AN841 Rev 7
TABLE I. Material and finish code letters - Continued.
Material
Protective chemical
Material
code
finish 3/ 4/
Type 321 corrosion resistant steel
Passivate in accordance with
forging or bar in accordance with
R
SAE-AMS2700, type VI or VII.
SAE-AMS-QQ-S-763 or
SAE-AMS5645.
Type 7075-T73 aluminum alloy
forging in accordance with
Anodize in accordance with
SAE-AMS-QQ-A-367 or
SAE-AMS2472 or MIL-A-8625, type II,
SAE-AMS4141, or type 7075-T73
W
class 2, dye brown similar to color 10080 in
aluminum alloy bar in accordance
accordance with FED-STD-595, duplex seal
2/
with SAE-AMS-QQ-A-225/9, in
in accordance with procurement
accordance with type 7075-T7351
specification.
Aluminum alloy bar in accordance
with SAE-AMS4124.
Type 7075-T73 aluminum alloy
forging in accordance with
High purity aluminum in accordance with
SAE-AMS-QQ-A-367 or
WV
SAE-AMS4141, or type 7075-T73
MIL-DTL-83488, class 3, type II with
aluminum alloy bar in accordance
maximum coating thickness of .0005 inch.
2/
with SAE-AMS-QQ-A-225/9, in
Glass bead peen pressure shall be 25 psi
accordance with type 7075-T7351
(1.72 bar) maximum.
Aluminum alloy bar in accordance
with SAE-AMS4124.
Anodize in accordance with SAE-AMS2488,
T 3/
Titanium
type 2.
1/
Material code was dash on previous revisions, changed to agree with SAE-ARP1590.
2/
Aluminum code D is inactivated, use code W.
3/
Titanium and cadmium shall not be used in oxygen systems.
4/
Cadmium shall not be used in potable water systems.
Oxygen systems for aerospace, shipboard, and ground support equipment. Parts for use on oxygen
systems shall be identified in the PIN as code "A" and shall be furnished cleaned, packaged, and
labeled in accordance with SAE-AS611 to a process approved by the user.
4
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