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Characteristics for grade 12KH7G3SL ( 12Х7Г3СЛ )

Grade :	12KH7G3SL ( 12Х7Г3СЛ )
Classification :	Casting alloy steel for general purposes
Equivalent grades:	Is absent

Chemical composition in % for grade 12KH7G3SL ( 12Х7Г3СЛ )

C	Si	Mn	S	P	Cr
0.1 - 0.15	0.8 - 1.2	3 - 3.5	max 0.02	max 0.02	7 - 7.5

Mechanical properties under Т=20^oС for grade 12KH7G3SL ( 12Х7Г3СЛ )

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Casting, GOST 977-88			1324	1079	9	40	589

Heat treatment of the material 12KH7G3SL ( 12Х7Г3СЛ )

Pre - processing - Normalizing 940 - 960 ° C, Tempering 650 - 720 ° C

Final processing - Hardening 880 - 900 ° C, Tempering 200 - 250 ° C

Types of delivery of grade 12KH7G3SL ( 12Х7Г3СЛ )

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]

12KH7G3SL ( 12Х7Г3СЛ ) - 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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