EN 10083-3:2006 51CrV4 Steel: Specifications & Listings
EN 10083-3:2006 51CrV4: A chromium vanadium alloy steel for quenching and tempering to EN 10083-3:2006 (steel number 1.8159). Supplied as semi-finished products, bars, rod, wide flats, hot rolled strip, sheet and plate, and forgings. Quenched and tempered tensile strength 1100 to 1300 MPa for ruling sections up to 16 mm.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Cr
Mn
P
S
Si
V
0.47-0.55
0.90-1.20
0.70-1.10
<=0.025
<=0.025
<=0.40
0.10-0.25
Mechanical Properties
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Elongation
9% min
Hardness
Soft annealed (+A): 248 HBW max
Tensile Strength
1100 to 1300 MPa
Yield Strength
900 MPa min
Typical Available Sizes
Round Bar
8mm–75mm dia
Flat Bar
15×5mm–80×15mm
Wire
1mm–12mm dia
Sizes are indicative. Contact seller for exact availability.
More data from EN 10083-3:2006
From the standard
Other composition limitsTable 3 and its notes
Steel number
1.8159
Steel class
Alloy special steel (clause 4.1)
Deoxidation
Killed
Improved machinability
Sulphur up to about 0.10 may be supplied on request; the manganese upper limit may then rise by 0.15 (Table 3, footnote c)
Elements not quoted in Table 3 are not intentionally added without the purchaser's agreement, other than for finishing the heat. With hardenability or quenched and tempered property requirements, slight deviations within Table 4 are permitted except for carbon, phosphorus and sulphur.
Source: EN 10083-3:2006, Table 3 and its notes
Mechanical properties, quenched and tempered (+QT)5 sections
Ruling section
Yield strength Re, min (MPa)
Tensile strength Rm (MPa)
Elongation A, min (%)
Reduction of area Z, min (%)
Impact KV, min (J)
d <= 16 mm, t <= 8 mm
900
1100 to 1300
9
40
-
16 mm < d <= 40 mm, 8 mm < t <= 20 mm
800
1000 to 1200
10
45
30
40 mm < d <= 100 mm, 20 mm < t <= 60 mm
700
900 to 1100
12
50
30
100 mm < d <= 160 mm, 60 mm < t <= 100 mm
650
850 to 1000
13
50
30
160 mm < d <= 250 mm, 100 mm < t <= 160 mm
600
800 to 950
13
50
30
Re is the upper yield strength or, if no yield phenomenon occurs, the 0.2% proof strength; A on gauge length 5.65 times the root of the original cross section; KV on longitudinal Charpy V-notch test pieces, average of 3 values, no single value below 70% of the minimum. Ruling sections as in EN 10083-1:2006, Annex A. Sizes not listed are not covered by the standard.
Source: EN 10083-3:2006, Table 8
Maximum hardness by delivery conditionTable 7
Treated to improve shearability (+S), max
Not specified
Soft annealed (+A), max
248 HBW
Values also apply to the grades with hardenability requirements (+H, +HH, +HL); not applicable to continuously cast slabs not further deformed. Where shearability is important, order this steel soft annealed.
Source: EN 10083-3:2006, Table 7
Hardenability, end quench test (+H)Hardness band
Hardness band (HRC, minimum to maximum) by distance from the quenched end (mm)
1.5
3
5
7
9
11
13
15
20
25
30
35
40
45
50
Distance from quenched end (mm)
1.5
3
5
7
9
11
13
15
20
25
30
35
40
45
50
Maximum, HRC
65
65
64
64
63
63
63
62
62
62
61
60
60
59
58
Minimum, HRC
57
56
56
55
53
52
50
48
44
41
37
35
34
33
32
Applies when ordered with the symbol +H. End quench test to EN ISO 642, quenching from 850 ± 5 deg C (Table 11).
Source: EN 10083-3:2006, Table 5
Restricted hardenability (+HH, +HL), HRCTable 6
Limit
1.5 mm
3 mm
5 mm
7 mm
9 mm
11 mm
13 mm
15 mm
20 mm
25 mm
30 mm
35 mm
40 mm
45 mm
50 mm
+HH max.
65
65
64
64
63
63
63
62
62
62
61
60
60
59
58
+HH min.
60
59
59
58
56
56
54
53
50
48
45
43
43
42
41
+HL max.
62
62
61
61
60
59
59
57
56
55
53
52
51
50
49
+HL min.
57
56
56
55
53
52
50
48
44
41
37
35
34
33
32
Restricted scatter bands by distance from the quenched end.
Source: EN 10083-3:2006, Table 6
Heat treatmentTable 11
Quenching
820 to 870 deg C
Quenching agent
Oil
Tempering
540 to 680 deg C
End quench test
850 ± 5 deg C
Guidance values except the end quench test temperature, which is mandatory. Lower quenching temperatures generally for water, upper for oil; austenitizing at least 30 min, tempering at least 60 min (guide values).