EN 10088-3:2014 X8CrMnNiN18-9-5 Steel: Specifications & Listings
EN 10088-3:2014 X8CrMnNiN18-9-5: X8CrMnNiN18-9-5: austenitic corrosion resisting stainless steel, material number 1.4374. 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
0.05-0.10
0.30-0.60
9.0-10.0
<=0.035
<=0.030
17.5-18.5
<=0.50
5.0-6.0
0.25-0.32
<=0.40
Mechanical Properties
Tensile Strength
700-900 MPa
Yield Strength
>=350 MPa
Elongation
>=35%
Hardness
<=260 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 diameter1 size range
Thickness or diameter (mm)
Hardness HBW, max (guidance)
Rp0.2 min (MPa)
Rp1.0 min (MPa)
Rm (MPa)
A min, longitudinal (%)
A min, transverse (%)
KV2 min, longitudinal (J)
KV2 min, transverse (J)
up to 10
260
350
380
700 to 900
35
-
-
-
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D; for rods only the tensile strength values apply.
Source: EN 10088-3:2014, Table 8
Wire in cold worked (2H) and annealed (2D) condition18 rows
Condition
Wire diameter d (mm)
Tensile strength (MPa)
Elongation min (%)
2H +C500
0.05 and above
500 to 700
-
2H +C600
0.05 and above
600 to 800
-
2H +C700
0.05 and above
700 to 900
-
2H +C800
0.05 and above
800 to 1000
-
2H +C900
0.05 and above
900 to 1100
-
2H +C1000
0.05 and above
1000 to 1250
-
2H +C1100
0.05 and above
1100 to 1350
-
2H +C1200
0.05 and above
1200 to 1450
-
2H +C1400
0.05 and above
1400 to 1700
-
2H +C1600
0.05 and above
1600 to 1900
-
2H +C1800
0.05 and above
1800 to 2100
-
2D +AT
over 0.05 to 0.10
max. 1100
20
2D +AT
over 0.10 to 0.20
max. 1050
20
2D +AT
over 0.20 to 0.50
max. 1000
30
2D +AT
over 0.50 to 1.00
max. 950
30
2D +AT
over 1.00 to 3.00
max. 900
30
2D +AT
over 3.00 to 5.00
max. 850
35
2D +AT
over 5.00 to 16.00
max. 800
35
2H levels: elongation depends on diameter and is to be agreed; 2D: tensile strength is maximum.
Source: EN 10088-3:2014, Table 18 and 19
Proof strength at elevated temperature10 temperatures
Temperature (deg C)
Rp0.2 min (MPa)
Rp1.0 min (MPa)
100
295
325
150
260
295
200
230
265
250
220
250
300
205
230
350
185
205
400
-
-
450
-
-
500
-
-
550
-
-
Minimum values, solution annealed (+AT).
Source: EN 10088-3:2014, Table 20
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
1000 to 1100 deg C
Cooling after solution annealing
water, air
Informative guideline; cooling must be rapid enough to avoid intergranular corrosion.
Source: EN 10088-3:2014, Table A.1
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