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Characteristics for grade 30KH3MF ( 30Х3МФ )

Grade :	30KH3MF ( 30Х3МФ )
Classification :	Alloy structurall steel
Equivalent grades:	Go here

Chemical composition in % for grade 30KH3MF ( 30Х3МФ )

C	Si	Mn	Ni	S	P	Cr	Mo	V	Cu
0.27 - 0.34	0.17 - 0.37	0.3 - 0.6	max 0.3	max 0.035	max 0.035	2.3 - 2.7	0.2 - 0.3	0.06 - 0.12	max 0.3

Mechanical properties under Т=20^oС for grade 30KH3MF ( 30Х3МФ )

Assortment	Dimension	Direct.	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPa	MPa	%	%	kJ / m²	-
Bar, GOST 4543-71	Ø 25		980	835	12	55	980	Guenching 870^oC, oil, Drawing 620^oC, water,

Brinell hardness for 30KH3MF ( 30Х3МФ ) (annealing) , GOST 4543-71

HB 10^-1 = 229 MPa

Technological properties for grade 30KH3MF ( 30Х3МФ )

Flakes :	predisposed
Temper brittleness:	predisposed

Equivalent steels for grade 30KH3MF ( 30Х3МФ )Warning! Indicated both exact and nearest equivalents.

Germany

European

Italy

Bulgaria

Poland

Czechia

Austria

DIN,WNr

UNI

BDS

CSN

ONORM

1.7707

1.8519

30CrMoV9

31CrMoV9

31CrMoV9V

1.7707

30CrMoV9

31CrMoV10

30Ch3MF

30H2MF

15330

BOHLERV350

Types of delivery of grade 30KH3MF ( 30Х3МФ )

В22 - Graded and shaped rolling

B23 - Sheets and Strips

В32 - Graded and shaped rolling

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]

Weldability :
without limitations	- welding is done without heating and subsequent heat treeting
limited weldability	- welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability	- obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

30KH3MF ( 30Х3МФ ) - 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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