EN 10088-2:2014 X2CrNiMoN29-7-2 Steel: Specifications & Listings
EN 10088-2:2014 X2CrNiMoN29-7-2: X2CrNiMoN29-7-2: austenitic-ferritic (duplex) corrosion resisting stainless steel, material number 1.4477. 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
<=0.030
<=0.50
0.80-1.50
<=0.030
<=0.015
28.0-30.0
1.50-2.60
5.8-7.5
0.30-0.40
<=0.80
Mechanical Properties
Tensile Strength
800-1050 MPa
Yield Strength
>=650 MPa
Elongation
>=20%
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)
Rm (MPa)
A80 min, under 3 mm thick (%)
A min, 3 mm and over (%)
Cold rolled strip
8
650
800 to 1050
20
20
Hot rolled strip
13.5
550
750 to 1000
20
20
Hot rolled plate
75
550
750 to 1000
20
20
Solution annealed condition; proof strength is the minimum transverse value.
Source: EN 10088-2:2014, Table 8
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 8
Proof strength at elevated temperature4 temperatures
Temperature (deg C)
Rp0.2 min (MPa)
100
500
150
460
200
430
250
400
Minimum values, solution annealed (+AT).
Source: EN 10088-2:2014, Table 13
Hot forming and solution annealingguideline temperatures
Hot forming temperature
1150 to 1000 deg C
Cooling after hot forming
air
Heat treatment symbol
+AT
Solution annealing temperature
1040 to 1120 deg C
Cooling after solution annealing
water, air
Informative guideline; cooling must be rapid enough to avoid precipitation.
Source: EN 10088-2:2014, Table A.2
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