Some plastic materials have acid resistance, some due to added enhancers or other modifications agent 420 rod, such as fiberglass mold damage to large, selection have to be considered. There is a strong corrosive plastic general election S136,2316,420 a class steel, in addition to the election S136,2316,420 weak corrosive, there SKD61, NAK80, PAK90,718M. Strongly acidic plastic material has: PVC, POM, PBT plastic material has a weak acid: PC, PP, PMMA 420 manufacturers, PA, single-medium quenching quenching method is the most common, simple operation, equipment, and environmental requirements low. Inadequate water quenching is easily deformed steel, alloy steel water quenching easy to crack. The method of operation is the end of the holding time of a workpiece into the quenching medium to the cooling capacity of the quenching cooling medium, the cooling conditions in this process depends entirely on the cooling characteristics of the workpiece using the medium. Mills use superior resources, weaknesses, the stainless steel products do fine well, despite the current market lower, but many businesses is not overly worried, because excellent product quality, while the current market even approaching low, as long as the resistance maintained, seize the opportunity to make the anti-hunters also a high probability event. National Day, the iron ore spot market transactions are extremely active in cargo turnover is also continuous heavy volume, Dalian iron ore futures even once the daily limit to close at Platts, the highest index also rose $ 83.75 / ton, the highest in nearly a month highs market sentiment continued to pick up. However, iron ore prices really have bottomed out? In fact, this is also related to the late steel to determine the trend, following the author of the latest changes in the market, as we do a brief analysis. Look forward to all of us to grasp the current market situation changes help. S136H is pre hard, but not very high hardness of 420, about HRC30 degrees, do not require heat treatment, S136 steel is hardened material, very soft 420 material, needs to be used after quenching, after quenching hardness can reach HRC58 degree about. The former requirement ratio for small quantities of injection mold, which is used in large quantities. So usually happen in large quantities, can be ordered S136 steel, different on these two areas, there is a demand of the customer can be the difference between these two areas, which were combined amount of the purchase, both to save costs, but also conducive reasonable to buy more high-quality steel! Metal heat treatment requirements for material handling must also have a clear enough understanding. Know the composition of features, performance characteristics, scope critical point, the physical and chemical parameters or characteristics of the material of various materials (here including thermal properties, swelling properties and phase transition has occurred and other information). Domestic part have an influence in the local medium-sized steel mills have begun overhaul before and after National Day, which also makes the availability of resources in some areas to reduce the appearance of tight supply of steel products, while taking into account the ongoing maintenance of large-scale steel mills have not yet formed the size of the domestic steel supply and demand pattern overall temporarily unable to change, but in steel prices continued to fall and winter coming, the total domestic steel production is the line into a slow decline. Also, another concern news is that a substantial increase in China's steel exports this year, the domestic supply and demand pressures eased to some extent, but the Government has recently said that next year China's steel export tax rebate policy will be canceled when the steel export growth is expected to occur changes in steel prices will increase the uncertainty of the market outlook. 420 suppliers, Panzhihua 420, Yong Wei steel mold (View) provided by the Dongguan City An Yongwei steel mold shop. "Die steel, DC53, SKD11.SUS440C, SUS420" preferred Dongguan City An Yongwei steel mold shop (2), the company is located at: 3 A, Dongguan City Changan Ha Kong, the first industrial zone, over the years, Yong Wei mold steel stick providing customers with the best quality service, contact: Simon / R. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Yong Wei mold steel expect to be your long term partner!