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Cast iron CHH28

ChKh22S cast iron Cast iron CHN5G6D4SH ChS13 cast iron ChS15 cast iron ChS15M4 cast iron ChS17 cast iron ChS17M3 cast iron ChC16 cast iron ChC16M2 cast iron Cast iron CHX22 Cast iron CHN4X2 Cast iron CHX28 Cast iron CHX28D2 ChKh28P cast iron Cast iron CHX32 Cr9H5 cast iron ChU22Sh cast iron ChU30 cast iron ChU6C5 cast iron ChU7X2 cast iron Cast iron IChX28H2 Cast iron 250X25NT Cast iron 250X25T Cast iron 300X12ML Cast iron 300X32H2M2TL 320X20H cast iron Cast iron 340Cr18NiML Cast iron ICH300Cr18G3 Cast iron ICHX12M Cast iron IChX23FL Cast iron CHN20D2SH Cast iron CHG6S3SH ChG7X4 cast iron ChG8D3 cast iron Cast iron CHN11G7SH Cast iron CHN15D3Sh Cast iron CHN15D7 ChN17D3X2 cast iron (ZhCh-1) Cast iron CHN19Kh3SH

Designation

Name The value
Designation GOST Cyrillic ЧХ28
Designation GOST Latin ChX28
Transliteration ChH28
The chemical elements ZrCr28

Description

Cast iron CHH28 used: for the manufacture of parts with high corrosion resistance in solutions of acids, alkalis and salts, in gases containing sulfur or carbon dioxide and parts with high abrasive wear resistance (parts that operate at low mechanical loads in the environment of SO2 and SO3 in alkalis high concentration of nitric acid solutions and molten salts at temperatures up to 1000 °C; the details of centrifugal pumps, furnace fittings, retort for carburizing, nozzles, cylinders, casing spools, strokes furnaces pyrites; nozzles for sand-blasting machines and other parts exposed to abrasion, parts of food equipment, provodkoy fittings light mills).

Note

Chromium corrosion and heat-resistant (up to 1100−1300 °C) high-alloyed cast iron.

Standards

Name Code Standards
Castings with special properties (cast iron and steel) В83 GOST 7769-82

Chemical composition

Standard C S P Mn Cr Si Fe
GOST 7769-82 0.5-1.6 ≤0.08 ≤0.1 ≤1 25-30 0.5-1.5 The rest
Fe is the basis.
According to GOST 7769-82, nickel content is allowed up to 1.0% or copper up to 1.50%, introduced by natural alloyed iron, alloyed with steel scrap or magnesium-containing ligature.

Mechanical characteristics

σB, MPa Brinell hardness number, MPa
Castings on OST 1 90077-72
≥370 215-270

Description mechanical marks

Name Description
σB Limit short-term strength

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