Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

201 2

Status
Not open for further replies.

mcguire

Materials
Nov 2, 2001
1,086
US
About ten years ago I helped Manitowoc, a major US manufacturer of ice-making equipment, to convert their exterior panels to 201 with a finish rolled onto a bright-annealed surafce by a temper mill to resemble #4 polish. (Trade name,Koolline) Previously they had used 304 with a #4 polish. Today I saw one of these units outside a beach side restaurant in the Caribbean. It was under an roof, so deprived of cleansing rainwater. Despite the sea salt environment, there was no surface except some superficial staining on a leeward side.
I have seen worse corrosion inside a McDonald's in Pittsburgh. This should help people who are worried about switching to 201 from 304. I had the same experience with gasoline pumps under roofs where 304 #4 was showing rust. After changing to a bright annealed finish there was no rust. The lesson is:
Watch the surface finish, not just the alloy content. Surface finish is more important when ambient environments are concerned.
 
no wonder that the Manitowoc are such reliable machines
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Top