[TowerTalk] Brown colored galvanized surface?

[Tim Duffy K3LR]

Hi Steve:

It is possibly COR-TEN steel.

Weathering steel, best-known under the trademark COR-TEN steel and sometimes
written without the hyphen as "Corten steel", is a group of steel alloys
which were developed to eliminate the need for painting, and form a stable
rust-like appearance if exposed to the weather for several years.

http://en.wikipedia.org/wiki/Weathering_steel


The US Steel building in Pittsburgh is made out of Cor-ten steel

http://www.dailymail.co.uk/news/article-1378258/Pittsburghs-tallest-building
-US-Steel-Tower-sold-250m.html



Back in the middle 80's my office was located at the base of WKBN-TV,
Youngstown, Ohio. A 1500 ft guyed tower made entirely of COR-TEN steel.

COR-TEN looks horrible (rusty) - but it has benefits (less maintenance).

73,
Tim K3LR

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
K7LXC at aol.com
Sent: Wednesday, September 12, 2012 3:13 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Brown colored galvanized surface?

Howdy, TowerTalkians --
 
    On lots of old galvanized towers sometimes you wind  up with a brownish 
colored surface. Can anyone tell me what it is? It's not rust  but 
something else. Just curious. Tnx.
 
Cheers,
Steve     K7LXC
 
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