Bozhong Metal Group’s superior AISI 4140

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Supplier: Shanghai Bozhong Metal Group Co., Ltd
Shanghai Bozhong Metal Group Co., Ltd was founded in 2006, with 31 million registered fund, It is the leading integrated operator of modern service industry for specialty stainless steel....
Product Information:

AISI 4140

A prehardened mold steel (311-345 HB / 33-37 HRC) with improved machinability 41X40 is a chromium-manganese-molybdenum grade designed for plastic mold industry. This grade is normally delivered in a prehardened condition at a hardness level of 33/37HRC. The grade has a fully homogeneous martensite-bainite microstructure. 41X40 grade has specific sulfur addition (0.060% typical) in order to increase strongly its machinability. Compared to AISI P20 grade, 30% increase in milling speed and 300% increase in drilling speed can be expected. At constant cutting speed, tool life is multiplied a least by 5 when replacing P20 by 41X40 grade. 41X40 is not suitable for polishing requirements. This grade is typically used for: 1.Plastic injection molds for thermoplastics 2.Extrusion dies for thermoplastics 3.Compression molds

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