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Characteristics for grade     70S2KHА   ( 70С2ХА )

      Grade :     70S2KHА   ( 70С2ХА )
      Classification :   Spring structural steel
      Equivalent grades:   Go here
Grade   70S2KHА   ( 70С2ХА ):   supplier   Auremo   www.auremo.biz
Sale:   Russia +7 (812) 680-16-77 ,   Germany +49 (208) 205-83-073,     info [a] auremo.org



Chemical composition in % for grade   70S2KHА   ( 70С2ХА )
C Si Mn Ni S P Cr Cu
0.65 - 0.751.4 - 1.70.4 - 0.6max   0.25max   0.025max   0.0250.2 - 0.4max   0.2


Mechanical properties under Т=20oС for grade   70S2KHА   ( 70С2ХА )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Band annealed , GOST 2283-79 0.1 - 4   880   8    
Band cold-worked , GOST 2283-79 0.1 - 4   780-1180       


Technological properties for grade   70S2KHА   ( 70С2ХА )
  Weldability: is not used.
 Flakes : not predisposed
Temper brittleness: not predisposed


Equivalent steels for grade     70S2KHА   ( 70С2ХА )
Warning! Indicated both exact and nearest equivalents.
GermanyFranceBulgaria
DIN,WNrAFNORBDS
1.5029
71Si7
71S7
70S2ChA

Types of delivery of grade   70S2KHА   ( 70С2ХА )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
B34 - Ribbons
В72 - Medium-high and high-carbon steel wire


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]

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

  70S2KHА   ( 70С2ХА ) - Spring structural 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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