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weather resistant steel plate

Weather resistant steel is a low alloy steel. Different from ordinary steel, weather resistant variant steel forms a protective oxide film called ‘patina’ in a appropriate environment. This oxide layer seals the surface and reduces corrosion loss. Weather resistant steel is also referred as weathering steel in market. This type of steel is widely used in construction of bridges and other iconic and architectural structures. The famous bridges like New River Gorge bridge is made of weathering steel.

Available grades

Standard

Steel Grade

CORTEN

Corten A

Corten B

 

 

ASTM A588/A588M

A588Grade A

A588Grade B

A588Grade C

A588Grade K

ASME SA588/SA588M

SA588Grade A

SA588Grade B

SA588Grade C

SA588Grade K

EN 10025-5

S235J0W

S235J2W

S355J0WP

S355J2WP

S355J0W

S355J2W

S355K2W

 

EN 10155

S235J0W

S235J2W

S355J0WP

S355J2WP

S355J0W

S355J2G1W

S355J2G2W

S355K2G1W

S355K2G2W

 

 

 

TB/T 1979

08CuPVRE

09CuPTiRE-A

09CuPTiRE-B

09CuPCrNi-A

09CuPCrNi-B

05CuPCrNi

 

 

GB/T 4171

Q295GNH

Q355GNH

Q265GNH

Q235NH

Q310GNH

Q295NH

Q355NH

Q415NH

Q460NH

Q500NH

Q550NH

 

JIS G 3114

SMA400AW

SMA400BW

SMA400CW

SMA400AP

SMA400BP

SMA400CP

SMA490AW

SMA490BW

SMA490CW

SMA490AP

SMA490BP

SMA490CP

SMA570W

SMA570P

 

 

JIS G3125

SPA-H

SPA-C

 

 

A242/A242M

A242 Type 1

A242 Type 2

A242 Type 3

A242 Type 4

A242 Type 5

 

 

 

Restrictions on Use

Weather resistant steel is not suitable for the following environments:
where there is an atmosphere of concentrated corrosive/industrial fumes or with pollution classification above P3 to ISO 9223 (SO2 > 250 μg/m3 or 200 mg/m2 per day).
where steel-work is continuously wet or damp the protective layer does not form causing steel rusts in the same way as ordinary carbon steel.
where steel is exposed to high concentrations of chloride ions or salt spray like environment having a salinity classification greater than S2 to ISO 9223 (Cl > 300 mg/m2 per day) therefore caution is needed when considering use within 2 km of coastal line.
where the use of de-icing salt is likely to lead to substantial deposits of chloride on steel surfaces. Where salt laden water would flow directly over the steel or where salt spray from roads would settle under wide bridges when ‘tunnel-like’ conditions are created.
if steel is buried in soil or under soil.
where the headroom to steel over water is less than 2.5 m. Weather resistant steel is suitable for over bridges at standard minimum headroom of 5.3 m.

Main Steel Grades

The main products are carbon steel, wear plate, alloy steel, shipbuilding steel, hot/cold rolled steel, boiler steel, mild steel, seamless steel pipe, according to Americal standard ASTM, Japanese standard JIS, German standard DIN, EN, etc.

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