|
37Cr4
EN
10083-3:2002, Number: 1.7034
|
|
Comparison of
steel grades
|
|
JUS
|
Č.4134
|
|
DIN
|
37Cr4
|
|
GOST
|
SH10, 40H
|
|
AISI
|
A322, 5135
|
|
BS
|
530A36, 530M36
|
|
UNI
|
37Cr4
|
|
NF
|
37Cr4, 38C4
|
Chemical
analysis -% by mass*
|
Chemical
elements
|
C
|
Si
|
Mn
|
P
max.
|
S
max.
|
Cr
|
-
|
-
|
-
|
|
%,
by mass
|
0,34- 0,41
|
£ 0,40
|
0,60 - 0,90
|
0.035
|
0.035
|
0,90-1,20
|
-
|
-
|
|
|
Permissible
deviations
|
± 0.02
|
+ 0,03
|
± 0,04
|
+ 0.005
|
+ 0.005
|
± 0.05
|
-
|
-
|
-
|
* At the option the manufacturer the elements aluminium,
titanium, vanadium and niobium may be added singly or in combination for grain
control
purposes. Elements not quoted in tables shall not be added
intentionally to the steel without the agreement of the purchaser, except for
the purpose
of finishing the heat.
Mechanical
properties in the quenchedand tempered condition
|
|
d ≤ 16mm oder t ≤ 8mm
|
16mm < d ≤ 40mm
8mm < t ≤ 20mm
|
40mm < d ≤ 100mm
20mm < t ≤ 60mm
|
100mm < d ≤ 160mm
60mm < t ≤ 100mm
|
160mm < d ≤ 250mm
100mm < t ≤ 160mm
|
|
Re min (MPa)
|
750
|
630
|
510
|
-
|
-
|
|
Rm (MPa)
|
950-1150
|
850-1000
|
750-900
|
-
|
-
|
|
A min. (%)
|
11
|
13
|
14
|
-
|
-
|
|
Z min. (%)
|
35
|
40
|
40
|
-
|
-
|
|
KV min. (J)
|
30
|
35
|
35
|
-
|
-
|
Jominy’s
hardenability band
|
Distance in mm
from quenched end Hardness in HRC (mm)
|
|
mm
|
1,5
|
3
|
5
|
7
|
9
|
11
|
13
|
15
|
20
|
25
|
30
|
35
|
40
|
45
|
50
|
|
+H
|
max.
|
59
|
59
|
58
|
57
|
55
|
52
|
50
|
48
|
42
|
39
|
37
|
36
|
35
|
34
|
33
|
|
min.
|
51
|
50
|
48
|
44
|
39
|
36
|
33
|
31
|
26
|
24
|
22
|
20
|
-
|
-
|
-
|
|
+HH*
|
max.
|
59
|
59
|
58
|
57
|
55
|
52
|
50
|
48
|
42
|
39
|
37
|
36
|
35
|
34
|
33
|
|
min.
|
54
|
53
|
51
|
48
|
44
|
41
|
39
|
37
|
31
|
29
|
27
|
25
|
24
|
23
|
22
|
|
+HL*
|
max.
|
56
|
56
|
55
|
53
|
50
|
47
|
44
|
42
|
37
|
34
|
32
|
31
|
30
|
29
|
28
|
|
min.
|
51
|
50
|
48
|
44
|
39
|
36
|
33
|
31
|
26
|
24
|
22
|
20
|
-
|
-
|
-
|
Heat treatment
conditions – informative
|
Hardening
temperature in the end quench test
|
Quenching
temperature
|
Quenching
in
|
Tempering
temperature
|
|
8500±50C
|
825-890
0C
|
Oil
or water
|
540-680
0C
|
Maximum
hardness for products to be supplied in the ’’treated to improve shearability
(+S)’’ or
’’soft annealed
(+A)’’ condition
|
+S
HB max.
|
+A
HB max.
|
|
255
|
235
|
|
37Cr4
EN 10250-3:1999, Number: 1.7034
|
|
Comparison of steel grades
|
|
JUS
|
Č.4134
|
|
DIN
|
37Cr4
|
|
GOST
|
SH10, 40H
|
|
AISI
|
A322, 5135
|
|
BS
|
530A36, 530M36
|
|
UNI
|
37Cr4
|
|
NF
|
37Cr4, 38C4
|
Chemical analysis -% by mass*
|
Chemical elements
|
C
|
Si
|
Mn
|
P
max.
|
S
max.
|
Cr
|
-
|
-
|
-
|
|
%, by mass
|
0,34- 0,41
|
£ 0,40
|
0,60 - 0,90
|
0.035
|
0.035
|
0,90-1,20
|
-
|
-
|
|
|
Permissible deviations
|
± 0.02
|
+ 0,03
|
± 0,04
|
+ 0.005
|
+ 0.005
|
± 0.05
|
-
|
-
|
-
|
* At
the option the manufacturer the elements aluminium, titanium, vanadium and
niobium may be added singly or in combination for grain control
purposes. Elements not quoted in tables shall not be added intentionally to
the steel without the agreement of the purchaser, except for the purpose
of finishing the heat.
Mechanical properties in the quenched and tempered condition
|
Trickness of ruling
section tR
|
|
Diameter in mm
|
≤ 70mm tR
(longitudinal)
|
70< tR
≤160mm
|
160<tR≤330mm
|
|
Re min (N/mm2)
|
510
|
-
|
-
|
|
Rm min (N/mm2)
|
750
|
-
|
-
|
|
A % min..
|
14
|
-
|
-
|
|
KV min (J)
|
35
|
-
|
-
|
Heat treatment conditions **
|
Quenching temperature,
0C
|
Tempering temperature, 0C
|
|
825 to 865
|
540 to 680
|
|
 |
|
|
Zeljezara Niksic - Niksic, Montenegro
Phone: (+382) 20 234-616, (+382) 40 202 900 | Fax: (+382) 40 202-023
 | Website: www.znksteel.com
|
|
