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Steel 15KHM

Steel 15Kh5M (X5M) 30Cr3MA steel 30Kh3VA steel Steel 25X5M Steel 25Kh3MFA-A Steel 25Kh3MFA (48TS-4) Steel 25Kh2MFA (48TS-1) Steel 25Kh2M1F (EI723) Steel 25Х1МФ (ЭИ10) Steel 20Х3МВФ (ЭИ415) Steel 20Х1М1Ф1ТР (EP182) Steel 18Kh3MV (EI578) Steel 18Kh2MFA-A Steel 18Kh2MFA (48TS-3) 15CrM Steel Steel 15X5VF (X5VF) Steel 15X5 (X5) Steel 15Kh2MFA-A Steel 15Kh2MFA (48TS-3-40) Steel 13X9M (X9M) Steel 13Х3Н3М2ВФБ (VKS-10) 12XM steel Steel 12Kh8VF (1Kh8VF) Steel 12X8 (1X8) Steel 12Kh2MFA-A Steel 12Х2МФА (48ТС-2) Steel 12Kh1MF (12KhMF; 12KhMFA) 12MX steel Steel 08Х16Н9М2

Designation

Name The value
Designation GOST Cyrillic 15ХМ
Designation GOST Latin 15XM
Transliteration 15HM
The chemical elements 15CrMo

Description

Steel 15KHM used: for the manufacture of bushings for tracks of tractors; various parts operating at temperatures from -40 °C to +560 °C under pressure; pipelines with quenching in water or air and release air; a tube blank intended for the production of seamless cold, warm, hot-wrought, including hot-pressed and hot-pressed reduced pipes for steam boilers and pipelines, installations with high and supercritical steam parameters.

Note

The structural quality chromium vanadium steel.

Standards

Name Code Standards
Sheets and stripes В23 GOST 103-2006
Sectional and shaped rolling В32 GOST 1051-73, GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1529-2003, TU 14-1-5228-93, TU 14-136-367-2008
Sectional and shaped rolling В22 GOST 1133-71, GOST 8319.0-75, GOST 2590-2006, GOST 2591-2006
Metal forming. Forgings В03 GOST 8479-70, OST 5Р.9125-84, TU 0306.018-80, ST ЦКБА 010-2004
Pipes steel and connecting parts to them В62 GOST 8732-78, GOST 8734-75, GOST 9567-75, GOST 23270-89, GOST 24950-81, GOST 30563-98, GOST 30564-98, GOST 8733-87, GOST 8731-87, GOST Р 53383-2009, TU 14-159-195-90, TU 14-3-463-2005, TU 14-3-460-2009, TU 14-3Р-55-2001, TU 14-3-460-2003, TU 14-3-1654-89
Bulls. Blanks. Slabs В31 OST 3-1686-90, TU 108-938-80, TU 14-1-4944-90, TU 14-1-4992-91
Thermal and thermochemical treatment of metals В04 ST ЦКБА 026-2005

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo W
TU 14-3-460-2003 0.11-0.15 ≤0.025 ≤0.035 0.4-0.7 0.8-1.1 0.17-0.37 ≤0.25 The rest ≤0.2 - - 0.4-0.55 -
GOST 4543-71 0.11-0.18 ≤0.035 ≤0.035 0.4-0.7 0.8-1.1 0.17-0.37 ≤0.3 The rest ≤0.3 ≤0.05 ≤0.03 0.4-0.55 ≤0.2
TU 14-3Р-55-2001 0.1-0.15 ≤0.025 ≤0.035 0.4-0.7 0.8-1.1 0.17-0.37 ≤0.25 The rest ≤0.2 - - 0.4-0.55 -
Fe is the basis.
According to GOST 4543-71 the content in high-quality steel is regulated: P ≤ 0.025%; S ≤ 0.025%; Cu ≤ 0.30%; in high-grade steel: P ≤ 0.025%; S ≤ 0.015%; Cu ≤ 0.25%.
According to TU 14-1-1529-2003 and TU 14-3-460-2003 for steel produced by scrap process or from cuprous ores, the mass fraction of residual copper and nickel is allowed up to 0.30% of each. A technological addition of rare earth elements is allowed to improve the quality of the metal. Deviation by the mass fraction of carbon is allowed - minus 0.020%.
According to TU 14-3P-55-2001 for steel made by scrap-process or from cuprous ores, the content of copper and nickel is allowed to not exceed 0.30% of each. The presence of rare-earth elements introduced as technological additives is allowed.

