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The quality of ASTM A709 structural steel sheet shall not only meet the requirements of the standard, but also be higher or stricter than the product characteristics specified in the standard, including chemical composition, structure, physical properties, chemical properties and other requirements of ASTM A709 structural steel sheet buyer, such as packaging, delivery time, etc.. On the basis of the quality of ASTM A709 structural steel sheet in line with the corresponding standards, some buyers will put forward specific requirements according to their own use requirements, which is called technical agreement. That is, some specific factors should be met according to the buyer's requirements.
Cleveland cliffs, the largest ASTM A709 structural steel sheet iron ore company in North America, announced on April 13 that its Northshore mine in Minnesota and Tilden mine in Marquette County, Michigan, will suspend production based on the current market environment. The company said it would reduce inventory levels in both regions, while continuing to ASTM A709 structural steel sheet ship iron ore to its customers to meet commercial agreements.
ASTM A709 structural steel sheet, SS400 steel is one of the most commonly used hot rolled general structural steel. SS400 steel's mechanical properties is yield strength more than 225-235MPa, tensile strength 360-510Mpa and 340-470Mpa. For SS400 steel, the C element content is 0.2% max, the Mn element content is 1.40% max, the P element content is 0.045% max, the S element content is 0.045% max.
