Grade 660 Class A,B,C Fastener Rusted.

by ram18
Tags: class, fastener, grade, rusted
ram18 is offline
Jan11-12, 10:35 PM
P: 15
ASTM A 453 grade 660,class A,B,C and D fastener rusted in our system and now I am looking for reason why this material rusted by looking properties and High temp fasteners this is the best fastener to use as per knowledge to high strength and high temp application.We used 316SS washer with this bolt its ok or not?Some of those bolts are mixed with black oxide coating may be thats the reason to rusting those bolts.
I am not getting any conclusion on this and getting more and more confused Please help me. These fastener are used in seawater application.Any alternative for 660 bolt?
What if i do passivate these bolt and use it it give me more corrosion resistance or not?
Thanks in Advance for help.
Phys.Org News Partner Science news on
Lemurs match scent of a friend to sound of her voice
Repeated self-healing now possible in composite materials
'Heartbleed' fix may slow Web performance

Register to reply

Related Discussions
How could I call a base class virtual function from the derived class ? (C++) Programming & Computer Science 2
How often did you get a poor grade in a class despite knowing the material well? Academic Guidance 37
attempting to retrieve painted image from rusted galvanized sign Chemistry 1
Need a fastener locking mechanism for #8-32 NC screw. Mechanical Engineering 21
A seventh grade and eighth grade student problem General Math 1