Designation
| Name |
The value |
| Designation GOST Cyrillic |
14Х2ГМР |
| Designation GOST Latin |
14X2GMP |
| Transliteration |
14H2GMR |
| By chemical elements |
14Cr2MnMoB |
Description
14Х2ГМР steel is used: for the manufacture of various loaded and shtampovannyh stamped details and designs.
Standards
| Name |
Code |
Standards |
| Processing of metals by pressure. Forgings |
В03 |
GOST 8479-70 |
| Sheets and strips |
В33 |
TU 14-1-2057-77, TU 14-1-5241-93 |
| Blanks. Of the workpiece. Slabs |
В31 |
TU НЗЛ 341-93 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
B |
Mo |
| TU 14-1-5241-93 |
≤0.16 |
≤0.02 |
≤0.03 |
≤1.2 |
≤1.7 |
≤0.37 |
≤0.3 |
Rest |
≤0.3 |
≤0.3 |
≤0.006 |
0.4-0.5 |
| TU 14-1-2057-77 |
0.1-0.16 |
≤0.02 |
≤0.03 |
0.9-1.2 |
1.3-1.7 |
0.17-0.37 |
≤0.03 |
Rest |
≤0.3 |
≤0.03 |
≤0.01 |
0.4-0.5 |
Fe is the basis.
Mechanical properties
| Section, mm |
t отпуска, °C |
sT|s0,2, MPa |
σU, MPa |
d5, % |
y, % |
KCU, kJ/m2 |
HB, MPa |
| Rolled steel. Hardening + Vacation |
| 20 |
- |
≥700 |
≥760 |
≥25 |
≥70 |
- |
187-229 |
| Sheet metal as supplied at TU 14-1-5241-93, THE 14-1-2057-77 (samples transverse) |
| 8-30 |
- |
≥590 |
≥690 |
≥14 |
- |
- |
- |
| Sheet 16 mm. Quenching in water from 950 °C to + Leave (samples transverse) |
| - |
200 |
≥1100 |
≥1350 |
≥11 |
≥41 |
≥400 |
- |
| Billet 360х240х18 mm., vtmo: Austenization at 950 °C (aging for 1 h), deformation of 35% 1-pass (samples KCU +20 °C/KCU -40 °C) |
| - |
- |
≥1150 |
≥1300 |
≥9 |
≥38 |
790/440 |
- |
| The preform is 20 mm. Quenching in water from 950 °C to + Vacation at 680 °C |
| - |
- |
≥700 |
≥760 |
≥25 |
≥70 |
- |
- |
| Forgings supplied. Annealing in air with 920-940 °C + Vacation at 620-650 °C |
| 101-300 |
- |
≥490 |
≥590 |
≥14 |
≥35 |
≥490 |
187-229 |
| Sheet 16 mm. Quenching in water from 950 °C to + Leave (samples transverse) |
| - |
300 |
≥1100 |
≥1300 |
≥10 |
≥40 |
≥90 |
- |
| Billet 360х240х18 mm., vtmo: Austenization at 950 °C (aging for 1 h), deformation of 35% 1-pass (samples KCU +20 °C/KCU -40 °C) |
| - |
- |
≥900 |
≥930 |
≥14 |
≥49 |
1450/1180 |
- |
| The preform is 20 mm. Quenching in water from 950 °C to + Vacation at 680 °C |
| - |
- |
≥630 |
≥700 |
≥20 |
≥68 |
- |
- |
| Sheet 16 mm. Quenching in water from 950 °C to + Leave (samples transverse) |
| - |
400 |
≥1000 |
≥1200 |
≥10 |
≥43 |
≥150 |
- |
| The preform is 20 mm. Quenching in water from 950 °C to + Vacation at 680 °C |
| - |
- |
≥530 |
≥690 |
≥21 |
≥66 |
- |
- |
| Sheet 16 mm. Quenching in water from 950 °C to + Leave (samples transverse) |
| - |
500 |
≥1000 |
≥1100 |
≥12 |
≥46 |
≥400 |
- |
| The preform is 20 mm. Quenching in water from 950 °C to + Vacation at 680 °C |
| - |
- |
≥530 |
≥590 |
≥20 |
≥73 |
- |
- |
| Sheet 16 mm. Quenching in water from 950 °C to + Leave (samples transverse) |
| - |
600 |
≥780 |
≥870 |
≥17 |
≥54 |
≥650 |
- |
| - |
700 |
≥630 |
≥700 |
≥25 |
≥59 |
≥780 |
- |
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 |
Technological properties
| Name |
The value |
| Weldability |
Satisfactory. Welding methods: RDS, ARDS flux and gas protection. Preheating is recommended when welding rigid structures. |
| Склонность к отпускной хрупкости |
Malosolone. |
| The temperature of forging |
Beginning - 1220 °C, the end - 750 °C. |
| Flock-sensitive sensitivity |
Sensitive. |