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Characteristics for grade     40KhML   ( 40ХМЛ )



      Grade :     40KhML   ( 40ХМЛ )
      Classification :   Casting alloy steel for general purposes
      Equivalent grades:     Is absent



Chemical composition in % for grade   40KhML   ( 40ХМЛ )
C Si Mn S P Cr Mo
0.38 - 0.450.2 - 0.50.5 - 0.8max   0.04max   0.040.8 - 1.20.2 - 0.3


Mechanical properties under Т=20oС for grade   40KhML   ( 40ХМЛ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting, GOST 977-88     628 334 14 25206Guenching 920 - 950oC, water, Drawing 600 - 650oC,
Casting, GOST 977-88     677 481 11 20206Guenching 920 - 950oC, water, Drawing 600 - 650oC,


Heat treatment of the material   40KhML   ( 40ХМЛ )
Normalizing 850 - 880 ° C, Tempering 550 - 650 ° C
Hardening 830 - 860 ° C, Tempering 530 - 670 ° C



Types of delivery of grade   40KhML   ( 40ХМЛ )
B82 - Steel Castings


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]

  40KhML   ( 40ХМЛ ) - Casting alloy steel for general purposes: 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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