EN 10083-2:2006 C22R Steel: Specifications & Listings
EN 10083-2:2006 C22R: A low carbon steel for quenching and tempering to EN 10083-2:2006 (steel number 1.1149, non alloy special steel), with controlled sulphur of 0.020 to 0.040% for better machinability. Supplied as semi-finished products, bars, rod, wide flats, hot rolled strip, sheet and plate, and forgings. Quenched and tempered tensile strength 500 to 650 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
Cr+Mo+Ni
Mn
Mo
Ni
P
S
Si
0.17-0.24
<=0.40
<=0.63
0.40-0.70
<=0.10
<=0.40
<=0.030
0.020-0.040
<=0.40
Mechanical Properties
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Elongation
20% min
Tensile Strength
500 to 650 MPa
Yield Strength
340 MPa min
More data from EN 10083-2:2006
From the standard
Other composition limitsTable 3 and its notes
Steel number
1.1149
Steel class
Non alloy special steel (clause 4.1)
Pair grade
C22E (1.1151) has the same limits except sulphur, max. 0.035
Deoxidation
Killed (clause 6.2)
Sulphur range
Controlled sulphur range improves machinability (clause 7.2)
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)
Restricted options
Without hardenability or mechanical property requirements, a carbon range of 0.05 and/or Cr + Mo + Ni max. 0.45 may be agreed (Table 3, footnote d)
Elements not quoted in Table 3 are not intentionally added without the purchaser's agreement, other than for finishing the heat.
Source: EN 10083-2:2006, Table 3 and its notes
Mechanical properties, quenched and tempered (+QT)2 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
340
500 to 650
20
50
-
16 mm < d <= 40 mm, 8 mm < t <= 20 mm
290
470 to 620
22
50
50
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.
Source: EN 10083-2:2006, Table 9
Mechanical properties, normalized (+N)2 sizes
Size
Yield strength Re, min (MPa)
Tensile strength Rm, min (MPa)
Elongation A, min (%)
d <= 16 mm, t <= 16 mm
240
430
24
16 mm < d <= 100 mm, 16 mm < t <= 100 mm
210
410
25
For plates over 10 mm and bars over 100 mm diameter a hardness test may be agreed instead of the tensile test, converted to tensile strength according to EN ISO 18265 (clause 7.1.4).
Source: EN 10083-2:2006, Table 10
Maximum hardness by delivery conditionTable 8
Shearability
Shearable in the untreated condition under suitable conditions (clause 7.3.3)
Values also apply to the grades with hardenability requirements (+H, +HH, +HL); not applicable to continuously cast slabs not further deformed.
Source: EN 10083-2:2006, Table 8
Heat treatmentTable 13
Quenching
860 to 900 deg C
Quenching agent
Water
Tempering
550 to 660 deg C
Normalizing
880 to 940 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 10083-2:2006, Table 13
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