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COR-TEN AZP®
Benefits of COR-TEN AZP® Prepainted GALVALUME® Steel Sheet
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Warranted corrosion protection |
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Prepainted GALVALUME® Coated Sheet 25-year
anti-perforation |
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PVDF paint chalk, peel and fade |
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Improved solar reflectivity |
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No unsightly storm water runoff staining |
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COR-TEN AZP® is a superior alternative to COR-TEN® Steel
and other weathering steels in architectural roofing and
siding applications |
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High recycled content and total recyclability |
COR-TEN AZP® vs. COR-TEN®
Steel
| COR-TEN AZP®
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COR-TEN®
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| Prepainted GALVALUME® |
Unprotected bare steel sheet surface |
| Color matched to aged COR-TEN |
Great in thick applications such as
bridges and primary structural framing |
| Warranted
corrosion protection |
Weathering, acid rain,
abrasion and debris eat through thin-gauge sheet |
Cool roof
pigmentation
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COR-TEN® is a
registered trademark of United States Steel Corporation and
can only be used for products produced by United States Steel
Corporation or its licensees.
COR-TEN AZP® is a registered trademark of United States Steel
Corporation.
GALVALUME® is an internationally registered trademark of BIEC
International Inc. and some of its licensed partners.
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Relative Cool Roof Properties
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COR-TEN AZP®
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Aged COR-TEN®
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| Solar Reflectivity* |
.282 |
.087 |
| Thermal Emissivity* |
.855 |
.890 |
| *Test results per Oak
Ridge National Laboratories
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Why Not COR-TEN® in
Architectural Applications?
Consistent with United States Steel Corporation's
("USS") policy over the last two decades, U. S. Steel
reiterates and reminds that COR-TEN® steel sheet products
should not be sold when the intended use is for an
architectural application, such as roofing and siding. U. S. Steel has
consistently maintained this position because of the risk of
corrosion from factors beyond the control of the COR-TEN® steel
licensee (e.g. improper design, fabrication, erection and/or
maintenance).
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Reasons |
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The tight oxide skin of COR-TEN® Steel
reforms after abrasion from snow, ice, sand, dirt and
hail. |
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Acid rain also causes the skin
to reform. |
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As the skin reforms the
product actually becomes thinner and eventually will be
perforated. |
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Application |
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Special attention must be paid to the
drainage of storm water to prevent staining of
surrounding structures, sidewalks and other surfaces. |
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COR-TEN® Steel must be kept free from
debris such as leaves, pine needles, etc. These waste
products retard the wet/dry cycle necessary for COR-TEN® Steel
and corrosion is accelerated. |
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As the skin reforms, the
product actually becomes thinner and eventually will be
perforated. |
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Energy
Efficiency |
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Although COR-TEN® Steel is totally
recyclable and has a high recycled content, it has very
low solar reflectivity. |
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In other words, COR-TEN® Steel is a
hot roof, and therefore inconsistent with environmental "cool
roof" programs that aim to minimize energy
consumption, urban heat islands and pollution. |
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COR-TEN®
Steel Alternatives |
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COR-TEN AZP® Prepainted GALVALUME® Steel Sheet
duplicates the color of aged COR-TEN®. |
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Prepainted GALVALUME® provides
warranted protection against perforation for 25 years. |
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