The characteristics of ASTM A302 are mainly reflected in its materials and applications.
First of all, from a material perspective, ASTM A302 steel plate is a manganese-molybdenum and manganese-molybdenum-nickel alloy steel plate with good mechanical properties and welding properties. Meet the safety and stability requirements of equipment in high-pressure and high-temperature environments. Has high strength and good toughness.
Secondly, ASTM A302 steel plate has good crack resistance and oxidation resistance, which makes it perform well during the welding process and can meet various complex welding needs.
Delivery status: The delivery status of ASTM A302 steel plates varies according to thickness. When the thickness of the steel plate is less than or equal to 50mm, the delivery status can be selected as hot rolling, normalizing, or normalizing + stress relief treatment. When the thickness of the steel plate is greater than 50mm, the delivery status is fixed as normalizing.
The chemical composition of ASTM A302 steel plate meets the requirements of ASTM A302/A302M standards, mainly including carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), nickel (Ni), chromium (Cr) and molybdenum (Mo) whose chemical composition differs at different thicknesses. When the thickness is less than or equal to 25mm, the carbon content should not exceed 0.20%, and the manganese content should be between 1.15% and 1.50%; when the thickness is between 25 and 50mm, the carbon content should not exceed 0.23%; and when the thickness is greater than At 50mm, the carbon content should not exceed 0.25%. In addition, the phosphorus and sulfur content should be controlled below 0.025% at all thicknesses, the silicon content should be between 0.15% and 0.40%, the molybdenum content should be between 0.45% and 0.60%, and the nickel content should be between 0.40% and 0.70%. between.
ASTM A302 has a wide range of applications and is mainly suitable for welded boilers and other pressure vessels. This steel plate is designed to withstand high pressure and high temperature environments, so it plays an important role in industries such as petroleum, chemicals, and power stations. Used to manufacture various key equipment, such as reactors, heat exchangers, storage tanks, etc. The excellent welding performance of ASTM A302 steel plate also makes it the first choice material for welding projects. It can be reliably welded with other materials to ensure the structural integrity and safety of the equipment.
