S355J2 is a low-alloy high-strength steel, which can be treated to meet the requirements of Z-15, Z-25, Z-35 and level I, level II and level III flaw detection.The extension grades of S355J2 are S355J2, S355J2-Z35 and S355J2 + N-Z35, A633 Grade D metal st
S355J2 is a low-alloy high-strength steel, which can be treated to meet the requirements of Z-15, Z-25, Z-35 and level I, level II and level III flaw detection.The extension grades of S355J2 are S355J2, S355J2-Z35 and S355J2 + N-Z35, A633 Grade D metal steel carbon-manganese-silicon steel grade. On the basis of S355J2, S355J2-Z35 increases the requirement of S355J2 steel plate thickness direction performance, namely Z-direction performance. S355J2 + N-Z35 is a heat treatment process which increases Z-direction properties and normalizing rolling (or normalizing).
40Cr steel plate is one of the most widely used steel in machinery manufacturing. After tempering, it has good comprehensive mechanical properties, good low temperature impact toughness and low notch sensitivity. The hardenability of steel A633 Grade D metal steel carbon-manganese-silicon steel grade is good. It can be hardened to Ф28 ～ 60mm during water quenching and Ф15～40mm during oil quenching. When the hardness is HB174～229, the relative cutting workability is 60%. The steel is suitable for making medium-sized plastic molds.
TMCP process is an indispensable technology for our production of low alloy high strength wide and A633 Grade D metal steel carbon-manganese-silicon steel grade thick steel plates. TMCP process can produce steel with high strength and toughness without adding too many alloy elements and complex subsequent heat treatment. TMCP is a process that can save alloy A633 Grade D metal steel carbon-manganese-silicon steel grade and energy and is beneficial to environmental protection. A lot of our shipbuilding steel plates are produced by TMCP process.
our company is leading supplier of API 5CT casing pipes in China. N80 oil casing pipes enjoy high size precision, good weld toughness, A633 Grade D metal steel carbon-manganese-silicon steel grade good extrusion resistance, easy quality control and low cost features. Welcome to our company to purchase A633 Grade D metal steel carbon-manganese-silicon steel grade API 5CT N80 and so on casing pipes.
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