51 steel pipe today recommended steel pipe knowledge: 27SiMn characteristics

27SiMn, alloy structural steel. Unified digital code: A10272
Standard: GB/T 3077-1999
【Main Features】
The performance of this steel is better than 30Mn2 steel, high hardenability, critical quench-through diameter in water up to 8 ~ 22mm, good machinability, cold deformation plasticity and weldability; In addition, the toughness of steel in heat treatment is not much reduced, However, it has relatively high strength and wear resistance, especially when water quenched, it still has high toughness; however, this steel is sensitive to white spots, and has tempering brittleness tendency and overheating sensitivity during heat treatment.
【Application examples】
This steel is mainly used in the tempered state for the manufacture of hot stamping parts requiring high toughness and wear resistance; it can also be used in the normalized or hot rolled state of supply, such as the tractor's track pins.
27simn and ordinary steel pipe applications 1, seamless steel pipe for fluids: GB8163-2008
2. Seamless steel tubes for boilers: GB3087-2008
3, boiler high-pressure seamless pipe: GB5310-2008 (ST45.8-III type)
4. High pressure seamless steel pipe for chemical fertilizer equipment: GB6479-2000
5. Geological drilling seamless steel pipe: YB235-70
6. Petroleum drilling seamless steel pipe: YB528-65
7. Seamless Steel Pipe for Petroleum Cracking: GB9948-88
8, oil drilling special seamless tube: YB691-70
9. Seamless steel tubes for automobile half shaft: GB3088-1999
10. Seamless steel tubes for ships: GB5312-1999
11, cold-drawn cold-rolled precision seamless steel tubes: GB3639-1999
Various alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo steel pipes are divided into two types of seamless steel pipes and welded steel pipes according to different production processes. Seamless steel tubes are seamless steel tubes made from steel ingots, tube blanks or steel bars. Mainly used for hydraulic pillar steel pipe.
27SiMn seamless steel pipe weight formula: [(outer diameter - wall thickness) * wall thickness] * 0.02466 = kg / meter (weight per meter)

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