stainless steel

[Skicat]

Rarely we use stainless steel angles as brick lintels. Sometimes the contractor accidentally omits a brick ledge and we need to bolt an angle to the grade beam to carry some brick. For the ultimate in corossion resistance, we sometimes spec stainless steel angles & hardware. Can anyone point me towards some material properties for stainless steel, particularly the grade used in structural steel applications? I'm interested in Fy and Fu mostly, but am also curious if there is any affect on E. Thank you.

 

[PEinVA]

Skicat,
In the past, we typically reference ASTM A666, Type "304" - min. Fy=42ksi.

I'm not sure if that particular listing is available in a brick angle. However a few items to keep in mind.

1. Galvanic corrosion between carbon steel and stainless steel is a real problem if not isolated from each other, especially in an enviroment, where water might find a home. (ie. a lintel/brick angle).

2. E is affected by the strain in the steel. See 2 links
(1.

http://www.bssa.org.uk/topics.php?article=125

, 2.

http://www.bssa.org.uk/topics.php?article=126)

Hope this information is helpful.

Also check out

http://www.ssina.com/index2.html

(they have some helpful information)

RC
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke

 

[JoeTank]

The 42 ksi yield sounds way too high for 304 SS. i think its more like 35 ksi.

E is normally about 28,500,000 psi.

If placed in a moist environment the possibilty of a galvanic corrosion cell between CS and SS should be considered.

Joe Tank

 

[Skicat]

Thanks for your help. It sounds like it's more of a hassle than its worth to use stainless.