Special Handling of Materials [IAE]

TASK 70-11-12-500-011-A
Special Handling of Materials

ZONE: 400

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
400	POWER PLANT, NACELLES AND PYLONS

3. Job Set-up
Subtask 70-11-12-869-050-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure
Subtask 70-11-12-910-050-A ** ON A/C NOT FOR ALL

A. The Titanium Parts

CAUTION: CADMIUM WHICH STRESSED TITANIUM CAN CAUSE CRACK DEFECTS IN THE TITANIUM AT A TEMPERATURE WHICH IS BELOW THE MELT POINT OF CADMIUM, 609 DEG F (321 DEG C).

CAUTION: USE A LOT OF CARE WITH ELECTRICAL EQUIPMENT THAT IS IN THE AREA OF TITANIUM COMPONENTS. AN ELECTRICAL SOURCE THAT TOUCHES A TITANIUM COMPONENT AND TRANSMIS A CURRENT CAN CAUSE AN ARC BURN. ARC BURNS CAN RESULT IN FAILURE OF MATERIAL PROPERTIES AND CAUSE CRACKS.

(1) The bad effects can occur to the titanium part if it touches cadmium, bismuth, lead, tin, zinc, gold or silver. Tools and fixtures made from or have a coating layer of these metals must not be used on a titanium part unless it is specified to remove all remaining tool or fixture metal from the part after the work with the tool or fixture is completed.
(2) It is necessary to take care to prevent contamination of titanium parts with perspiration or salts. It is not necessary to wear gloves unless specified in the cleaning procedure.
(3) After the titanium part is cleaned and before the heat treatment of a temperature more than 450 deg.F (232.22 deg.C) the clean gloves must be used for the protection of the part when you touch, hold and move the part.
(4) If there is cadmium on a titanium part, it is necessary to remove the cadmium by the specified repair instruction.

[Rev.10 from 2021] 2026.04.01 02:19:21 UTC