Steel 30KHN2MFA

Designation

Name The value
Designation GOST Cyrillic 30ХН2МФА
Designation GOST Latin 30XH2MFA
Transliteration 30HN2MFA
By chemical elements 30CrН2MoV

Description

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 sT|s0,2, MPa σU, 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
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU 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.