Metal finishing Q&As since 1989

-----

Best steel type for galvanizing?

 

dear sir ,

i want to attain a coating of 127 microns on hot rolled steel sheets of 4 mm thickness. suggest me the steel composition (operating temperature of the zinc kettle- 445 °C and bath is prepared from special high grade zinc, and aluminium is added up to .005 percent).

S.R. Ameen
Bangalore, Karnataka, India

---

 

What mechanical properties do you want the steel to have? That will determine the type of steel you need.

Bill Reynolds [deceased]
consultant metallurgist - Ballarat, Victoria, Australia
We sadly relate the news that Bill passed away on Jan. 29, 2010.

---

Hi, S.R. Bill is of course right that the purpose of the galvanizing is to add corrosion resistance to the steel -- so the tail is sort of wagging the dog if you try to tailor the steel to the needs of the galvanizing process.

But high silicon content is known to reduce galvanizing thickness, so if you want high thickness, you want low silicon steel (see thread 776). You may also wish to see threads 18653, and 48734. Good luck.

Regards,

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
June 3, 2009