Mar 14, 2012 #1 renasis Mechanical Joined Dec 29, 2002 Messages 56 Location US Hello, If a screw has a Fe/Zn 5 Type III ASTM B633 plating, what does that equate to in ASTM F1941? Thanks, -ren
Hello, If a screw has a Fe/Zn 5 Type III ASTM B633 plating, what does that equate to in ASTM F1941? Thanks, -ren
Mar 15, 2012 #2 CoryPad Materials Joined Apr 15, 2002 Messages 5,192 Location US That equates to code Fe/Zn 5A, which would provide 6 hours to first appearance of white corrosion products, and 24 hours to first appearance of red corrosion products during neutral salt spray testing. Upvote 0 Downvote
That equates to code Fe/Zn 5A, which would provide 6 hours to first appearance of white corrosion products, and 24 hours to first appearance of red corrosion products during neutral salt spray testing.
Mar 15, 2012 Thread starter #3 renasis Mechanical Joined Dec 29, 2002 Messages 56 Location US CoryPad, Thanks for the response. Why wouldn't it be 5B? I believe B633 states 12 hrs before first sign of corrosion. Thanks, -ren Upvote 0 Downvote
CoryPad, Thanks for the response. Why wouldn't it be 5B? I believe B633 states 12 hrs before first sign of corrosion. Thanks, -ren
Mar 16, 2012 #4 TVP Materials Joined Apr 12, 2002 Messages 4,592 Location US 5B is a better fit than 5A, because the requirement for white corrosion would be 12 hours rather than 6. Upvote 0 Downvote
5B is a better fit than 5A, because the requirement for white corrosion would be 12 hours rather than 6.