Construction alloy steel - Chromium-Nickel for carburizing and hardening and tempering steel 20H2N4A PN-72/H-84035 intended for the 
production of equipment specially loaded.
Steel grade

Standard

Chemical composition (%)

C
Mn
Si
P
S
Cu
Cr
Ni
Mo
other
20H2N4A
PN
0,16
0,22
0,30
0,60
0,17
0,37
max
0,030
max
0,025
max
0,30
1,25
1,65
3,25
3,65
-
-
20H2N4A
20KH2N4A
20Ch2N4A
20Х2Н4А
GOST
0,16
0,22
0,30
0,60
0,17
0,37
max
0,025
max
0,025
max
0,30
1,25
1,65
3,25
3,65
max
0,15
V- max 0,05
Ti max 0,03
W max 0,20
N max 0,008
20Ch2N4A
BDS
0,16
0,22
0,30
0,60
0,17
0,37
max
0,025
max
0,025
max
0,30
1,25
1,65
2,25
3,65
max
0,15
V- max 0,05
Ti max 0,03
W max 0,20
20Cr2Ni4
20Cr2Ni4A
GB/T
0,17
0,23
0,30
0,60
0,17
0,37
max
0,035
max
0,25
max
0,035
max
0,25
max
0,30
max
0,25
1,25
1,65
3,25
3,65
max
0,15
-

-
E 3316
E3316
3316

AISI

SAE
0,14
0,19
0,45
0,60
0,20
0,35
max
0,025
max
0,025
-
1,40
1,75
3,25
3,75
-
-
Steels for the production of large parts and machinery components with the increased core strength, exposed to very heavy loads, 
used among the others for: gears, pistons, pins, shafts, rollers.

In the 20H2N4A grade or equivalent we provide round-rolled bars, forgings easily forged, round bars, square bars, flat bars,
plates, cubes.
15HN
17HNM
18HGT
18H2N2
18H2N4WA,(18H2N4MA)
20H2N4A
Alfa-Tech Poland Alfa-Tech round bars www.atsteels.com Poland seamless tubes poland rury bezszwowe zaroodporne i specjalne importowane