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Cast iron VCH70

Designation

Name The value
Designation GOST Cyrillic ВЧ70
Designation GOST Latin BCh70
Transliteration VCh70
The chemical elements -

Description

Cast iron VCH70 used: for the manufacture of products with high strength and satisfactory ductility.

Standards

Name Code Standards
Cast iron В11 GOST 7293-85

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 7293-85 3.2-3.6 ≤0.015 ≤0.1 0.4-0.7 ≤0.15 2.6-2.9 ≤0.6 The rest ≤0.4
Fe is the basis.
According to GOST 7293-85 the chemical composition is given for castings with wall thickness up to 50 mm inclusive. For castings with a wall thickness exceeding 50 to 100 mm, the recommended content is C = 3.00-3.30%, Si = 2.60-2.90%.

Mechanical characteristics

sT|s0,2, MPa σB, MPa d Brinell hardness number, MPa
Castings on OST 1 90077-72
≥420 ≥700 ≥2 228-302

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength