Database of Steel and Alloy (Marochnik)

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Metals -> Structural steel -> High workability structural steel

Characteristics of the material 12   ( 12,   12 ).

Material : 12   ( 12,   12 )
Substitute: 20
Classification : High workability structural steel


Chemical composition in % of the material 12   ( 12,   12 ) .
C Si Mn S P
0.08 - 0.160.15 - 0.350.7 - 1.10.08 - 0.20.08 - 0.15


Temperature of critical points of the grade 12   ( 12,   12 ).
Ac1 = 735 ,      Ac3(Acm) = 866 ,       Ar3(Arcm) = 840 ,       Ar1 = 685


Mechanical properties under =20o of the material 12   ( 12,   12 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Steel hotrolled 100   410   22 34 As-delivered state


    Brinell hardness of the material   12   ( 12,   12 )   (hot-rolled) ,       HB 10 -1= 160   MPa
    Brinell hardness of the material   12   ( 12,   12 )   (cold-drawn, cold-worked) ,       HB 10 -1= 217   MPa


Physical properties of the material 12   ( 12,   12 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(mGrade) kg/m3 J/(kgGrade) Ohmm
20 1.98     7830    
100 1.83 11.9 78   470  
200   12.5 67      
300 1.66       479  
400   13.6     517  
500   14.2        
600         571  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 12   ( 12,   12 ) .
  Weldability: is not used.
 Flakes : predisposed
Temper brittleness: not predisposed



Specification :
Mechanical properties :
s - 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/(mGrade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kgGrade)]
R - Electrical resistance , [Ohmm]

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

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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