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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 - 0.45	0.2 - 0.5	0.5 - 0.8	max 0.04	max 0.04	0.8 - 1.2	0.2 - 0.3

Mechanical properties under Т=20^oС for grade 40KhML ( 40ХМЛ )

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Casting, GOST 977-88			628	334	14	25	206	Guenching 920 - 950^oC, water, Drawing 600 - 650^oC,
Casting, GOST 977-88			677	481	11	20	206	Guenching 920 - 950^oC, water, Drawing 600 - 650^oC,

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 :
s_в	- Tensile strength , [MPa]
s_T	- 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 20^o - T ) , [1/Grade]
l	- Termal (heat) condition coefficient , [Watt/(m·Grade)]
r	- Density , [kg/m³]
C	- Specific heat ( range 20^o - 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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