TB stadndard 09CuPCrNi-B coil size

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Quenching is a common heat treatment process. It is the metal heat treatment process in which the TB stadndard 09CUPCRNI-B metal workpiece is heated to a proper temperature and kept for a period of time, then immersed in the quenching medium for rapid cooling. Quenching can improve the strength and hardness of steel in a large range, and adjust the coordination between TB stadndard 09CUPCRNI-B strength and hardness, plasticity and toughness. Quenching is generally used as the final heat treatment.

S355J2G3 is low alloy high strength structural steel, and it is roughly equivalent to GB Q345D.S355J2G3 is a European standard steel with composition of C ≤ 0.20, Si ≤ 0.55, Mn ≤ 1.60, P ≤ 0.035, S ≤ 0.035. The meaning of J2G3 indicates that the delivery state of S355J2G3 steel is normalized, the impact energy at - 20 ℃ is 27J. G3 and G4 indicate the deoxidization mode. TB stadndard 09CUPCRNI-B, S355J2G3 steel is semi killed steel, S355J2G4 steel is fully killed steel.

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