ASTM 4140 Steel Sheet 4130 30Crmo 42Crmo

Product Specification

Product description

ASTM 4140 4130 30Crmo 42Crmo steel plate hot rolled steel sheet alloy steel plate

4130 structural steel has high strength and toughness, higher hardenability, critical quenching diameter in the oil 15 ~ 70mm; The thermal strength of steel is also good, with sufficient high temperature strength below 500℃, but the strength decreases significantly at 550℃. When alloying elements at the lower limit welding is quite good, but close to the upper limit welding performance is medium, and need to preheat to 175℃ before welding; The steel has good machinability and medium plasticity during cold deformation. The first kind of tempering brittleness in the range of 300 ~ 350℃ during heat treatment; Tendency to form white spots.

Product detail

Our advantage

Application

This type of steel is usually used in the tempered state, when the carbon content of the lower limit of steel can also be used for higher core strength of carburizing steel. In the medium machinery manufacturing industry is mainly used for manufacturing large section, in high stress conditions of the work of tempering parts, such as shaft, spindle and high load control wheel, bolts, bolts, gears, etc.; In the chemical industry for the manufacture of welding parts, plates and pipes composed of welding structure and in the nitrogen hydrogen medium working temperature does not exceed 250℃ high pressure conduit; In the steam turbine and boiler manufacturing industry for the manufacture of fasteners under 450℃, under 500℃ high pressure flanges.

Packing and delivery

20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)
Ss400 steel plate a36 steel plate carbon steel plate Packing Details : Bundle with steel strip
Standard Export Seaworthy Package.Suit for all kinds of transport,or as required

Port:Qingdao port ,Tianjin port , Shanghai port Lead time : quantity (tons) 1-25 7days ﹥25 to be negotiated

Company profile

Shandong Kai steel Import and Export Co.,Ltd is located in Shandong Province, China,. KunDa is a diversified private enterprise, Which business cover Wear Resistant Steel Plate/Weathering Steel Plate/High Strength Carbon Steel Plate , ship steel plate and coil , carbon seamless and welded pipe , Stainless Steel plate and coil , stainless welded and seamless pipe , round bar . KunDa steel has built several joint-ventured steel production line with some well-known steel enterprises: twenty-four pieces stainless pipe production line, annual output 100 thousand tons; Forty-eight pieces Carbon pipe production line, annual output 800 thousand tons; two pieces Aluminum production line ,annual output 30 thousand tons, Carbon steel plate and stainless steel plate more than 5000 tons stock always.

Customer visit

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we always keep the service philosophy "keep improving win-win cooperation" , the best steel quality, strict quality management, perfect after-sales service, reasonable product prices, good customer reputation, integrity of the business philosophy. Realize the common development of customers, employees and enterprises.

Customer feedback

Because of our outstanding professional ability, help customers solve some problems, timely delivery ability, to ensure the target countries of customers to market time, competitive prices, and good after-sales service, we have been highly praised and praised by many customers.