Construction alloy steel- for hardening and tempering nickel-chromium-molybdenum 40HNMA PN-89/H-84030/04
| Steel grade | Standard |
Chemical composition (%) |
|||||||||
| C |
Mn |
Si |
P |
S |
Cu |
Cr |
Ni |
Mo |
other |
||
| 40HNMA | PN | 0,370,44 |
0,500,80 | 0,17 0,37 | max 0,030 | max 0,025 | max 0,30 |
0,600,90 | 1,251,65 | 0,150,25 | - |
| 40 NiCrMo 6 40NiCrMo6
1.6565 |
DIN W.nr |
0,350,45 | 0,500,70 | 0,15 0,35 | max 0,035 | max 0,035 | - | 0,901,40 | 1,401,70 | 0,20 0,30 | - |
| 40HN2MA 40KHN2MA40ChN2MA40ХН2МА | GOST | 0,370,44 | 0,500,80 | 0,17 0,37 |
max 0,025 | max 0,025 | max 0,20 | 0,600,90 | 1,251,65 |
0,15 0,25 | V max 0,05Ti max 0,03W max 0,20N max 0,008 |
| 40 NCD 740NCD7 |
AFNOR | 0,380,43 | 0,650,85 | 0,15 0,35 | max 0,025 | max 0,025 | - | 0,70 0,90 | 1,65 2,00 | 0,20 0,30 | - |
| 40 NiCrMo 7 40NiCrMo7 | UNI | 0,380,43 | 0,500,80 | 0,15 0,40 | max 0,025 | max 0,020 | - | 0,70 0,90 | 1,65 2,00 | 0,20 0,30 | - |
| SNCM 439 SNCM439 | JIS | 0,36 0,43 | 0,600,90 | 0,15 0,35 | max 0,030 | max 0,030 | max 0,30 | 0,601,00 | 1,60 2,00 | 0,15 0,30 | - |
| G 43400G43400
4340 A 29 (4340) |
UNS AISI ASTM |
0,380,43 | 0,650,85 | 0,22 0,35 | max 0,035 | max 0,040 | - | 0,70 0,90 | 1,65 2,00 | 0,20 0,30 | - |
| G 43370G43370
4337 A 519 (4337) |
UNS AISI ASTM |
0,350,40 | 0,650,85 | 0,20 0,35 | max 0,025 | max 0,025 | - | 0,70 0,90 | 1,65 2,00 | 0,20 0,30 | - |
Steel with high hardenability, destined for heavily loaded parts and components: motor vehicles, engines and aircrafts.
The parts exposed to impact, torsion and vibration, with the thickness of 100 mm: crank shafts, connecting rods,
hub propellers, parts of pumps, presses, compressors, parts working at higher temperatures 400 - 450 C
The rotors, shafts, rings and discs in steam turbines, very responsible bolts and screws of large diameter,
non-carburized gears and other heavily loaded parts subjected to impact.
40HNMA grade or equivalent is provided as round-rolled bars, forgings,round bars, square bars, flat bars,
plates, cubes, rings, rings.
