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The chemical composition of A36 steel plate is mainly composed of iron, carbon, silicon, manganese, phosphorus, sulfur and other elements. Among them, iron is the most important component, accounting for more than 99% of the entire chemical composition. The carbon content is relatively high, generally around 0.2%, ensuring that the steel has a certain hardness and toughness. The addition of silicon, manganese and other elements enhances the strength and toughness of steel. The content of elements such as phosphorus and sulfur is low to ensure that the steel plate has good welding performance and corrosion resistance. A36 steel plate has excellent mechanical properties, and its tensile strength, yield strength, elongation and impact toughness are all higher than ordinary steel.
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S275JR steel plate,S275JR grade steel is a readily weldable low carbon manganese steel with good impact resistance. This material is commonly supplied in the untreated or normalised condition. Machinability of this material is similar to that of mild steel.EN 10025 S275 Steel is a non-alloy structural steel grade, according to EN10025, S275 mild steel is mainly devided into S275JR (1.0044), S275J0 (1.0143) and S275J2 (1.0145). Some properties of S275 mild steel is better than S235, and lower than S355.
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Steel grades are often defined using a standardized system developed by organizations such as the American Society for Testing and Materials (ASTM), the Society of Automotive Engineers (SAE), and the International Organization for Standardization (ISO). These grading systems include designations like A36, A572, or 1020, representing differences in carbon content, tensile strength, and other properties.
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S235JR, S235J0 and S235j2 steel is a structural steel grade which be used in riveted, bolted, or welded construction of bridges and buildings.235 indication of the min specified yield strength for thickness of under 16mm.
JR symbol 20 temperature impact test.
J0 symbol 0 temperature impact test.
J2 symbol -20 temperature impact test.
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