Technical data for 22MnB4 CHQ wire, compliant with ISO 4954-Appendix B. View the chemical composition, mechanical properties, and related technical requirements for this grade.
Only data directly related to this material is shown here. Inspection, equipment, process and packaging information is linked separately.
1. Combinations of delivery conditions
Table B.1 - Combinations of heat treatment condition at delivery, product form, and applicable requirements
Heat-treatment condition at delivery
Symbol
Products form a
Applicable requirements in cases where the steel concerned has been ordered with reference to the steel names indicated in
Wire rod
Bar
Wire
T a b les B. 2,B.3,B.4 or B.5
Ta bles B. 2,B.3,B.4,B.5,B.6 or B,7
Optional
As hot-rolled or peeled
+AR or +PE
X
X
X
Chemical composition as specified in Table B.2
Mechanical properties as specified in Ta b les B.3, B.4 and B.5
Chemical compositior as specified in Table B.2
Mechanical properties as specified in Tables B.3, B.4 and B.5
Values for hardenability according to Ta b les B.6 and B.7
Supplementa- ry or special requirements as specified in Annex Eh
Cold drawn
+AR+C
-
X
X
Cold drawn + spheroidized
+AR+C+AC
-
X
X
Cold drawn + spheroidized+skin passed
+AR+C+AC +LC
-
X
X
Spheroidized or spheroidized+peeled
+AC or +AC +PE
X
X
X
Spheroidized+cold drawn
+AC+C
X
X
Treated to ferrite- pearlite structure and hardness range
+FP
-
X
-
Others
Other delivery conditions may be agreed at the time of ordering
a X=applicable,-=not applicable. b If agreed at the time of the enquiry and order.
2. Chemical composition
Table B.2 - Chemical composition of steels for surface hardening (applicable to cast analysis)
3. Mechanical properties
Table B.4 - Mechanical properties of boron-alloyed steel grades
Steel name
Diameter
Delivery condition
+AR
+AC or +AC+PE
+AR+C
+AR+C+AC
+AR+C+AC+LC
+AC+C
above mm
up to mm
Rm max. MPa
Za min %
Rm max. MPa
Z min. %
Rm max. MPa
Z min %
Rm max. MPa
Z min. %
Rm max. MPa
Z min. %
Rm max. MPa
Z min. %
22MnB4
2
5
—
—
520
64
560
62
—
5
10
600
55
520
62
720
53
500
64
540
62
630
59
10
40
600
55
520
62
710
53
500
64
540
62
620
59
a The values are provided for reference only.
4. Hardenability requirements
Table B.6 - Hardness limits for standard hardenability steel grades (H class)
Steel name
Symbol
Austenitizing temperature ℃±5℃
Limits of range
Hardness HRC at a distance from quenched end of test piece(in mm)of
1,5
3
5
7
9
11
13
15
20
25
30
35
40
22MnB4
+H
880
max.
49
48
47
45
42
39
35
32
24
20
—
min.
43
41
40
32
23
—
—
—
—
TECHNICAL NOTE
Application and ordering note
Chemical composition, mechanical properties, tolerances and delivery condition must be confirmed against the applicable standard edition, customer drawing and order specification.
