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Pipe 12XH3A – BVB Alyans, TOO | all.biz
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Pipe 12XH3A

Pipe 12XH3A

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1186919.48 XAF
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Kazakhstan, Astana
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8 years on Allbiz
Technical characteristics
  • BrandММК
  • Country of manufactureRussia
Description
Brand: 12XH3A (substitutes: 12XH2, 20XH3A, 25HGT, 12X2H4A, 20XHP) Type of delivery: bar, including shaped: GOST 4543-71, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006, GOST 10702-78. The calibrated bar: GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 1051-73, GOST 10702-78. Polished bar and silver steel: GOST 14955-77. Strip: GOST 103-2006. Forgings and forged preparations: GOST 1133-71. Pipes: GOST 21729-76, GOST 8734-75, GOST 9567-75. Class: The structural Steel alloyed Use in the industry: gear wheels, shaft, worms, cam sleeves, piston pins and other cemented parts to which requirements of high strength, plasticity and viscosity of a core and high surface hardness working under the influence of shock loads or at negative temperatures to -100 °C are imposed. Properties and useful information: Specific weight: 7850 kg/m3 Forging temperature, °C: beginnings 1220, end 800. Sections to 100 mm are cooled on air, 101-300 mm in a hole. Heat treatment: Tempering and issue Hardness of material: HB 10-1 = 217 MPas Temperature of critical points: Ac1 = 715, Ac3(Acm) = 773, Ar3(Arcm) = 726, Ar1 = 659, Mn = 380 Workability cutting: in a hot-rolled state at HB 183-187, K υ TV. spl =1,26 and Kυ B. St =0,95 Bondability of material: restrictedly welded. Welding methods: RDS, ADS under gumboil. Flokenochuvstvitelnost: it is sensitive. Tendency to temper brittleness: it is inclined. Cementation (carburizing) is called the chemical heat treatment consisting in diffusion saturation of a surface layer became carbon when heating in a carburizing atmosphere (carburizer). Final properties of the cemented products get after tempering and low issue. Assignment of cementation and the subsequent heat treatment - to give to a surface layer the high hardness and wear resistance, to raise a limit of contact endurance and a fatigue limit at a bend at preservation of a viscous core. Cementation is widely applied to hardening of midsize cogwheels, shaft of a transmission of cars, separate parts of rudder control, shaft of high-speed machines, spindles and many other machine components. On cementation of a part arrive after machining with an allowance for rough and final grinding of 0,05-0,010 mm. In many cases of cementation only the part of a part, then the sites which are not subject to hardening is exposed cover with a thin coat of low-porous copper (0,02-0,04 mm) which is applied in the electrolytic way, or isolate the special plastering consisting of the mix of underearth, sand and asbestos based on liquid glass. For ensuring stability and quality recommend to a part to subject before cementation to washing in 3 - 5% soda solution. Apply to the cemented products low-carbonaceous (0,1-0,25% C) became. After cementation, tempering and low issue of these staly the cemented layer should have HRC 58-62 hardness, and HRC 20-40 core. The core cemented by staly should have high mechanical properties, especially raised flowability limit, besides, it should be is hereditary fine-grained. Apply to the parts of responsible assignment experiencing considerable dynamic loads in operation chrome-nickel (such as: 12XH3A, 20XH3A) and more complex-alloyed steels. The simultaneous alloying chrome and nickel increases durability, plasticity and viscosity of a core. Nickel, except, that, increases durability and viscosity of the cemented layer. Chrome-nickel became insensitive to an overheat at long cementation and are not inclined to supersaturation of surface layers carbon. Big stability of the overcooled austenite in the field of perlitic and intermediate transformations provides high hardness penetration of chrome nickel steel. Buy the Pipe 12XH3A legko:1. You send zayavku2. We expose to you schet3. You pay convenient for you sposobom4. You receive the goods the Most important that you need to know about the BVB-alliance company. • Deliverable metal rolling constantly is available, and is stored "about 2000 tons" in a warehouse. • Own production of a professional flooring. • We offer a payment delay "about one month". • We do everything possible for minimization of terms of processing and delivery. • We carry out metal cutting in the size and according to your drawings. • We provide service of safe custody in the covered warehouse. • We offer the loyalty program allowing to receive discounts for purchase, processing or delivery of metal rolling. Advantages of work with nami:1. Goods available on sklade2. Official garantiya3. High quality tovarov4. Operational dostavka5. The program you can specify the loyalnostiaktualny price on the Pipe 12XH3A at our manager. The final price of products forms, proceeding from terms of delivery: quantity, terms of payment and place of shipment. Ask the manager. This price list has exclusively information character and under no circumstances is not the public offer determined by provisions of the p. 2 of Art. 437 of the Civil code of the Russian Federation.

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