What is S235j2w weathering steel Plate?

S235j2w is an improved weather-resistant structural steel in accordance with EN 10025-5:2004
S235j2w adds a certain amount of alloy elements, such as P, Cu, Cr, Ni, Mo, into hot rolled steel. In order to increase the resistance to air corrosion, under the influence of climatic conditions, an automatic protection oxide is generated on the base metal.
S235j2w meaning: S is structural steel, 355 is a yield strength of 355MPa, J2 requires -20° impact, and the letter W indicates that the steel has the ability to resist atmospheric corrosion

chemical composition:

C:max 0.13Si:max 0.4Mn: 0.2 - 0.6P:max 0.035S: max 0.03Cr:0.4 - 0.8Cu:0.25 - 0.55CEV: max 0.44

Corrosion and weather resistant steel plate Production line

KUAIMA steel company has more than ten years of experience in diversified operations and multi-product transactions, involving round bar, ship plate,corrosion and weather resistant steel plate, seamless pipe, plate, coil, wire, bright bar, pipe fittings and a wide range of carbon steel, alloy steel And more product sizes of stainless steel materials, these products we produce meet national and international quality standards, such as ASTM, ASME, DIN, JIS, ISO, etc. The company has 25 production lines for various products, with an annual output of 500,000 tons, and is committed to Provide high-quality steel products and provide supporting services and solutions for global customers. Welcome to KUAIMA steel company.

Chemical composition of S235J2W weathering steel

Grade	C	And	Mn	P	S	With	Cr	CEV
S235J2W（%）	0.13	0.40	0.2-0.6	0.035	0.035	0.25-0.55	0.4-0.8	0.44

Product specification of S235j2w weathering steel Plate|G3125 weathering Steel Product

S235j2w weathering steel Plate|G3125 weathering Steel Product
Length	as your requirement
Width	0.6-3000mm or as your requirement
Thickness	3-100mm or as your requirement
Standard	AISI ASTM DIN JIS SUS
Technique	Hot Rolled
Surface Treatment	according to customer requirement
Thickness tolerance	±0.1mm
Material	09CuPCrNi-A,09CuP, 09CuPCrNiA, 09CrCuSb, Q355NH,Q460NH,Q345GNHL, Q345GNHL, Q355GNH, Q345GNH, Q295NH, Q295NH, Q295NH, Q310GNH, Q345NH, Q235NH, Q500NH, Q235GNH, Q550NH, Q265GNH, Q295GNH, Q450NQR1 S355J0W, S355J2WP, S355J2W, S235J0W, SPA-HB480GNQR
Application	High strength weathering steel has been used in bridge engineering.It can also be used in the floor board,containers, power plant chimneys, railway engineering and other outdoor steel, such as large outdoor sculpture steel.
MOQ	5TON
Shipment Time	Within 15-20 workdays after receiving deposit or L/C
Export Packing	Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit for all kinds of transport,or as required

Principle of weathering steel

After adding phosphorus, copper, chromium, nickel and other trace elements into the steel, the steel surface will form a dense and highly adhesive protective film, which will prevent the corrosion from spreading and developing inward, and protect the substrate under the rust layer to slow down its corrosion rate. About 50 μ m～100 μ The m thick amorphous spinel oxide layer is dense and has good adhesion with the base metal. Because of the existence of this dense oxide film, it prevents oxygen and water in the atmosphere from infiltrating into the steel substrate, slows down the deep development of corrosion to steel materials, and greatly improves the atmospheric corrosion resistance of steel materials. Weather-resistant steel is a steel system that can be used thinly, exposed or simply coated to make products corrosion resistant, prolong life, save labor, reduce consumption, and upgrade. It is also a steel system that can be integrated into modern metallurgical new mechanisms, new technologies, and new processes to make it sustainable development and innovation.

Features of weathering steel

It refers to low alloy structural steel with protective rust layer and atmospheric corrosion resistance, which can be used to manufacture steel structures such as vehicles, bridges, towers, containers, etc. Compared with ordinary carbon steel, weathering steel has better corrosion resistance in the atmosphere. Compared with stainless steel, weathering steel has only a small amount of alloy elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, etc. The total amount of alloy elements only accounts for a few percent, unlike stainless steel, which accounts for more than ten percent, so the price is relatively low.

Weathering steel manufacturing process

Weather-resistant steel generally adopts the process route of refined material feeding - smelting (converter, electric furnace - microalloying treatment - argon blowing - LF refining - low superheat continuous casting (feeding rare earth wire) - controlled rolling and controlled cooling. During smelting, scrap steel is added into the furnace along with the furnace charge, which is smelted according to the conventional process. After tapping, deoxidizer and alloy are added. After argon blowing, molten steel is immediately cast. The molten steel after argon blowing and temperature regulation is cast into slab by continuous casting machine. Due to the addition of rare earth elements in the steel, the weathering steel is purified and the content of inclusions is greatly reduced.

Related Products

Weathering Steel Application industry

Weathering Steel are mainly used in chemical, petrochemical, marine engineering, seawater pipelines, seawater desalination and other industries, nuclear engineering, paper and pulp industry

Corrosion and weather resistant steel plate Application industry

Corrosion and weather resistant steel plates are mainly used in chemical, petrochemical, marine engineering, seawater pipelines, seawater desalination and other industries, nuclear engineering, paper and pulp industry

We supply and export Weathering Steel in following countries

Malaysia, United Arab Emirates, Indonesia, Saudi Arabia, Iran, Qatar, India, China, United Kingdom, Singapore, Canada, Thailand, Korea, Turkey, Philippines, Egypt, Germany, Italy, Japan, Russia, Vietnam, Australia, South Africa , Portugal, Morocco, Costa Rica, Kazakhstan, Netherlands, Mexico, Brazil, France, Spain, Nigeria, Bangladesh, Kuwait, Iraq, Ukraine, Poland, Jordan, Romania, Oman, Hong Kong, Venezuela, Colombia, Norway, Chile, Te Trinidad and Tobago, Greece, Czech Republic, Belgium, Sri Lanka, Cyprus, Angola, Myanmar (Burma), United Kingdom, Canada, Korea, Thailand, Netherlands, Spain, Turkey, Australia, Mexico, Pakistan, Vietnam, Brazil, Philippines, France, Taiwan, Poland, South Africa, Russia, Nigeria, Kuwait, Czech Republic, Norway, Romania, Egypt, Oman, Sweden, Belgium, Hong Kong, Israel, Colombia, Switzerland, Denmark, Finland, Argentina, Venezuela, Peru, Ukraine , Chile, Bangladesh, Portugal, Ireland, Austria, Algeria, Greece, Iraq, New Zealand, Slovakia, Hungary, Kazakhstan, Slovenia, Lithuania, Serbia, Sri Lanka, Bahrain, Bulgaria, Morocco, Tunisia, Croatia, Jordan, Ecuador, Te Trinidad and Tobago, Estonia, Azerbaijan, Ghana, Lebanon, Cyprus, Dominican Republic, Latvia, Libya, Costa Rica, Cambodia, Macedonia (FYROM), Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan and other countries