IS 6603:2024 X02Cr24Ni4Mn3Mo2CuN Steel: Specifications & Listings
IS 6603:2024 X02Cr24Ni4Mn3Mo2CuN: X02Cr24Ni4Mn3Mo2CuN: austenitic-ferritic (duplex) corrosion resisting stainless steel, numerical symbol 2441. Specified in IS 6603:2024.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Chemical Composition (%)
C
Si
Mn
P
S
Cr
Mo
Ni
N
Cu
<=0.030
<=0.70
2.50-4.0
<=0.035
<=0.005
23.0-25.0
1.00-2.00
3.0-4.5
0.20-0.30
0.10-0.80
Mechanical Properties
Tensile Strength
>=650 MPa
Yield Strength
>=450 MPa
Elongation
>=25%
Hardness
<=290 HB
Condition
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 160 mm; Tensile Strength is a minimum as printed, hardness for guidance only
More data from IS 6603:2024
From the standard
Mechanical properties by thickness or diameter1 size range
Thickness or diameter (mm)
Hardness HB (guidance)
Rp0.2 min (MPa)
Rm min (MPa)
A min (%)
KV2 min (J)
up to 160
290
450
650
25
60
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D; for rods only the tensile strength values apply.
Source: IS 6603:2024, Table 6
Bright bars, solution annealed3 rows
Thickness or diameter (mm)
Rp0.2 min (MPa)
Rm (MPa)
A5 min (%)
KV2 min (J)
up to 10
700
900 to 1150
15
-
over 10 to 30
700
900 to 1100
20
-
over 30 to 160
450
650 to 900
25
60
Bright bars, conditions 2H, 2B, 2G or 2P; A5 valid for 5 mm and above.
Source: IS 6603:2024, Table 16
Proof strength at elevated temperature4 temperatures
Temperature (deg C)
Rp0.2 min (MPa)
100
385
150
345
200
325
250
315
Minimum values, solution annealed (+AT); for guidance only.
Source: IS 6603:2024, Table 11
Hot forming and solution annealingguideline temperatures
Hot forming temperature
1150 to 900 deg C
Cooling after hot forming
air
Heat treatment symbol
+AT
Solution annealing temperature
1000 to 1150 deg C
Cooling after solution annealing
water, air
Informative guideline (Annex A).
Source: IS 6603:2024, Table 21
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