Characteristics of steel grade 20kp
Steel grade 20kp is high-quality structural carbon steel, the chemical composition of which meets the requirements of DSTU 7809 and GOST 1050.
Classification: Quality structural carbon steel.
Products: Steel plates, sheets and coils, semi-finished products, rolled sections including shapes.
Chemical composition of steel grade 20kp (ladle analysis) according to GOST 7809, %
| С | Si | Mn | S | P | Cr | Ni | As | Cu |
| 0,17 - 0,24 | ≤0,07 | 0,25 - 0,50 | ≤0,040 | ≤ 0,035 | ≤ 0,25 | ≤ 0,30 | ≤ 0,08 | ≤ 0,20 |
Mechanical properties of 20kp steel sheet products according to DSTU 7808/GOST 4041
| Tensile strength, N/mm2 | Elongation δ5, %, min | Elongation δ10, %, min | Hardness HB, no more |
| 340-490 | 28 | 24 | 127 |
Analogues
| USA | 1020, 1023, G10200, G10230, M1020, M1023 |
| Germany | Cq22 |
| European Union | C20E2C |
Application
Steel 20kp after cyanidation or carburizing is used in the manufacture of products with high surface hardness and low core strength – fastenings, axles, sprockets, pins; after normalization or without heat treatment, the steel is used in the production of parts operated in the temperature range from -20 to +425°C – fittings, connecting pieces, bolts, shafts, housings, flanges.
Welding
No restrictions (except for parts after chemical heat treatment). Welding methods: manual arc welding, automatic submerged arc welding and gas shielded welding, resistance spot welding.
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