Effect of Boron on properties of LR grade D seafaring ship steel

Effect of Boron on properties of LR grade D seafaring ship steel

In recent years, in line with the development trend of iron and LR grade D seafaring ship steel steel industry at home and abroad, we have accelerated the transformation of development mode, promoted structural adjustment, and formed a rich product series of medium and thick plates, hot rolled steel coils, profiles, steel pipes, etc., which LR grade D seafaring ship steel are widely used in automobiles, long-span bridges, railways, machinery, ocean and so on fields. Meanwhile, we also provide deep processing for the steel materials.

S355J0 steel is a low alloy structural steel. We can supply S355J0 structural steel plates up to 400mm, with a minimum yield strength 355MPa when plate thickness less than 16mm, min. yield strength 345MPa when plate thickness range 16mm to 40mm. Without any special rolling or heat treatment for S355J0 steel plate and sheet, LR grade D seafaring ship steel, the abbreviated designation of this delivery condition shall be AR (As rolled).

NM400 alloy steel plate is a kind of wear-resistant steel plate. NM—The first letter of the Chinese pinyin 400 of the characters “resistant” and “grind” for wear resistance is the HB value of the Brinell hardness value. NM400 alloy plate is widely used in engineering machinery, mining machinery, coal mining machinery, environmental protection machinery, metallurgical machinery and other product parts. Excavator, loader, bulldozer bucket plate, blade, side blade, blade.

Oxygen is a harmful element in LR grade D seafaring ship steel steel. With the increase of oxygen content, the strength of LR grade D seafaring ship steel steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of LR grade D seafaring ship steel steel.

"A204 Grade C steel chemical composition(%)Carbon max.: 0.28 Manganese max.: 0.90Phosphorus Max.: 0.025Sulfur Max.: 0.025Silicon: 0.15-0.40Molybdenum: 0.45–0.60LR grade D seafaring ship steel, A204 Grade C steel mechanical propertiesFor boiler steel plate A204 Grade C, the yield strength shall be above 295 Mpa, tensile strength from 515 Mpa to 655 Mpa."

our company is a professional ASTM A573 Grade 70/A573 Gr.70 carbon manganese silicon steel plates steel exporter and a steel Stockist in china. We keep more than LR grade D seafaring ship steel 1000 tons ASTM A573 Grade 70/A573 Gr.70 carbon manganese silicon steel plates steel in stock every month.

With a high-quality and complete after-sales service system, the company solves the user's hindrance and improves the reliability of steel LR grade D seafaring ship steel product quality. Reaching every corner of the globe with professional services, users anywhere can get thoughtful and detailed services form us is our pursue. We promise all our steel materials are manufactured and tested in accordance with responding standards. We will take full responsibility for the quality of the steel materials we provide.

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