Mechanical characteristics

Section, mm t отпуска, °C sT|s0,2, MPa σB, MPa d5, % y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Forgings. Hardening + Vacation
100-300 - ≥345 ≥590 ≥17 ≥40 ≥530 174-217
100 - ≥395 ≥615 ≥17 ≥45 ≥579 187-229
100 - ≥440 ≥635 ≥16 ≥45 ≥579 197-235
100 - ≥490 ≥655 ≥16 ≥45 ≥579 212-248
Blank pieces of pipe fittings. Quenching in water from 910-930 °C (exposure for 2.5-4.0 hours depending on thickness and weight of the workpiece) with the following tempering in the air
≤100 560-580 ≥490 ≥615 ≥18 ≥50 ≥686 197-217
Steel calibrated and calibrated with special surface finish, hot rolled and hot rolled with special surface finish. Heat-treated (annealing)
- - - - - - ≤179
Seamless pipes for steam boilers and pipelines according to TU 14-3P-55-2001. Normalization at 930-960 °C + Vacation at 680-730 (excerpt of not less than 0.5 h), air cooling
- ≥225 - - - - -
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥345 ≥530 ≥26 ≥67 - -
Blank pieces of pipe fittings. Annealing in air from 930-950 °C (exposure for 2.5-4.0 hours depending on thickness and weight of the workpiece) with the following tempering in the air
≤300 620-640 ≥255 ≥441 ≥22 ≥40 ≥590 143-163
Seamless pipes for steam boilers and pipelines according to TU 14-3P-55-2001. Normalization at 930-960 °C + Vacation at 680-730 (excerpt of not less than 0.5 h), air cooling
- ≥196 - - - - -
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥220 ≥500 ≥22 ≥67 - -
Forgings for parts resistant to the ICC. Annealing in air from 870-890 °C + Vacation at 640-660 °C, air cooling
≤250 - ≥275 ≥441 ≥21 ≥55 ≥1177 -
Seamless pipes for steam boilers and pipelines according to TU 14-3P-55-2001. Normalization at 930-960 °C + Vacation at 680-730 (excerpt of not less than 0.5 h), air cooling
- ≥191 - - - - -
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥245 ≥495 ≥24 ≥69 - -
Tubular billet + hot deformed Tubes (DH=57-465 mm) TU 14-3-460-2003. Normalization at 900-930 °C + Vacation at 700-730 °C (aged for at least 30 min), air cooling
20-25 - ≥225 440-460 ≥20 ≥45 ≥490 -
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥245 ≥480 ≥22 ≥74 - -
Tubular billet + hot deformed Tubes (DH=57-465 mm) TU 14-3-460-2003. Normalization at 900-930 °C + Vacation at 700-730 °C (aged for at least 30 min), air cooling
20-25 - ≥235 440-640 ≥21 ≥50 ≥590 -
Forgings. Normalization + Vacation
100-300 - ≥195 ≥390 ≥23 ≥50 ≥530 111-156
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥265 ≥440 ≥20 ≥76 - -
Forgings. Normalization + Vacation
100 - ≥195 ≥390 ≥26 ≥55 ≥579 111-156
Seamless pipes for steam boilers and pipelines according to TU 14-3P-55-2001. Normalization at 930-960 °C + Vacation at 680-730 (excerpt of not less than 0.5 h), air cooling
- - ≥225 441-637 ≥20 ≥45 ≥490 -
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥265 ≥410 ≥20 62-82 - -
Forgings. Normalization + Vacation
100-300 - ≥215 ≥430 ≥20 ≥48 ≥481 123-167
Seamless pipes for steam boilers and pipelines according to TU 14-3P-55-2001. Normalization at 930-960 °C + Vacation at 680-730 (excerpt of not less than 0.5 h), air cooling
- - ≥235 441-637 ≥21 ≥50 ≥590 -
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥245 ≥410 ≥21 ≥79 - -
Tubes seamless cold - and hot-deformed in the delivery condition heat treated
- ≥225 ≥431 ≥21 - - -
Forgings. Normalization + Vacation
100 - ≥215 ≥430 ≥24 ≥53 ≥530 123-167
Rolled steel. Normalization at 900-920 °C, air cooling + Vacation at 630-650 °C
- - ≥240 ≥305 ≥22 51-77 - -
Forgings. Normalization + Vacation
100-300 - ≥245 ≥470 ≥19 ≥42 ≥334 143-179
100 - ≥245 ≥470 ≥22 ≥48 ≥481 143-179
100-300 - ≥275 ≥530 ≥17 ≥38 ≥334 156-197
300-500 - ≥275 ≥530 ≥15 ≥32 ≥285 156-197
100 - ≥275 ≥530 ≥20 ≥40 ≥432 156-197
100 - ≥315 ≥570 ≥17 ≥38 ≥383 167-207
100 - ≥345 ≥590 ≥18 ≥45 ≥579 174-217

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

Physical characteristics

Temperature Е, ГПа r, кг/м3 l, Вт/(м · °С) a, 10-6 1/°С С, Дж/(кг · °С)
0 205 7850 - - -
100 - 7830 44 122 -
200 - 7800 41 13 -
300 - 7760 41 133 487
400 - 7730 39 137 -
500 - 7700 36 14 -
600 - 7660 34 143 -
800 - - 29 134 -
900 - - 29 - -
700 - - - 145 -
1000 - - - 112 -
1200 - - - 125 -

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
Weldability Welded without any restrictions. Welding methods: SMAW, ADS under gas protection, the CCC. Recommended heating and subsequent heat treatment.
Propensity to temper brittleness Tend not.
Forging temperature Start - 1260 °C, the end - 750 °C. the cross Sections up to 200 mm are cooled in air, 201-700 mm are subjected to low temperature annealing.
Flock-sensitive sensitivity Sensitive.
Workability by cutting In the normalized and tempered condition, when blower SB 138 HB=460 MPa Kn TV.SPL.=1,6 Kn b.St.=1,4.

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