EN 10088-2:2014 X1NiCrMoCu25-20-5 Steel: Specifications & Listings
EN 10088-2:2014 X1NiCrMoCu25-20-5: X1NiCrMoCu25-20-5: austenitic corrosion resisting stainless steel, material number 1.4539. 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
<=2.00
<=0.030
<=0.010
19.0-21.0
4.0-5.0
24.0-26.0
<=0.15
1.20-2.00
Mechanical Properties
Tensile Strength
530-730 MPa
Yield Strength
>=240 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
240
270
530 to 730
35
35
Hot rolled strip
13.5
220
260
530 to 730
35
35
Hot rolled plate
75
220
260
520 to 720
35
35
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
205
235
150
190
220
200
175
205
250
160
190
300
145
175
350
135
165
400
125
155
450
115
145
500
110
140
550
105
135
Minimum values, solution annealed (+AT).
Source: EN 10088-2:2014, Table 12
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
1060 to 1140 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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