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Characteristics for grade 12Kh2NVFA ( 12Х2НВФА )

Grade :	12Kh2NVFA ( 12Х2НВФА ) ( ЭИ712 )
Classification :	Alloy structurall steel
Equivalent grades:	Is absent

Chemical composition in % for grade 12Kh2NVFA ( 12Х2НВФА )

C	Si	Mn	Ni	S	P	Cr	W	V	Cu
0.09 - 0.16	0.17 - 0.37	0.3 - 0.7	0.8 - 1.2	max 0.025	max 0.025	1.9 - 2.4	1 - 1.4	0.18 - 0.28	max 0.25

Mechanical properties under Т=20^oС for grade 12Kh2NVFA ( 12Х2НВФА )

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Pipe, GOST 21729-76			490		16
Sheet trick, GOST 11269-76			490-740		15			Normalizing
Sheet trick, GOST 11269-76			1030		10		590	Guenching and drawing
Sheet thin, GOST 11268-76			490-740		15			Normalizing
Sheet thin, GOST 11268-76			1030		10			Guenching and drawing

Brinell hardness for 12Kh2NVFA ( 12Х2НВФА ) (normalize) , Sheet trick GOST 11269-76

HB 10^-1 = 156 - 217 MPa

Types of delivery of grade 12Kh2NVFA ( 12Х2НВФА )

B23 - Sheets and Strips

B33 - Sheets and Strips

В62 - Steel pipes and connecting parts to them

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]

12Kh2NVFA ( 12Х2НВФА ) - Alloy structurall steel: 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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