A West Africa customer 112000pcs ASTM A36 Screw Ribbons for project West Africa Gas Pipeline (WAGP) in 2017 year. A36 carbon steel's strength, formability, and excellent welding properties make it suitable for a large variety of applications, including welding, fabricating, and bending. Our customer is satisfied with our carbon steel A36 Screw Ribbons. If you are interested in our steel machining parts, welcome to contact us.
The basic phases of EN 10025-6 S690QL equivalent, structural steel in the annealed state are ferrite and carbide. The alloy elements are dissolved in ferrite to form alloy ferrite, which depends on solid solution strengthening to increase strength and hardness, but at the same time reduce plasticity and toughness. The addition of alloying elements reduces the carbon content of the eutectoid point, which increases the proportion of pearlite in the structure and reduces the distance of the pearlite layer. This also increases the strength of the steel and reduces the plasticity.
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Tempering includes high temperature tempering, medium temperature tempering and low temperature tempering. Tempering means to reheat the EN 10025-6 S690QL equivalent quenched steel to a certain temperature and then cool it in a certain way. Tempering can reduce or eliminate the internal stress produced by quenching, reduce the hardness and strength, and improve the ductility or toughness of steel. After EN 10025-6 S690QL equivalent quenching, the workpiece should be tempered in time, and the required mechanical properties can be obtained through the combination of quenching and tempering.