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Electroless
Nickel plating is primarily used to provide
hard, ductile, wear-resistant, and corrosion-resistant surfaces for
operation in service up to 1000°F (40°C) and to provide uniform
build-up on complex shapes. Similar to stainless steel in color.
 Specification:
ASTM B 733
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Phosphorus
Content: |
Type-I |
No
requirement |
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Type-II |
1-3% |
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Type-III |
2-4% |
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Type-IV |
5-9% |
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Type-V |
10%
and above |
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Service
Conditions (thicknesses): |
SC-0 |
0.000004" |
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SC-1 |
0.0002" |
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SC-2 |
0.0005" |
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SC-3 |
0.001" |
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SC-4 |
0.003" |
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Post
Heat Treatment Classes: |
1 |
As-deposited,
no heat treatment |
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2 |
HT
at 26-400°C to produce 850HK100 minimum |
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3 |
HT
at 180-200°C for 2-4 hours |
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4 |
HT
at 120-130°C for at least 1 hour |
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5 |
HT
at 140-150°C for at least 1 hour |
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6 |
HT
at 300-320°C for at least 1 hour |
Specification:
AMS 2404 Electroless Nickel Plating
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Hardness
Grades: |
A |
90
knoop, maximum |
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B |
91-129
knoop, inclusive |
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C |
130-200
knoop, inclusive |
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D |
201
knoop, minimum |
Specification:
AMS 2405 Electroless Nickel Plating, Low Phosphorus
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Hardness
Grades: |
A |
90
knoop, maximum |
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B |
91-129
knoop, inclusive |
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C |
130-200
knoop, inclusive |
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D |
201
knoop, minimum |
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