details could not possibly fit in
this space. If
you are not sure which metals are compatible, please feel free
to contact Laird and talk to our corrosion experts.