What is the S700MC automobile structure steel coil machining

At the same time of doing well in S700MC automobile structure steel coil production and operation, Yunnan company focused on completing the four phases of technical transformation construction projects, realizing industrial upgrading, improving equipment

At the same time of doing well in S700MC automobile structure steel coil production and operation, Yunnan company focused on completing the four phases of technical transformation construction projects, realizing industrial upgrading, improving equipment level, and laying a good foundation for the future development of the company. In the S700MC automobile structure steel coil technological transformation project, pollution control facilities have been built synchronously, and a large number of comprehensive utilization projects, such as comprehensive sewage treatment and recycling project, blast furnace gas waste heat and residual pressure power generation, have been invested and constructed.

SPHC-The first S is the abbreviation of Steel, P is the abbreviation of Plate, H is the abbreviation of Hot Heat, and C is the abbreviation of Commercial Commercial, which means generally hot-rolled steel plate and steel strip.
SPHD - It tands for hot-rolled steel sheets and strips for stamping.
SPHE - It stands for hot-rolled steel sheets and strips for deep drawing.
SPCC- It means that cold-rolled carbon steel sheets and strips are generally used, which is equivalent to China's Q195~Q21 grades. The third letter C is the abbreviation for Cold.

Compared with 15Cr steel, 20Cr alloy has higher strength and hardenability. The critical hardening diameter in oil is 4-22mm, and the critical hardening diameter in water is 11-40mm, but the toughness is poor. This S700MC automobile structure steel coil alloy steel S700MC automobile structure steel coil still has a tendency to grow grains during carburization, and direct quenching at lower temperature has a greater impact on impact toughness, so secondary quenching is required after carburization to improve the toughness of the core of the part, and there is no temper brittleness.

For S700MC automobile structure steel coil, wear-resistant plate, the change of temperature in production and processing will directly affect the properties of the whole plate, so the effect of isothermal treatment of wear-resistant steel plate has been studied all the time. The results show that the continuous cooling transformation curve, microstructure, phase and similar structural phase of wear-resistant plate also change under different heating temperature.

S700MC automobile structure steel coil, ASTM A131 shipbuilding steel has different grade levels. The ordinary strength shipbuilding steel grades are grade A/B/D/E. Their min. yield strength is 235 Mpa, and tensile strength is 400-520 Mpa. The higher strength shipbuilding steel grades are grade AH32/DH32/EH32/FH32, AH36/DH36/EH36/FH36 AH40/DH40/EH40/FH40. The min. yield strength of AH32/DH32/EH32/FH32 steel is 315 Mpa, and tensile strength is 440-590 Mpa. The min. yield strength of AH36/DH36/EH36/FH36 steel is 355 Mpa, and tensile strength is 490-620 Mpa. The min. yield strength of AH40/DH40/EH40/FH40 steel is 390 Mpa, and tensile strength is 510-650 Mpa.

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