MAT-VAC Technology, Inc. - Standard Tolerances
Standard Tolerances
1. Dimensional:
Pure metal and metal alloys
Thickness:
Length, width, diameter:
Flatness:
|
±0.005"
+0.002/-0.000"
within 0.012" |
All other targets
Thickness
Length, width, diameter
Flatness
|
±10% total thickness
(±0.015" minimum)
≤3": ±0.020"
>3": ±0.050"
within 0.012" |
2. Weight:
2.1 Standard powders
2.2 Evaporation materials
2.3 Precious metals |
±3% total weight
+1%/0% total weight of +1 unit/-0 unit
(shots, slugs, flakes, random pieces)
prices by actual weight to 0.1 gram |
3. Compositional:
|
|
best efforts by % weight of material used |
4. Purity:
| Purity (%) |
Nominal ppm |
Maximum ppm |
| Note: Metallic elements only |
99.0 |
10,000 |
15,000 |
| 99.5 |
5,000 |
7,500 |
| 99.8 |
2,000 |
3,000 |
| 99.9 |
1,000 |
1,500 |
| 99.95 |
500 |
750 |
| 99.97 |
300 |
450 |
| 99.98 |
200 |
300 |
| 99.99 |
100 |
200 |
| 99.995 |
50 |
100 |
| 99.998 |
20 |
40 |
| 99.999 |
10 |
20 |
| 99.9995 |
5 |
10 |
| 99.9999 |
1 |
2 |
|
5. Bonding:
Solder protrusions:
Solder voids:
Bond centering: |
None
<3/16" inward
<0.015" difference |
6. Visual:
Cracks
Pits and/or pullouts:
Chips:
Inclusions:
Surface finish:
Striations & sinter lines
(hot pressed materials):
Discolorations: |
None
<1/16": 1 per 4 square inches
depth: <25% target thickness
≤1/4" any direction, ≤1 per inch
≤1/64": ≤1 per 4 square inches
none, unless otherwise stated
<1/16" wide
No discoloration caused by foreign substrates |
|