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EN 10088-2:2014 X7CrNiAl17-7 Steel: Specifications & Listings

EN 10088-2:2014 X7CrNiAl17-7: X7CrNiAl17-7: precipitation hardening corrosion resisting stainless steel, material number 1.4568. Specified in EN 10088-2:2014.

Category: Stainless Steel
Grade Details
GradeEN 10088-2:2014 X7CrNiAl17-7
Standard EN 10088-2:2014
ApplicationsGeneral purposes, hot or cold rolled sheet/plate and strip
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
ASTM A959 631 ASTM A959:2011 USA No activity yet
EN 10088-1 X7CrNiAl17-7 EN 10088-1:2014 Europe (CEN) No activity yet
JIS G4305 SUS631 JIS G4305:2012 Japan No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
EN 10088-1 X7CrNiAl17-7 EN 10088-1:2014 Strong Match
EN 10088-1 X7CrNiAl17-7 EN 10088-1:2023 Strong Match
JIS G4305 SUS631 JIS G4305:2012 Strong Match
ASTM A959 631 ASTM A959:2011 Strong Match
EN 10088-1 X5CrNi17-7 EN 10088-1:2014 Close Alternative
ASTM A959 301 ASTM A959:2011 Close Alternative
ASTM A959 635 ASTM A959:2011 Close Alternative
JIS G4304 SUS631 JIS G4304:2021 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 Ni Al
<=0.09 <=0.70 <=1.00 <=0.040 <=0.015 16.0-18.0 6.5-7.8 0.70-1.50
Mechanical Properties
Tensile Strength <=1030 MPa
Elongation >=19%
Condition Solution annealed (+AT, delivery condition), cold rolled strip, up to 8 mm thick

More data from EN 10088-2:2014

From the standard
Mechanical properties by heat treatment condition 2 conditions
Product formMax thickness (mm)ConditionRp0.2 min (MPa)Rm (MPa)A80 min, under 3 mm thick (%)A min, 3 mm and over (%)
Cold rolled strip8+AT-<= 10301919
Cold rolled strip8+P14501310>= 145022
+AT = solution annealed, +P = precipitation hardened, +SR = strength relieved.
Source: EN 10088-2:2014, Table 11
Hot forming and heat treatment 2 conditions
ConditionSolution annealing (deg C)CoolingPrecipitation hardening
+AT1030 to 1050air-
+P1450945 to 965 for 10 minquick cooling to 20 deg C or below, within 1 h to minus 70 deg C, hold 8 h, reheat in air to plus 20 deg C1 h at 500 to 520 deg C
Hot forming 1150 to 900 deg C, air. Informative guideline.
Source: EN 10088-2:2014, Table A.5

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