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Steel 30GL

Designation

Name The value
Designation GOST Cyrillic 30ГЛ
Designation GOST Latin 30GL
Transliteration 30GL
The chemical elements 30Mn

Description

30GL steel is used: for the manufacture of castings for the tool; casings of shock-absorbing units of freight cars.

Note

Steel martensitic class. Wear resistant steel, heat resistant.

Standards

Name Code Standards
Castings with special properties (cast iron and steel) В83 GOST 21357-87
Castings, steel В82 GOST 977-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 977-88 0.25-0.32 ≤0.04 ≤0.04 1.4-1.7 - 0.2-0.5 - The rest -
GOST 21357-87 0.25-0.35 ≤0.02 ≤0.02 1.2-1.6 ≤0.3 0.2-0.5 ≤0.3 The rest ≤0.3
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 570-610 °C air cooling
100 ≥481 ≥628 ≥16 ≥20 ≥235
Normalization at 860-890 °C + vacation at 550-650 °C, air cooling
100 ≥334 ≥579 ≥20 ≥25 ≥206
Casting. Quenching in water from 920-950 °C + vacation at 600-650 °C, air cooling (KCU-60)
- ≥490 ≥660 ≥10 ≥20 ≥3

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

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