Steel 38Х2Н3М

Designation

Name The value
Designation GOST Cyrillic 38Х2Н3М
Designation GOST Latin 38X2H3M
Transliteration 38H2N3M
By chemical elements 38Cr2Н3Mo

Description

38Х2Н3М steel is used: for the manufacture of critical parts of containers with high requirements for mechanical properties at elevated temperatures.

Chemical composition

Standard C S P Mn Cr Si Ni Mo
0.35-0.42 ≤0.035 ≤0.03 0.5-0.8 1-1.5 0.17-0.37 2.75-3.25 0.3-0.4
Chemical composition is not verified by NTD. Total verified brands for chemical compounds: 2906 of 3316.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Quenching in oil with 850-870 °C + Vacation at 560-620 °C, cooling with the furnace
801-1300 - - - - - 241-321
Forgings section up to 600 mm. Quenching in oil with 850-870 °C + Vacation at 510-540 °C, cooling with the furnace
- ≥1000 ≥1100 ≥11 - - 321-388
Quenching in oil with 850-870 °C + Vacation at 560-620 °C, cooling with the furnace
501-800 ≥750 ≥900 ≥11 ≥30 ≥400 277-321
Forgings section up to 600 mm. Quenching in oil with 850-870 °C + Vacation at 510-540 °C, cooling with the furnace
- ≥750 ≥850 ≥12 - - -
Quenching in oil with 850-870 °C + Vacation at 560-620 °C, cooling with the furnace
301-500 ≥800 ≥950 ≥11 ≥30 ≥500 263-331
Forgings section up to 600 mm. Quenching in oil with 850-870 °C + Vacation at 510-540 °C, cooling with the furnace
- ≥700 ≥800 ≥12 - - -
Quenching in oil with 850-870 °C + Vacation at 560-620 °C, cooling with the furnace
101-300 ≥900 ≥1000 ≥12 ≥35 ≥600 302-340
Forgings section up to 600 mm. Quenching in oil with 850-870 °C + Vacation at 550-580 °C, cooling with the furnace
- ≥800 ≥900 ≥12 - - 269-321
Normalization at 850-870 °C, air cooling + Vacation at 560-620 °C, cooling with the furnace
801-1300 - - - - - 229-302
Forgings section up to 600 mm. Quenching in oil with 850-870 °C + Vacation at 550-580 °C, cooling with the furnace
- ≥700 ≥800 ≥12 - - -
Normalization at 850-870 °C, air cooling + Vacation at 560-620 °C, cooling with the furnace
501-800 ≥700 ≥850 ≥10 ≥30 ≥400 262-311
Forgings section up to 600 mm. Quenching in oil with 850-870 °C + Vacation at 550-580 °C, cooling with the furnace
- ≥650 ≥750 ≥12 - - -
Normalization at 850-870 °C, air cooling + Vacation at 560-620 °C, cooling with the furnace
301-500 ≥750 ≥900 ≥11 ≥30 ≥400 277-321
Forgings section up to 600 mm. Normalization at 850-870 °C, air cooling + Vacation at 500-550 °C, cooling with the furnace
- ≥800 ≥900 ≥11 - - 269-321
- ≥650 ≥800 ≥11 - - -

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 Steel difficult weldability.
Склонность к отпускной хрупкости Malosolone.
The temperature of forging Start - 1200 °C, the end - 850 °C.
Flock-sensitive sensitivity A highly sensitive.