EN 10088-2:2014 X2CrNiMoN18-12-4 Steel: Specifications & Listings
EN 10088-2:2014 X2CrNiMoN18-12-4: X2CrNiMoN18-12-4: austenitic corrosion resisting stainless steel, material number 1.4434. 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
<=0.030
<=1.00
<=2.00
<=0.045
<=0.015
16.5-19.5
3.0-4.0
10.5-14.0
0.10-0.20
Mechanical Properties
Tensile Strength
570-770 MPa
Yield Strength
>=290 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
290
320
570 to 770
35
35
Hot rolled strip
13.5
270
310
570 to 770
35
35
Hot rolled plate
75
270
310
540 to 740
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
211
-
150
185
218
200
167
198
250
155
183
300
145
175
350
140
169
400
135
164
450
131
160
500
129
158
550
127
157
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
1070 to 1150 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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