Steel for carburizing and hardening and tempering 18H2N4WA,X19NiCrMo4,18H2N4MA,1.2764,18Cr2Ni4WA,18KH2N4MА,18Х2Н4МА,odkuwki - 

Construction alloy steel - Chromium-nickel-tungsten for carburizing and hardening and tempering 18H2N4WA PN-72/H-84035, 
intended for the production of the equipment specially loaded.
Steel grade

Standard

Chemical composition (%)
C
Mn
Si
P
S
Cu
Cr
Ni
Mo
other
18H2N4WA
PN
0,14
0,20
0,25
0,55
0,17
0,37
max
0,030
max
0,025
max
0,30
1,35
1,65
4,00
4,40
-
W* 0,80-1,20
18H2N4MA
18KH2N4MА
18Х2Н4МА
18Ch2N4MA
GOST
0,14
0,20
0,25
0,55
0,17
0,37
max
0,025
max
0,025
max
0,30
1,35
1,65
4,00
4,40
0,30
0,40
V max 0,05
W max 0,20
Ti max 0,06
N max 0,008
16 720
16720
CSN/STN
0,14
0,21
0,35
0,55
0,17
0,37
max
0,035
max
0,035
-
1,35
1,65
4,00
4,50
-
W 0,80-1,20
X 19 NiCrMo 4
X19NiCrMo4
1.2764

DIN
W.nr
0,16
0,22
0,15
0,45
0,10
0,40
max
0,030
max
0,030
-
1,10
1,40
3,80
4,30
0,15
0,25
W 0,30-0,50
Stal narzędziowa do
pracy na zimno
18Cr2Ni4WA
A52183
GB/T
-
0,13
0,19
0,30
0,60
0,17
0,37
max
0,025
max
0,025
max
0,025
1,35
1,65
4,00
4,50
max
0,10
W 0,80-1,20
835 M 15
835M15
BS
0,12
0,18
0,25
0,50
0,10
0,40
max
0,040
max
0,050
-
1,00
1,40
3,90
4,30
0,15
0,30
-
18Ch2N4MA
BDS
0,14
0,20
0,25
0,55
0,17
0,37
max
0,025
max
0,025
max
0,30
1,35
1,65
4,00
4,40
0,30
0,40
V max 0,05
W max 0,20
Ti max 0,03
SNCM 815
SNCM815
JIS
KSD 3709
0,12
0,18
0,30
0,60
0,15
0,35
max
0,030
max
0,030
max
0,030
0,70
1,00
4,00
4,50
0,15
0,30
-
 
* Tungsten can be replaced by molybdenum in the ratio 3W: 1 Mo in weight, the steel marking is changed into 18H2N4MA. 

Steels used for the parts and components with large cross sections, working at changeable loads that require a lot of strength and ductility such as 
crankshafts working at high speed, wheel gears, pins, shafts, reduction, rods. 

In the 18H2N4WA, 18H2N4MA grades or equivalent we provide round-rolled bars, forgings, round bars, square bars, flat bars, plates, cubes.
15HN 
17HNM 
18HGT 
18H2N2 
18H2N4WA,(18H2N4MA)
20H2N4A
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