Steel 14Х2ГМР

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.