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Steel 40KHML

Designation

Name The value
Designation GOST Cyrillic 40ХМЛ
Designation GOST Latin 40XML
Transliteration 40HML
The chemical elements 40CrMo

Description

40KHML steel is used: for the manufacture of castings to various industrial purpose.

Standards

Name Code Standards
Castings, steel В82 GOST 977-88

Chemical composition

Standard C S P Mn Cr Si Fe Mo
GOST 977-88 0.38-0.45 ≤0.04 ≤0.04 0.5-0.8 0.8-1.2 0.2-0.5 The rest 0.2-0.3
Fe is the basis.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d y, % kJ/m2, кДж/м2
Casting. Annealing in air with 830-860 °C to + Leave in 530-670 °C, air cooling
100 ≥481 ≥677 ≥11 ≥20 ≥206
Casting. Normalization at 850-880 °C + Vacation at 550-650 °C, air cooling
100 ≥334 ≥628 ≥14 ≥25 ≥206

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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