Construction alloy steel - for hardening and tempering chrome-nickel 20HN3A PN-72/H-84035
Destined for the production of the loaded equipment.
| Steel grade | Standard | Chemical composition (%) | |||||||||
| C | Mn | Si | P | S | Cu | Cr | Ni | Mo | other | ||
| 20HN3A | PN | 0,180,24 | 0,300,60 | 0,170,37 | max 0,030 | max 0,030 | max0,20 | 0,600,90 | 2,803,20 | - | Ti max0,030 |
| 20HN3A20KHN3A20XN3A20ChN3A | GOST | 0,170,24 | 0,300,60 | 0,170,37 | max 0,025 | max 0,025 | max 0,30 | 0,600,90 | 2,753,15 | - | - |
| 20ChN3A | BDS | 0,170,24 | 0,300,60 | 0,170,37 | max 0,025 | max 0,025 | max 0,30 | 0,600,90 | 2,753,15 | max 0,15 | Ti max 0,030V max 0,05W max 0,20 |
| 20CrNi3A | GB/T | 0,170,24 | 0,300,60 | 0,170,37 | max 0,025 | max 0,025 | max 0,25 | 0,600,90 | 2,753,15 | - | - |
Steels for the components and parts which require increased ductility and malleability core cross section to
fi 50, such as shafts, gears, bolts, etc.
20HN3A grade or equivalent is provided as round-rolled bars, forgings,
round bars, squares.
