Question on A606 steel 1

[ksuengrng]

Has anyone heard of A606 Type 4 steel. I am working on a project for a client, and they are telling me the tube material is A606 Type 4. I have found nothing in ASME Section II(D), MATWEB.com, or in my Engineering Properties of Steel book.

They also said it is like C1010, and/or A570 Type 50.

Can anyone shed some light on this for me.

Thanks

 

[butelja]

I believe this steel is also known as Cor-Ten A. It is the type of steel used in structures that are not to be painted. Additional information is available at:

www.leecosteel.com/products/HSLA_Steel/ASTM_A606T4.asp