(b)  
Titanium alloy shall be tested for hydrogen pickup by exposing it to the degreasing solution for 40 minutes at the maximum operating concentration and temperature to be used in production.

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(c)  
Test specimens shall be free from stress corrosion cracks.

(d)  
Degreasing solutions shall not increase the hydrogen content of titanium alloy parts by more than 20 PPM when exposed for 40 minutes minimum at the maximum operating concentration and temperature to be used in processing production parts.

(8)  Method No. 204H: Immersion Corrosion Test.
NOTE:  This test shall be performed for aqueous and semi-aqueous cleaners (which includes all alkaline and acidic solutions). This test is not necessary for purely organic solvents.
(a)  
Cleaning solutions shall be tested in accordance with ASTM F 483.

(b)  
Average weight loss is not to exceed 10 Mg.

(9)  
Method No. 204J: Effect on Painted Surfaces Test.

(a)  
Cleaning product shall be tested in accordance with ASTM F 502.

(b)  
Following testing, product shall not decrease in film hardness greater than 1 pencil and no staining.

(10)
Method No. 204K: Acrylic Crazing Test.

(a)  
Cleaning product shall be tested in accordance with ASTM F 484.

(b)  
Following testing, product shall not crack, craze, or stain acrylic.

(11)
Method No. 204L: Residue Test.

(a)  
Cleaning product shall be tested in accordance with ASTM F 485.

(b)  
Following testing, product shall leave no residue or stain.

(12)
Method No. 204M: Cleaning Prior to Fluorescent Penetrant Inspection (FPI) Test.

(a)  Ni-Cr Tapered Panels. (See Figure 201.)
1  Ni-Cr tapered test panels with crack depth range from 10 to 50 microns shall be contaminated with the following materials:
.
Machine Coolant

.
Lubrication Oil (MIL – L – 23699)

.
Farbest 7220 Antirust Oil (or other product approved in accordance with MIL

– C – 16173, Grade 3)
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2 After contamination, the panels shall be allowed to set for a minimum of 24 hours prior to cleaning (except panels coated with machine coolant shall be allowed to set for 1 to 2 hours). A panel contaminated with each soil shall be cleaned using the test cleaner and a panel contaminated with each soil shall be solvent cleaned.
3 After cleaning, the panels shall be inspected in accordance with ASTM E 1417
and the following:
.  Type I, Method A or D, Level 2, 3, or 4 sensitivity penetrant, and Form d developer.
4  Excess pentrant shall be removed with a clean, dry, lint free cloth or absorbent towel until no residual penetrant remains on the panel surface.
NOTE:  No additional processing (e.g. solvent wipe, water rinse, etc.) permitted. Panels shall be observed under suitable UV light to assure removal of excess surface penetrant.
(b)  TAM panels.
1  After contamination, the panels shall be allowed to set for a minimum of 24 hours prior to cleaning (except panels coated with machine coolant shall be allowed to set for 1 to 2 hours).
2  A panel contaminated with each soil shall be cleaned using the test cleaner and a panel contaminated with each soil shall be solvent cleaned.  After cleaning, the panels shall be inspected in accordance with ASTM E 1417 and the following:
.  Use Type I, Method A or D, Level 2, 3 or 4 sensitivity penetrant, and form (a) or (d) developer.
　
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