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IS 6603:2024 X50Cr15MoV Steel: Specifications & Listings

IS 6603:2024 X50Cr15MoV: X50Cr15MoV: martensitic corrosion resisting stainless steel, numerical symbol 420V. Specified in IS 6603:2024.

Category: Stainless Steel
Grade Details
GradeIS 6603:2024 X50Cr15MoV
Standard IS 6603:2024
ApplicationsGeneral purposes, semi-finished products, bars, wire rods and bright bars
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
EN 10088-1 X50CrMoV15 EN 10088-1:2014 Europe (CEN) No activity yet
EN 10088-3 X50CrMoV15 EN 10088-3:2014 Europe No activity yet
EN 10088-1 X55CrMo14 EN 10088-1:2014 Europe (CEN) No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
EN 10088-1 X50CrMoV15 EN 10088-1:2014 Strong Match
EN 10088-3 X50CrMoV15 EN 10088-3:2014 Strong Match
EN 10088-1 X50CrMoV15 EN 10088-1:2023 Strong Match
EN 10088-1 X55CrMo14 EN 10088-1:2014 Strong Match
EN 10088-1 X55CrMo14 EN 10088-1:2023 Strong Match
EN 10088-3 X70CrMo15 EN 10088-3:2014 Close Alternative
EN 10088-2 X50CrMoV15 EN 10088-2:2014 Close Alternative
EN 10088-1 X70CrMo15 EN 10088-1:2014 Close Alternative
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 V
0.45-0.55 <=1.00 <=1.00 <=0.040 <=0.015 14.0-15.0 0.50-0.80 0.10-0.20
Mechanical Properties
Tensile Strength <=900 MPa
Hardness <=280 HB
Condition Soft annealed (+A), conditions 1C, 1E, 1D, 1X, 1G and 2D, all sizes; hardness as printed

More data from IS 6603:2024

From the standard
Mechanical properties by heat treatment condition 1 rows
Thickness or diameter (mm)ConditionHardness HBRp0.2 min (MPa)Rm min (MPa)Rm max (MPa)A min, longitudinal (%)A min, transverse (%)KV2 min, longitudinal (J)KV2 min, transverse (J)
-+A280--900----
+A = soft annealed, +QT = quenched and tempered; for larger thickness the values shall be agreed upon.
Source: IS 6603:2024, Table 8
Hot forming and heat treatment 1 conditions
ConditionAnnealing temperature (deg C)Cooling after annealingQuenching temperature (deg C)Quenching mediumTempering temperature (deg C)
+A750 to 850furnace, air---
Hot forming 1100 to 800 deg C, cooling: slow cooling. Informative guideline (Annex A).
Source: IS 6603:2024, Table 23

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