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Characteristics for grade     20864   ( 20864 )



      Grade :     20864   ( 20864 )
      Classification :   Electrotechnical unalloyed steel
      Equivalent grades:     Is absent



Chemical composition in % for grade   20864   ( 20864 )
C Si Mn S P Cu
max   0.035max   0.3max   0.3max   0.03max   0.02max   0.3


Mechanical properties under Т=20oС for grade   20864   ( 20864 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bars hotrolled, GOST 11036-75     270   24 60  
Bars cold-drawn , GOST 11036-75     350   4    


    Brinell hardness for     20864   ( 20864 )   (hot-rolled) ,     Bars GOST 11036 HB 10 -1 = 131   MPa


Magnetic properties for grade   20864   ( 20864 )
Assortment Dimension Hc μmax P1.0/50 P1.5/50 B100 B500 B1000 B2500 B5000 B10000 B30000
- mm A/m - W/kg W/kg A/m A/m A/m A/m A/m A/m A/m
Sheet 0.1 - 3.9 64 5.6       1.38 1.5 1.62 1.71 1.81 2.05
Bars   64         1.4 1.5 1.6      


Technological properties for grade   20864   ( 20864 )
  Weldability: without limitations.




Specification :
Mechanical properties :
sв - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2]
HB - Brinell hardness , [MPa]

Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion (range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

Magnetic properties :
Hc - Coercive force [ A/m ]
μmax - Magnetic permeability [ ]
P1.0/50 - Maximum specific total loss at [ W/kg ]
B100 - Minimum magnetic flux density T for H, [ А/m ]

Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

  20864   ( 20864 ) - Electrotechnical unalloyed steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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