EN 10083-3:2006 35NiCr6 Steel: Specifications & Listings
EN 10083-3:2006 35NiCr6: A nickel chromium alloy steel for quenching and tempering to EN 10083-3:2006 (steel number 1.5815). Supplied as semi-finished products, bars, rod, wide flats, hot rolled strip, sheet and plate, and forgings. Quenched and tempered tensile strength 880 to 1080 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
Ni
P
S
Si
0.30-0.37
0.80-1.10
0.60-0.90
1.20-1.60
<=0.025
<=0.025
<=0.40
Mechanical Properties
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Elongation
12% min
Hardness
Soft annealed (+A): 223 HBW max
Tensile Strength
880 to 1080 MPa
Yield Strength
740 MPa min
More data from EN 10083-3:2006
From the standard
Other composition limitsTable 3 and its notes
Steel number
1.5815
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)3 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
740
880 to 1080
12
40
-
16 mm < d <= 40 mm, 8 mm < t <= 20 mm
740
880 to 1080
14
40
35
40 mm < d <= 100 mm, 20 mm < t <= 60 mm
640
780 to 980
15
40
35
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
223 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
58
58
58
57
57
55
55
55
53
53
50
50
Minimum, HRC
49
49
49
48
48
44
44
44
40
40
35
35
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.
58
58
58
57
57
55
55
55
53
53
50
50
-
-
-
+HH min.
53
53
53
52
52
50
50
50
48
48
45
45
-
-
-
+HL max.
54
54
54
53
53
49
49
49
45
45
40
40
-
-
-
+HL min.
49
49
49
48
48
44
44
44
40
40
35
35
-
-
-
Restricted scatter bands by distance from the quenched end.
Source: EN 10083-3:2006, Table 6
Heat treatmentTable 11
Quenching
840 to 860 deg C
Quenching agent
Oil or water
Tempering
530 to 630 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).
Source: EN 10083-3:2006, Table 11
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