EN 10088-3:2014 X6CrMnNiCuN18-12-4-2 Steel: Specifications & Listings
EN 10088-3:2014 X6CrMnNiCuN18-12-4-2: X6CrMnNiCuN18-12-4-2: austenitic corrosion resisting stainless steel, material number 1.4646. Specified in EN 10088-3:2014.
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
0.02-0.10
<=1.00
10.5-12.5
<=0.050
<=0.015
17.0-19.0
<=0.50
3.5-4.5
0.20-0.30
1.50-3.00
Mechanical Properties
Tensile Strength
650-850 MPa
Yield Strength
>=380 MPa
Elongation
>=30%
Hardness
<=260 HB
Condition
Solution annealed (+AT), conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 8 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 diameter1 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 8
260
380
400
650 to 850
30
30
100
60
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
Proof strength at elevated temperature10 temperatures
Temperature (deg C)
Rp0.2 min (MPa)
Rp1.0 min (MPa)
100
295
325
150
260
295
200
230
265
250
220
250
300
205
230
350
180
205
400
-
-
450
-
-
500
-
-
550
-
-
Minimum values, solution annealed (+AT).
Source: EN 10088-3:2014, Table 20
Hot forming and solution annealingguideline temperatures
Hot forming temperature
1150 to 850 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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