MIL-DTL-17667E
4.5 Verification of performance requirements.
4.5.1 Standard test methods. The tests listed in table III shall be conducted in accordance
with the specified test methods.
TABLE III. Test methods.
Special requirement or
Tests
Test method
exception note
Basis Weight
TAPPI T410
1/
Bursting Strength
TAPPI T403
2/
Tearing Resistance
TAPPI T414
3/
Tensile Breaking Strength
TAPPI T494
Elongation (Type II only)
TAPPI T494
4/
Contact Corrosivity
MIL-STD-3010, Method
5/ 6/
3005
1/
Sample size shall be five sheets, each measuring 24 by 36 inches. Basis weight shall be
verified by extrapolation to a ream quantity.
2/
Sample size shall be six specimens. Test shall be conducted three times with material face-
up and three times face-down. All samples must meet the requirement.
3/
Sample size shall be ten specimens, five from each principal direction of the material.
4/
Test in creped direction only.
5/
The following test surface shall be used for testing and shall be exposed for 72 hours:
· Brass per ASTM-B121
· Cadmium per A-A-51126
· Copper per ASTM-B133
· Zinc per MIL-A-18001
· Aluminum per ASTM-B209
· Magnesium per SAE-AMS4375
· Nickel per ASTM-A265
6/
Light brown, purplish, pinkish, bluish or "peacocking" staining and other discoloration of the
copper panels normally associated with oxidation of copper shall not be considered cause for
final rejection of the material. In case of apparent corosion on copper panels, a sodium
azide-iodine test shall be conducted to check for the presence of sulfur bearing compounds
on the panels. A drop of freshly prepared sodium azide-iodine solution, prepared by
dissolving 1.3 g of iodine and 4 g of potassium iodide in 100 ml of water to which is added 3
g of sodium azide to the mixture, shall be placed in the test panels. An immediate and
profuse deverlopment of gas, in the form of tiny bubbles rising through the liquid, indicates a
positive test for sulfides. A magnifying glass or microscope is necessary for observing the
bubble formation. A slow steady evolution of scattered bubbles is not a positive test for
sulfides.
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