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Characteristics for grade     70G   ( 70Г )

      Grade :     70G   ( 70Г )
      Classification :   Spring structural steel
      Equivalent grades:   Go here
Grade   70G   ( 70Г ):   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   70G   ( 70Г )
C Si Mn Ni S P Cr Cu
0.67 - 0.750.17 - 0.370.9 - 1.2max   0.25max   0.035max   0.035max   0.25max   0.2


Mechanical properties under Т=20oС for grade   70G   ( 70Г )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 14959-79 to Ø 80   1030 834 7 25 Guenching 830oC, oil, Drawing 470oC,
Sheet trick, GOST 1577-93     780   10    
Band annealed , GOST 2283-79     640-740  10-15   
Band cold-worked , GOST 2283-79     740-1180       


    Brinell hardness for     70G   ( 70Г )   (without heat treatment) ,     Rolled stock GOST 14959-79 HB 10 -1 = 285   MPa
    Brinell hardness for     70G   ( 70Г )   (without heat treatment) ,     Rolled stock GOST 14959-79 HB 10 -1 = 241   MPa
    Brinell hardness for     70G   ( 70Г )   (annealing) ,     Sheet trick GOST 1577-93 HB 10 -1 = 229   MPa


Equivalent steels for grade     70G   ( 70Г )
Warning! Indicated both exact and nearest equivalents.
USAGermanyPolandCzechia
-DIN,WNrPNCSN
1572
G15720
80Mn4
65G
13180

Types of delivery of grade   70G   ( 70Г )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
B34 - Ribbons
В71 - Low-carbon steel wire
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]

  70G   ( 70Г ) - 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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