Wear Metal Limit Guidelines
Wear metal limits shown here are fairly broad since typical values can vary significantly by type of service, manufacturer and even make and model. Use these as general guidelines only. Wear rates should be trended over time to determine what is typical for your application.
| Compartment |
Iron |
Chromium |
Lead |
Copper |
Tin |
Aluminum |
Nickel |
Silver |
Titanium |
Vanadium |
Manganese |
Antimony |
Cadmium |
| Engine |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Normal |
< 100 |
< 15 |
< 40 |
< 20 |
< 20 |
< 20 |
< 10 |
< 12 |
< 5 |
< 5 |
< 5 |
< 5 |
< 5 |
| Slightly High |
100-150 |
15-30 |
40-75 |
20-30 |
20-30 |
20-50 |
10-20 |
12-20 |
5-10 |
5-10 |
5-10 |
5-10 |
5-10 |
| Caution |
150-200 |
30-40 |
75-100 |
30-50 |
30-40 |
50-75 |
20-30 |
20-30 |
10-15
|
10-15
|
10-15
|
10-15
|
10-15
|
| Severe |
200-250
|
40-80 |
100-125 |
50-75 |
40-50
|
75-100 |
30-50 |
30-40 |
15-20
|
15-20
|
15-20
|
15-20
|
15-20
|
| Critical |
Over 250
|
Over 80 |
Over 125 |
Over 75 |
Over 50 |
Over 100
|
Over 50 |
Over 40 |
Over 20 (May be additive) |
Over 20
|
Over 20
|
Over 20
|
Over 20
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Compartment |
Iron |
Chromium |
Lead |
Copper |
Tin |
Aluminum |
Nickel |
Silver |
Titanium |
Vanadium |
Manganese |
Antimony |
Cadmium |
Transmission
(automatic) |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Normal |
< 100 |
< 15 |
< 75 |
< 150 |
< 15
|
< 15
|
< 10
|
< 12 |
< 5 |
< 5 |
Does not apply
|
Does not apply
|
< 5 |
| Slightly High |
100-150
|
15-30
|
75-100
|
150-250
|
15-25
|
15-50
|
10-20
|
12-20
|
5-10
|
5-10
|
|
|
5-10
|
| Caution |
150-200
|
30-50
|
100-200
|
250-300
|
25-50
|
50-75
|
20-30
|
20-30
|
10-15
|
10-15
|
|
|
10-15
|
| Severe |
200-300
|
50-75
|
200-250
|
300-400
|
50-75
|
75-100
|
30-40
|
30-40
|
15-20
|
15-20
|
|
|
15-20
|
| Critical |
Over 300
|
Over 75
|
Over 250
|
Over 400
|
Over 75
|
Over 100
|
Over 40
|
Over 40
|
Over 20
|
Over 20
(May be additive)
|
|
|
Over 20
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Compartment |
Iron |
Chromium |
Lead |
Copper |
Tin |
Aluminum |
Nickel |
Silver |
Titanium |
Vanadium |
Manganese |
Antimony |
Cadmium |
| Hydraulic |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Normal |
< 50
|
< 15
|
< 25
|
< 25
|
<15
|
<15
|
<10
|
Does not apply
|
Does not apply
|
< 5
|
Does not apply
|
Does not apply
|
< 5
|
| Slightly High |
50-75
|
15-25
|
25-50
|
25-50
|
15-25
|
15-50
|
10-20
|
|
|
5-10
|
|
|
5-10
|
| Caution |
75-150
|
25-50
|
50-75
|
50-75
|
25-75
|
50-75
|
20-30
|
|
|
10-15
|
|
|
10-15
|
| Severe |
150-250
|
50-75
|
75-100
|
75-100
|
75-100
|
75-100
|
30-40
|
|
|
15-20
|
|
|
15-20
|
| Critical |
Over 250
|
Over 75
|
Over 100
|
Over 100
|
Over 100
|
Over 100
|
Over 40
|
|
|
Over 20
|
|
|
Over 20
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Compartment |
Iron |
Chromium |
Lead |
Copper |
Tin |
Aluminum |
Nickel |
Silver |
Titanium |
Vanadium |
Manganese |
Antimony |
Cadmium |
| Gear Box |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Normal |
< 200
|
< 20
|
< 45
|
< 100
|
< 20
|
< 20
|
< 20
|
Does not apply
|
Does not apply
|
< 5
|
< 5
|
Does not apply
|
< 5
|
| Slightly High |
200-400
|
20-50
|
45-75
|
100-150
|
20-50
|
20-50
|
20-40
|
|
|
5-10
|
5-10
|
|
5-10
|
| Caution |
400-600
|
50-75
|
75-100
|
150-200
|
50-75
|
50-75
|
40-50
|
|
|
10-15
|
10-15
|
|
10-15
|
| Severe |
600-700
|
75-100
|
100-150
|
200-250
|
75-100
|
75-100
|
50-60
|
|
|
15-20
|
15-20
|
|
15-20
|
| Critical |
Over 700
|
Over 100
|
Over 150
|
Over 250
|
Over 100
|
Over 100
|
Over 60
|
|
|
Over 20
|
Over 20
|
|
Over 20
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Compartment |
Iron |
Chromium |
Lead |
Copper |
Tin |
Aluminum |
Nickel |
Silver |
Titanium |
Vanadium |
Manganese |
Antimony |
Cadmium |
| Compressor |
|
|
|
|
|
|
|
|
|
|
|
|
|
| Normal |
< 50
|
< 15
|
< 25
|
< 25
|
<15
|
< 15
|
<10
|
Does not apply
|
Does not apply
|
< 5
|
Does not apply
|
Does not apply
|
< 5
|
| Slightly High |
50-75
|
15-25
|
25-50
|
25-50
|
15-25
|
15-50
|
10-20
|
|
|
5-10
|
|
|
5-10
|
| Caution |
75-150
|
25-50
|
50-75
|
50-75
|
25-75
|
50-75
|
20-30
|
|
|
10-15
|
|
|
10-15
|
| Severe |
150-200
|
50-75
|
75-100
|
75-100
|
75-100
|
75-100
|
30-40
|
|
|
15-20
|
|
|
15-20
|
| Critical |
Over 200
|
Over 75
|
Over 100
|
Over 100
|
Over 100
|
Over 100
|
Over 40
|
|
|
Over 20
|
|
|
Over 20
|