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Cast iron SCH24

Designation

Name The value
Designation GOST Cyrillic СЧ24
Designation GOST Latin CCh24
Transliteration SCh24
The chemical elements -

Description

Cast iron SCH24 applies: for production of casting blocks and cylinder heads in car and tractor; piston heads, bushings, cylinder covers and parts working in abrasion at elevated temperatures in the diesel engine; boilers for melting caustic soda, pipes, elbows and other parts resistant to alkaline solutions and molten alkalis in chemical engineering; casting parts of valves and actuators to it; cast connecting parts for pipelines.

Note

Pearlitic cast iron.

Standards

Name Code Standards
Cast iron В11 GOST 1412-85
Pipes from ferrous metals and alloys cast and connecting parts to them В61 GOST 5525-88, GOST 9583-75
Castings of cast iron (gray and malleable cast iron) В81 OST 24.207.01-90

Chemical composition

Standard C S P Mn Cr Si Ni Fe
GOST 1412-85 2.8-3.6 ≤0.12 ≤0.3 0.6-1.1 ≤0.8 1.15-2.4 ≤1.2 The rest
Fe is the basis.
The chemical composition is given on the basis of GOST 1412-54 data and reference literature based on obtaining the required time resistance at break and calculating the carbon equivalent, in GOST 1412-85 the chemical composition is not specified, while it is allowed to make castings from cast iron grade СЧ24 at the request of the consumer. Allowed low alloying of cast iron with various elements (chromium, nickel, copper, phosphorus, etc.).

Mechanical characteristics

σB, MPa Brinell hardness number, MPa
Castings in cast or heat treated condition for STP М319-95
≥240 -
Part of the connecting piping (sand casting) according to GOST 5525-88 (NV - in the center of a wall)
≥150 ≤250

Description mechanical marks

Name Description
σB Limit short-term strength

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