EN 10088-3:2014 X2CrNiMoN29-7-2 Steel: Specifications & Listings
EN 10088-3:2014 X2CrNiMoN29-7-2: X2CrNiMoN29-7-2: austenitic-ferritic (duplex) corrosion resisting stainless steel, material number 1.4477. 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
<=0.030
<=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
>=25%
Hardness
<=310 HB
Condition
Solution annealed (+AT), conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 10 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 diameter2 size ranges
Thickness or diameter (mm)
Hardness HBW, max (guidance)
Rp0.2 min (MPa)
Rm (MPa)
A min, longitudinal (%)
KV2 min, longitudinal (J)
up to 10
310
650
800 to 1050
25
100
over 10 to 160
310
550
750 to 1000
25
100
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D; for rods only the tensile strength values apply.
Source: EN 10088-3:2014, Table 9
Proof strength at elevated temperature4 temperatures
Temperature (deg C)
Rp0.2 min, +AT (t <= 10 mm) (MPa)
Rp0.2 min, +AT (10 < t <= 160 mm) (MPa)
100
550
500
150
500
460
200
470
430
250
440
400
Minimum values.
Source: EN 10088-3:2014, Table 21
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
1040 to 1120 deg C
Cooling after solution annealing
water
Informative guideline; cooling must be rapid enough to avoid precipitation.
Source: EN 10088-3:2014, Table A.2
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