EN 10088-2:2014 X1CrNiMoCuN20-18-7 Steel: Specifications & Listings
EN 10088-2:2014 X1CrNiMoCuN20-18-7: X1CrNiMoCuN20-18-7: austenitic corrosion resisting stainless steel, material number 1.4547. Specified in EN 10088-2:2014.
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
<=0.020
<=0.70
<=1.00
<=0.030
<=0.010
19.5-20.5
6.0-7.0
17.5-18.5
0.18-0.25
0.50-1.00
Mechanical Properties
Tensile Strength
650-850 MPa
Yield Strength
>=320 MPa
Elongation
>=35%
Condition
Solution annealed (+AT), cold rolled strip, up to 8 mm thick; Yield Strength is Rp0.2 (transverse), Elongation is A80 for under 3 mm thick
More data from EN 10088-2:2014
From the standard
Mechanical properties by product form and thickness3 product forms
Product form
Max thickness (mm)
Rp0.2 min (MPa)
Rp1.0 min (MPa)
Rm (MPa)
A80 min, under 3 mm thick (%)
A min, 3 mm and over (%)
Cold rolled strip
8
320
350
650 to 850
35
35
Hot rolled strip
13.5
300
340
650 to 850
35
35
Hot rolled plate
75
300
340
650 to 850
40
40
Solution annealed condition; proof strength and elongation are minimum transverse values.
Source: EN 10088-2:2014, Table 7
Impact energy KV2 (ISO-V)2 rows
Product form
Max thickness (mm)
KV2 longitudinal, min (J)
KV2 transverse, min (J)
Hot rolled strip
13.5
100
60
Hot rolled plate
75
100
60
Applies to products more than 10 mm thick, ISO-V notch, room temperature.
Source: EN 10088-2:2014, Table 7
Proof strength at elevated temperature10 temperatures
Temperature (deg C)
Rp0.2 min (MPa)
Rp1.0 min (MPa)
100
230
270
150
205
245
200
190
225
250
180
212
300
170
200
350
165
195
400
160
190
450
153
184
500
148
180
550
-
-
Minimum values, solution annealed (+AT).
Source: EN 10088-2:2014, Table 12
Hot forming and solution annealingguideline temperatures
Hot forming temperature
1200 to 1000 deg C
Cooling after hot forming
air
Heat treatment symbol
+AT
Solution annealing temperature
1150 to 1200 deg C
Cooling after solution annealing
water, air
Informative guideline; cooling must be rapid enough to avoid intergranular corrosion.
Source: EN 10088-2:2014, Table A.1
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