Oct 31, 2025 Leave a message

JIS G 3125 SPA-C corten steel sheet anti corrosive steel coil

What is JIS G 3125 SPA-C steel plate?

SPA-C corten steel sheet is kind of atmospheric corrosion resistant hot rolled steel. The atmospheric corrosion resistance of SPA-C steel in most environments is substantially better than carbon steel with or without copper addition.

Standard of JIS G 3125 SPA-C steel plate

JIS G3125: Japanese material standard hot rolled steel for superior atmospheric corrosion resistance steel plates, sheets, strips.

Chemical composition of JIS G 3125 SPA-C steel plate

Grade

C ≤

Si

Mn

P

S ≤

Cu

Cr

Ni ≤

SPA-C

0.12

0.25~0.75

0.20~0.50

0.070~0.150

0.04

0.25~0.60

0.30~1.25

0.65

Mechanical property of JIS G 3125 SPA-C steel plate

Grade

Yield strength

Tensile strength

Elongation

SPA-C

≥ 325 MPa

≥ 450 MPa

≥ 26

Application of JIS G 3125 SPA-C steel plate

SPA-C corten steel sheet is widely used in air preheater, economizer, bridge building , construction, railway carriage, containers production and so on industry.

Names of JIS G 3125 SPA-C steel plate

SPA-C corten steel sheet, SPA-C weathering steel plate, SPA-C weatherproof steel plate, SPA-C weather resistant steel plate, SPA-C atmosphere corrosion resistant steel plate, SPA-C anti corrosion steel plate, etc.

The steel category of JIS G 3125 SPA-C steel plate

Corten steel/ whethering steel

Corten steel is a high strength weathering steel. The word "CorTen" is the trademark name given to a weathering steel alloy material originally produced by United States Steel.

Corten steel alloy falls into the category of those that were developed to reduce or eliminate the use of coats, primers or paints on the material to make it rustproof. When exposed to the environment, corten steel forms an outer rust layer that protects this steel from corrosion. This is the reason why corten steel is also called weathering steel.

Specification of JIS G 3125 SPA-C steel plate

Thickness

0.6mm-2.3mm

Width

≤ 2000mm

Length

Customized

Delivery state of JIS G 3125 SPA-C steel plate

CR / cold rolled

Equivalents of JIS G 3125 SPA-C steel plate

Warning! Only for reference


Japan

China

JIS

GB

SPA-C

05CuPCrNi

What is difference between JIS SPA-C and GB 05CuPCrNi? (SPA-C VS 05CuPCrNi)

Available shapes of JIS G 3125 SPA-C steel plate

SPA-C steel strip, SPA-C steel coil, SPA-C steel sheet, SPA-C steel plate
Cutting, bending, drilling, welding etc. deep processing are available to change shape and size.

Features of JIS G 3125 SPA-C steel plate

SPA-C corten steel sheet resists the corrosive effects of rain, snow, ice, fog, and other meteorological conditions. The surface of SPA-C corten steel sheet can form a coating of dark brown oxidation, which inhibits deeper penetration, so SPA-C corten steel sheet save the cost of need for painting and costly rust-prevention maintenance over the years.
SPA-C corten steel sheet is available in a wider variety of shapes, thickness, and dimensions.

Third party inspection of JIS G 3125 SPA-C steel plate

SGS, BV, Intertek , PMI, etc.

 

info-1972-1972

Company profile

 

Founded in 2008, Gnee (Tianjin) Supply Chain Group Co., Ltd. specializes in the global trade and processing of Corten steel products.
• We handle all kinds of Corten engineering projects, such as bridges, gardens, hotels, and facade systems.
• Compliant with ASTM, EN, and other international standards; third-party inspection supported.
• Exported to over 200 countries and regions worldwide.
• 8 subsidiaries across China and overseas, ensuring global service coverage.
Application Fields: Architecture, landscaping, gardening, cladding, and urban infrastructure.

 

 

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