Material data sheet
Flange's Raw Material - Carbon Steel Ct20 for Russian Steel Flanges GOST 12820-80, GOST 12821-80, GOST 33259-2015
Material grade reference for flange purchasing, including chemical composition and mechanical properties.
Chemical composition / mechanical property
Check material standards, chemical composition, mechanical properties and purchasing references.
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- Data tables
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- Related references
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Data tables
Reference tables
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Chemical Requirements
| Element / Component | Composition % |
| Carbon ( C ) | 0.17 - 0.24 |
| Manganese ( Mn ) | 0.35 - 0.65 |
| Phosphorus ( P ) | 0.035 max |
| Sulphur ( S ) | 0.035 max |
| Silicon ( Si ) | 0.17 - 0.37 |
| Aluminium ( Al ) | - |
| Chromium ( Cr ) | 0.25 max |
| Copper ( Cu) | 0.25 max |
| Nickel ( Ni ) | 0.25 max |
| Titanium ( Ti) | - |
| Vanadium ( V ) | - |
| Molybdenum ( Mo ) | - |
| Niobium ( Nb ) | - |
| Nitrogen ( N ) | - |
Mechanical Requirements
| Items | Value |
| Yield Strength ReH N/mm2 | - |
| Tensile Strength Rm N/mm2 | 420 - 530 |
| Elongation ( A ) | 24% min |
| Reduction ( Z ) | - |
| Impact Test ( J ) | - |
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