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Supply steel pipes tubing Factory Quotes

 

27SIMn thick-walled steel pipe is commonly known as 27 silicon-manganese steel pipe. It is a material in steel pipes with a carbon content of 0.24-0.32%. Silicon-manganese single-pointed out because of the five major elements (carbon C, silicon Si, manganese Mn, phosphorus P , Sulfur S), the content of silicon manganese is about 1.10-1.40%.


27SiMn characteristics and uses:


27SIMn thick-walled steel pipe has high hardenability, good machinability, moderate cold deformation plasticity and weldability; in addition, the toughness of steel does not decrease much during heat treatment, but it has relatively high strength and wear resistance, especially when water quenched Still high toughness; but this steel has high sensitivity to white point, tempering brittleness tendency and overheat sensitivity during heat treatment, high strength, hardenability, good toughness, small deformation during quenching, high creep at high temperature Strength and lasting strength. It is used to manufacture forgings that require thicker steel pipe with higher strength and larger quenched and tempered section, such as large gears for locomotive traction, supercharger transmission gears, rear axles, heavily loaded connecting rods and spring clamps. Under 2000m petroleum deep well drill pipe joints and fishing tools, and can be used in the mold of the bending machine.


27SIMn pipe is suitable for power plant, boiler plant, chemical industry, car, ship accessories, mainly used for hydraulic prop pipe, used for hydraulic cylinder sleeve, etc.


Performance of 27SIMn thick wall steel pipe:


27SIMn steel pipe tensile strength σb (MPa): ≥985 (100) thick wall steel pipe, 27SiMn thick wall steel pipe


27SIMn steel pipe yield strength σs (MPa): ≥835 (85)


27SIMn steel pipe elongation δ5 (%): ≥12


27SIMn steel pipe section shrinkage ψ (%): ≥45


27SIMn steel pipe Impact work Akv (J): ≥63


27SIMn steel pipe impact toughness αkv (J / cm2): ≥78 (8)


27SIMn steel pipe hardness: ≤229HB sample size: sample blank size is 25mm


27SIMn steel pipe Creep strength and endurance strength, long-term working temperature can reach 500 ℃; moderate plasticity during cold deformation, poor weldability.


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