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Steel 30KHML

Designation

Name The value
Designation GOST Cyrillic 30ХМЛ
Designation GOST Latin 30XML
Transliteration 30HML
The chemical elements 30CrMo

Description

30KHML steel is used: for the manufacture of castings to various industrial purpose.

Standards

Name Code Standards
Castings, steel В82 GOST 977-88
Castings with special properties (cast iron and steel) В83 TU 26-16-162-85

Chemical composition

Standard C S P Mn Cr Si Fe Mo
GOST 977-88 0.25-0.35 ≤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
Hardening in air, 840-870 °C to + leave in 530-670 °C, air cooling
100 ≥334 ≥677 ≥14 ≥25 ≥265
Normalization when 850-890 °C + vacation at 550-650 °C, air cooling
100 ≥285 ≥530 ≥18 ≥25 ≥304

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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