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39MnCrB6-2

 
EN 10083-3:2002, Number: 1.7189
 
JUS
-
DIN
39MnCrB6-2
BS
-
GOST
-
AISI
-
UNI
 
NF
-

 

Under EN 10083-3:2002 standard, the 39MnCrB62 steel is one of the most widely used precipitation hardening

grades in the business. While soft and ductile in the solution annealed condition, the 39MnCrB62 steel is capable of high

properties with a single precipitation or aging treatment.

 
39MnCrB62  STEEL PLATE Chemical analysis -% by mass
Chemical elements
C
Si
Mn
P
S
Cr
B
%, by masse
0,36 - 0,42
£ 0,40
1,40-1,70
max 0.025
max 0,035
0,30-0,60
0,0008-0,0050
Permissible deviation
± 0.02
± 0,03
± 0,05
+ 0.005
+ 0.005
± 0,05
± 0.03
 
39MnCrB62  STEEL SHEET Mechanical properties in the quenched and 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)
900
850
800*
-
-
Rm (MPa)
1100-1350
1050-1250
1000-1200*
-
-
A min. (%)
12
12
12*
-
-
Z min. (%)
50
50
50*
-
-
KV min. (J)
40
40
40*
-
-
*For 40mm < d Ω 60mm and 20mm < t Ω 40mm.
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
59
59
58
58
58
57
57
56
55
54
-
-
-
min.
51
51
51
51
50
50
50
49
47
45
40
35
32
-
-
 
Heat treatment conditions – informative
Hardening temperature in the end quench test
Quenching temperature
Quenching in
Tempering temperature
8500±50C
840-880 0C
Oil
400-600 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
-
Condition +A is not applicable for boron steels
 
Annex C
Reference valuse for the maximum diameter at a certain core hardness of steels with boron
Hardening temperature
0C
Core hardness *
HRC
Approximate maximum diameter
mm
 
Water
Oil
 
850
45
95
80
*For 80% martensite

Source:

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