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EN 10088-3:2014 X9CrNi18-9 Steel: Specifications & Listings

EN 10088-3:2014 X9CrNi18-9: X9CrNi18-9: austenitic corrosion resisting stainless steel, material number 1.4325. Specified in EN 10088-3:2014.

Category: Stainless Steel
Grade Details
GradeEN 10088-3:2014 X9CrNi18-9
Standard EN 10088-3:2014
ApplicationsGeneral purposes, semi-finished products, bars, rods, wire, sections and bright products
Equivalent / Similar Grades
Grade Standard Region Live on M-EX
BS 970 (Part 3) 302S31 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 303S31 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 303S42 BS 970 (Part 3):1991 UK No activity yet
BS 970 (Part 3) 325S31 BS 970 (Part 3):1991 UK No activity yet
EN 10088-1 X9CrNi18-9 EN 10088-1:2014 Europe (CEN) No activity yet
ASTM A959 302 ASTM A959:2011 USA No activity yet
ASTM A959 303Se ASTM A959:2011 USA No activity yet
ASTM A959 303 ASTM A959:2011 USA No activity yet
BS 970 (Part 3) 304S31 BS 970 (Part 3):1991 UK No activity yet
Grade ComparisonCompare With a Specific Grade →
Grade Standard Match
EN 10088-1 X9CrNi18-9 EN 10088-1:2014 Strong Match
EN 10088-1 X9CrNi18-9 EN 10088-1:2023 Strong Match
BS 970 (Part 3) 302S31 BS 970 (Part 3):1991 Strong Match
BS 970 (Part 1) 302S31 BS 970 (Part 1):1983 Strong Match
ASTM A959 302 ASTM A959:2011 Strong Match
ASTM A959 303Se ASTM A959:2011 Strong Match
BS 970 (Part 3) 303S42 BS 970 (Part 3):1991 Strong Match
ASTM A959 303 ASTM A959:2011 Strong Match
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
0.03-0.15 <=1.00 <=2.00 <=0.045 <=0.030 17.0-19.0 8.0-10.0
Mechanical Properties
Tensile Strength 550-750 MPa
Yield Strength >=190 MPa
Elongation >=40%
Hardness <=215 HB
Condition Solution annealed (+AT), conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 40 mm; Yield Strength is Rp0.2, Elongation is A (longitudinal), hardness for guidance only

More data from EN 10088-3:2014

From the standard
Mechanical properties by thickness or diameter 1 size range
Thickness or diameter (mm)Hardness HBW, max (guidance)Rp0.2 min (MPa)Rp1.0 min (MPa)Rm (MPa)A min, longitudinal (%)A min, transverse (%)KV2 min, longitudinal (J)KV2 min, transverse (J)
up to 40215190225550 to 75040---
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D; for rods only the tensile strength values apply.
Source: EN 10088-3:2014, Table 8
Hot forming and solution annealing guideline temperatures
Hot forming temperature
1200 to 900 deg C
Cooling after hot forming
air
Heat treatment symbol
+AT
Solution annealing temperature
1000 to 1100 deg C
Cooling after solution annealing
water, air
Informative guideline; cooling must be rapid enough to avoid intergranular corrosion.
Source: EN 10088-3:2014, Table A.1

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