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Characteristics for grade 07KH21G7АN5 ( 07Х21Г7АН5 )

Grade :	07KH21G7АN5 ( 07Х21Г7АН5 ) ( Х21Г7АН5 ЭП222 )
Classification :	Сryogenic structural steel
Equivalent grades:	Is absent

Chemical composition in % for grade 07KH21G7АN5 ( 07Х21Г7АН5 )

C	Si	Mn	Ni	S	P	Cr	N
max 0.07	max 0.7	6 - 7.5	5 - 6	max 0.03	max 0.03	19.5 - 21	0.15 - 0.25

Mechanical properties under Т=20^oС for grade 07KH21G7АN5 ( 07Х21Г7АН5 )

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Bar, GOST 5949-75	to Ø 60		690	365	40	50	1270	Guenching 1000 - 1050^oC, air,

Physical properties for grade 07KH21G7АN5 ( 07Х21Г7АН5 )

T	E 10^{- 5}	a 10⁶	l	r	C	R 10⁹
Grade	MPa	1/Grade	Watt/(m·Grade)	kg/m³	J/(kg·Grade)	Ohm·m
20	2.07

Types of delivery of grade 07KH21G7АN5 ( 07Х21Г7АН5 )

В22 - Graded and shaped rolling

B23 - Sheets and Strips

В32 - Graded and shaped rolling

B33 - Sheets and Strips

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]

07KH21G7АN5 ( 07Х21Г7АН5 ) - Сryogenic structural 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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