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Steel 25ХГМНТБА (25ХГ2МНТБА)

Steel E B Steel Steel D27 D27S steel Steel D32 D36 steel Steel D40 D40S steel A40 steel E27 Steel E27S Steel E32 steel E36 Steel E40 steel E40S steel X18G13AN4 steel Steel D Steel 40G18Yu3F (Yu3F) 08Cr18Ni10Gt steel Steel 12G2MFT 12X18H10GT steel Steel 18Х20Н13 (ЭИ997) Steel 25KhGMNTBA (25KhG2MNTBA) Steel 26G2STa Steel 28ХГНМФД 38Kh3M1F1A steel A40S steel Steel 45Г17Ю3 (Ю3; ЭИ839) Steel 50G23Kh4FV7 (48VNNK-2) Steel 80G20F2Yu (F2) Steel A A27S steel A32 steel A36 steel

Designation

Name The value
Designation GOST Cyrillic 25ХГМНТБА
Designation GOST Latin 25XGMHTBA
Transliteration 25HGMNTBA
The chemical elements 25CrMnMoНTiNb
Name The value
Designation GOST Cyrillic 25ХГ2МНТБА
Designation GOST Latin 25XG2MHTBA
Transliteration 25HG2MNTBA
The chemical elements 25CrMn2MoНTiNb

Description

25ХГМНТБА steel is used: for the production of hot-rolled steel 52−110 mm. in diameter, used in the manufacture of electro-welded anchor chains III and IIIA categories of strength.

Note

High quality structural steel.

Standards

Name Code Standards
Sectional and shaped rolling В22 GOST 2590-2006
Sectional and shaped rolling В32 TU 14-1-3050-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu Ti Mo Nb
TU 14-1-3050-80 0.23-0.29 ≤0.025 ≤0.025 0.8-1.4 0.5-0.8 0.2-0.45 0.5-0.8 The rest 0.3 0.01-0.04 0.15-0.25 0.02-0.05
Fe is the basis.
According to TU 14-1-3050-80 the chemical stostav is given for steel 25HGMNTBA. At the request of the consumer, a rolling stock for chains of category IIIa made of steel grade 25ХГ2МНТБА is manufactured. In the steel grade 25HG2MNTBA content of Mn = 1.20-1.70%.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, % kJ/m2, кДж/м2
Bars of g/K for circuits category III strength. Normalization of 950-980 °C, quenching in oil or water from 880-900 °C + vacation at 610-630 °C, air cooling
539 686 17 40 588
Bars of g/K for circuits as IIIA category of strength. Normalization 950-980 °C + quenching in oil or water from 880-900 °C + vacation at 600-640 °C, air cooling
588 735 17 40 588

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

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