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

Characteristics of the material 40KHL   ( 40HL,   40 ).

Material : 40KHL   ( 40HL,   40 )
Substitute: 30, 35
Classification : Casting steel for general purposes


Chemical composition in % of the material 40KHL   ( 40HL,   40 ) .
C Si Mn Ni S P Cr Cu
0.35 - 0.450.2 - 0.40.4 - 0.9max   0.3max   0.04max   0.040.8 - 1.1max   0.3


Temperature of critical points of the grade 40KHL   ( 40HL,   40 ).
Ac1 = 743 ,      Ac3(Acm) = 782 ,       Ar3(Arcm) = 730 ,       Ar1 = 693


Mechanical properties under =20o of the material 40KHL   ( 40HL,   40 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting to 100   650 500 12 25400Normalizing 850 - 860oC,Drawing 600 - 650oC,


    Brinell hardness of the material   40KHL   ( 40HL,   40 )   ,       HB 10 -1= 196 - 229   MPa


Physical properties of the material 40KHL   ( 40HL,   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 2.19   48 7830   233
100 2.16 12.2 46   491 270
200 2.1 12.7 45   508 335
300 2.04 13.1 42   525 435
400 1.85 13.4 39   538 540
500 1.76 13.8 35   567 665
600 1.64 13.2 32   588 815
700 1.43 14.6 28   626 975
800 1.32 11.8 27   701 1115
900   12.6 27   689 1195
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 40KHL   ( 40HL,   40 ) .
  Weldability: limited weldability.
 Flakes : weakly predisposed
Temper brittleness: predisposed


Technological properties of the material 40KHL   ( 40HL,   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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