EN 10088-2:2014 X9CrMnNiCu17-8-5-2 Steel: Specifications & Listings
EN 10088-2:2014 X9CrMnNiCu17-8-5-2: X9CrMnNiCu17-8-5-2: austenitic corrosion resisting stainless steel, material number 1.4618. 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
Ni
N
Cu
<=0.10
<=1.00
5.5-9.5
<=0.070
<=0.010
16.5-18.5
4.5-5.5
<=0.15
1.00-2.50
Mechanical Properties
Tensile Strength
540-850 MPa
Yield Strength
>=230 MPa
Elongation
>=45%
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
230
250
540 to 850
45
45
Hot rolled strip
13.5
230
250
520 to 830
45
45
Hot rolled plate
75
210
240
520 to 830
45
45
Solution annealed condition; proof strength and elongation are minimum transverse values.
Source: EN 10088-2:2014, Table 7
Impact energy KV2 (ISO-V)3 rows
Product form
Max thickness (mm)
KV2 longitudinal, min (J)
KV2 transverse, min (J)
Cold rolled strip
8
100
60
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
160
200
150
150
180
200
125
157
250
120
145
300
110
135
350
104
129
400
100
125
450
95
122
500
92
120
550
90
120
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
1000 to 1100 deg C
Cooling after solution annealing
water, air
Informative guideline; cooling must be rapid enough to avoid intergranular corrosion.
Source: EN 10088-2:2014, Table A.1
Cold worked condition levels (process route 2H)cold worked levels
Available tensile strength levels
+C700 (700 to 850 MPa); +C850 (850 to 1000 MPa); +C1000 (1000 to 1150 MPa); +C1150 (1150 to 1300 MPa)
Available 0.2% proof strength levels
+CP350 (350 to 500 MPa); +CP500 (500 to 700 MPa); +CP700 (700 to 900 MPa); +CP900 (900 to 1100 MPa)
Only one parameter (tensile strength or proof strength) can be specified in the order.
Source: EN 10088-2:2014, Table 19 and 20
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