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Cast iron VCH60

Designation

Name The value
Designation GOST Cyrillic ВЧ60
Designation GOST Latin BCh60
Transliteration VCh60
The chemical elements -

Description

Cast iron VCH60 used: for the manufacture of castings for stationary steam turbines, turbine equipment, nuclear power plants, elements of steam boilers and pipelines, hydraulic turbines, hydraulic locks, and other equipment engineering: casting 2 groups, operating at temperatures up to 250 °C, exposed to high static and dynamic loads and friction (pistons, housings gears, bearing, housing, worm wheels, bushings, bearing caps, nozzles, compressors, diaphragms, frames, Foundation, frame, exhaust parts, nozzles, compressors, gears, gear); castings group 1, operating at temperatures up to 350 °C and castings exposed to high specific pressures, static, dynamic loads and friction (diaphragms, clips, part, compressors, steam turbines, valves, compressors, nozzles, diffusers, blade, bearing shells, piston rings).

Standards

Name Code Standards
Cast iron В11 GOST 7293-85
Castings of cast iron (gray and malleable cast iron) В81 OST 108.962.01-85, OST 24.207.01-90

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu
GOST 7293-85 3.2-3.6 ≤0.02 ≤0.1 0.4-0.7 ≤0.15 2.4-2.8 ≤0.4 The rest ≤0.3
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 = 2.40-2.80%.

Mechanical characteristics

sT|s0,2, MPa σB, MPa d Brinell hardness number, MPa
Castings on OST 1 90077-72
≥370 ≥600 ≥3 192-277

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
d Elongation after rupture

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