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Characteristics for grade 25KH2N4MА ( 25Х2Н4МА )

Grade :	25KH2N4MА ( 25Х2Н4МА )
Substitute:	25Х2Н4ВА
Classification :	Alloy structurall steel
Equivalent grades:	Go here

Chemical composition in % for grade 25KH2N4MА ( 25Х2Н4МА )

C	Si	Mn	Ni	S	P	Cr	Mo	Cu
0.21 - 0.28	0.17 - 0.37	0.25 - 0.55	4 - 4.4	max 0.025	max 0.025	1.35 - 1.65	0.3 - 0.4	max 0.3

Mechanical properties under Т=20^oС for grade 25KH2N4MА ( 25Х2Н4МА )

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Bar, GOST 4543-71	Ø 25		1080	930	11	45	880	Guenching 850^oC, oil, Drawing 560^oC, oil,

Brinell hardness for 25KH2N4MА ( 25Х2Н4МА ) (annealing) , GOST 4543-71	HB 10^-1 = 269 MPa
Brinell hardness for 25KH2N4MА ( 25Х2Н4МА ) , Bar GOST 10702-78	HB 10^-1 = 225 MPa

Equivalent steels for grade 25KH2N4MА ( 25Х2Н4МА )Warning! Indicated both exact and nearest equivalents.

Bulgaria

Poland

BDS

25Ch2N4MA

25H2N4WA

Types of delivery of grade 25KH2N4MА ( 25Х2Н4МА )

В22 - Graded and shaped rolling

B23 - Sheets and Strips

В32 - Graded and shaped rolling

В71 - Low-carbon steel wire

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]

25KH2N4MА ( 25Х2Н4МА ) - 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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