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Steel 45GL

Designation

Name The value
Designation GOST Cyrillic 45ГЛ
Designation GOST Latin 45GL
Transliteration 45GL
The chemical elements 45Mn

Description

Steel 45GL used: for the manufacture of castings of blocks, wheels, sprockets, jaw clutch, the large gear rims and other parts requiring high hardness and strength.

Standards

Name Code Standards
Castings, steel В82 GOST 977-88, TU 24-1-12-181-75

Chemical composition

Standard C S P Mn Si Fe
GOST 977-88 0.4-0.5 ≤0.04 ≤0.04 0.8-1.2 0.2-0.5 The rest
Fe is the basis.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d y, % kJ/m2, кДж/м2
Hardening in air, 840-860 °C + vacation at 600-650 °C, air cooling
100 ≥334 ≥628 ≥13 ≥20 ≥285
Normalization at 870-890 °C + vacation at 570-600 °C, air cooling
100 ≥334 ≥579 ≥14 ≥25 ≥285

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
d Elongation after rupture
y The relative narrowing
kJ/m2 Toughness

Technological properties

Name The value
Weldability limited weldability
Propensity to temper brittleness tend not
Flock-sensitive sensitivity not sensitive
Workability by cutting After quenching and tempering at NV 241-278 and blower SB=850-980 MPa Kn TV.SPL.=0,63 Kn b.St.=0.55

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