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Metals -> Casting steel -> Casting steel for general purposes

Characteristics of the material 40L   ( 40L,   40 ).

Material : 40L   ( 40L,   40 )
Substitute: 45
Classification : Casting steel for general purposes


Chemical composition in % of the material 40L   ( 40L,   40 ) .
C Si Mn Ni S P Cr Cu
0.37 - 0.450.2 - 0.520.4 - 0.9max   0.3max   0.045max   0.04max   0.3max   0.3


Temperature of critical points of the grade 40L   ( 40L,   40 ).
Ac1 = 726 ,      Ac3(Acm) = 790 ,       Ar3(Arcm) = 728 ,       Ar1 = 689


Mechanical properties under =20o of the material 40L   ( 40L,   40 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting to 100   530 300 14 25290Normalizing 860 - 880oC,Drawing 600 - 630oC,


    Brinell hardness of the material   40L   ( 40L,   40 )   ,       HB 10 -1= 146 - 173   MPa


Physical properties of the material 40L   ( 40L,   40 ) .
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       7810    
100   12.4 60   470  
200   12.6 53   483  
300            
400   14.5 47   525  
500     41      
600   14.6     571  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 40L   ( 40L,   40 ) .
  Weldability: limited weldability.
 Flakes : not predisposed
Temper brittleness: not predisposed


Technological properties of the material 40L   ( 40L,   40 ) .
 Linear shrinkage, % : 2.2 - 2.3



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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