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
0,37
0,44
0,50
0,80
 
0,17
0,37
max
0,030
max
0,025
max
0,30
0,60
0,90
1,25
1,65
 
0,15
0,25
-
40 NiCrMo 6
40NiCrMo6

1.6565
 
DIN

W.nr
0,35
0,45
0,50
0,70
0,15
0,35
max
0,035
max
0,035
-
0,90
1,40
1,40
1,70
 
 
0,20
0,30
-
40HN2MA
40KHN2MA
40ChN2MA
40ХН2МА
GOST
0,37
0,44
0,50
0,80
0,17
0,37
 
max
0,025
 
max
0,025
max
0,20
 
0,60
0,90
1,25
1,65
 
0,15
0,25
V max 0,05
Ti max 0,03
W max 0,20
N max 0,008
 
40 NCD 7
40NCD7
AFNOR
0,38
0,43
0,65
0,85
0,15
0,35
max
0,025
max
0,025
-
0,70
0,90
1,65
2,00
0,20
0,30
-
36 NiCrMo 16
36NiCrMo16

1.6773
 
DIN

W.nr
0,32
0,39
0,50
0,80
max
0,40
max
0,025
max
0,025
-
1,60
2,00
3,60
4,10
 
 
0,25
0,45
-
40 NiCrMo 7
40NiCrMo7
UNI
 
0,38
0,43
 
0,50
0,80
 
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
0,60
0,90
0,15
0,35
max
0,030
max
0,030
max
0,30
0,60
1,00
 
1,60
2,00
 
0,15
0,30
-
G 43400
G43400
4340
A 29 (4340)
 
UNS

AISI
ASTM
 
0,38
0,43
 
0,65
0,85
 
0,22
0,35
 
max
0,035
 
max
0,040
-
 
0,70
0,90
 
1,65
2,00
 
0,20
0,30
-
G 43370
G43370
4337
A 519 (4337)
 
UNS

AISI
ASTM
0,35
0,40
0,65
0,85
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. 


We offer materials in grade 40HNMA, or equivalents: 40NiCrMo7, AISI 4340, 36NiCrMo16, 1.6773 and other, is provided as round-rolled bars, forgings, round bars,
 square bars, flat bars, plates, cubes, rings. 
Alfa-Tech Poland Alfa-Tech round bars www.atsteels.com Poland seamless tubes poland rury bezszwowe zaroodporne i specjalne importowane