30KHN2MFA steel is used: for the manufacture of shafts, solid-forged rotors, discs, parts, gears, bolts, pins and other critical parts of turbines and compressors operating at elevated temperatures.

Note

Structural steel high-quality hromonikelemolibdenovyh.

Standards

Name	Code	Standards
Sheets and strips	В23	GOST 103-2006
Bars and shapes	В22	GOST 1133-71, GOST 8319.0-75, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006
Bars and shapes	В32	GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, GOST В 5160-89, TU 14-1-2118-77, TU 14-1-3238-81, TU 14-11-245-88, TU 14-1-3238-2006, TU 14-1-1271-75, TU 14-136-367-2008
Processing of metals by pressure. Forgings	В03	GOST 8479-70
Blanks. Of the workpiece. Slabs	В31	OST 3-1686-90, TU 14-1-4944-90
Classification, nomenclature and General rules	В30	OST 3-98-80

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa	HRC
Quenching in oil from 850 °C + vacation at 200 °C, air cooling
≤15	-	1470	1710	11	50	569	-	49
Quenching in oil from 860 °C to + vacation at 680 °C (1.5 h exposure) (named place of clippings sample)
20-30	-	790	890	19	66	1668	-	-
Quenching + tempering (forgings)
100-300	-	490	655	13	40	530	212-248	-
Quenching in oil from 860 °C to + vacation
-	200	1460	1650	8	51	667	-	50
Samples with a cross section of 10 mm. Quenching in oil from 860 °C to + leave at 500 °C
-	-	-	1160	13	65	-	-	-
Steel calibrated and calibrated with special surface finish, hot rolled and hot rolled with special surface finish
-	-	-	-	-	-	-	≤269	-
Quenching in oil from 860 °C to + vacation at 680 °C, air cooling
25	-	785	880	10	40	863	-	-
Quenching in oil from 860 °C to + vacation at 680 °C (1.5 h exposure) (named place of clippings sample)
20-40	-	680	940	16	58	1373	-	-
Quenching + tempering (forgings)
300-500	-	490	655	12	35	481	212-248	-
Quenching in oil from 860 °C to + vacation
-	300	1400	1550	8	55	530	-	48
Samples with a cross section of 10 mm. Quenching in oil from 860 °C to + leave at 500 °C
-	-	-	920	13	68	-	-	-
Bars and strip, hot-rolled, forged, kalibrovochnye with special surface finish. Quenching in oil with 870-890 °C + vacation at 620-660 °C, air cooling (TU 14-1-3238-81)
25	-	784	882	10	40	880	-	-
Quenching in oil from 860 °C to + vacation
-	400	1310	1410	9	56	638	-	44
Samples with a cross section of 10 mm. Quenching in oil from 860 °C to + leave at 500 °C
-	-	-	680	36	79	-	-	-
Quenching in oil from 860 °C to + vacation
-	500	1190	1230	10	58	912	-	40

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
KCU	Toughness
HB	Brinell hardness number
HRC	Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature	Е, HPa	G, HPa	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
0	216	87	36	333	-	-
20	216	-	36	333	-	-
100	207	81	35	-	111	466
200	206	77	35	-	117	508
300	188	73	34	-	123	529
400	176	68	32	-	129	567
500	169	64	31	-	133	567
600	-	-	29	-	133	-
700	-	-	28	-	-	588
800	-	-	27	-	137	-

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
G	Modulus of elasticity shear torsion
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Technological properties

Name	The value
The temperature of forging	Start - 1200 °C, the end - of 800 °C. slow Cooling.

Temperature	Е, HPa	G, HPa	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
0	216	87	36	333	-	-
20	216	-	36	333	-	-
100	207	81	35	-	111	466
200	206	77	35	-	117	508
300	188	73	34	-	123	529
400	176	68	32	-	129	567
500	169	64	31	-	133	567
600	-	-	29	-	133	-
700	-	-	28	-	-	588
800	-	-	27	-	137	-

Temperature	Е, HPa	G, HPa	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C	С, J/(kg · °C)
0	216	87	36	333	-	-
20	216	-	36	333	-	-
100	207	81	35	-	111	466
200	206	77	35	-	117	508
300	188	73	34	-	123	529
400	176	68	32	-	129	567
500	169	64	31	-	133	567
600	-	-	29	-	133	-
700	-	-	28	-	-	588
800	-	-	27	-	137	-

Steel 30KHN2MFA

Designation

Description