EN 10217-7 is the material standard for stainless steel welded tubes for pressure purposes. This standard specifies the technical delivery conditions in two test categories for welded tubes of circular cross-section made of austenitic and austenitic-ferritic duplex stainless steel which are applied for pressure and corrosion resisting purposes at room temperature, at low temperatures or at elevated temperatures.
Application of EN 10217 7 Stainless Steel Pipe:
It is widely used in power plants, chemical industry, papermaking, energy, sewage, engineering and other fields, and is also commonly used as:
- line pipe
- boiler tube
- engineering pipe
- fuel pipe
- frame tube
- tubes for safety purposes
EN 10217-7 Mechanical Properties:
|
Steel grade
|
Tensile properties at Room Temperature
|
Impact properties
|
|
Proof Strength
|
Tensile strength
|
Elongation
|
Minimum average of 3 Charpy (J)
|
|
Rp0.2
|
Rp1.0
|
Rm
|
A min (%)
|
at RT
|
at -sub-zero temperature1
|
|
Steel name
|
Steel number
|
MPa
|
MPa
|
MPa
|
long
|
trans
|
long
|
trans
|
trans
|
|
Austenitic Stainless Steel
|
|
X2CrNi19-11
|
1.4306
|
180
|
215
|
460-680
|
40
|
35
|
100
|
60
|
60
|
|
X2CrNiN18-10
|
1.4311
|
270
|
305
|
550-760
|
35
|
30
|
100
|
60
|
60
|
|
X5CrNi18-10
|
1.4301 304
|
195
|
230
|
500-700
|
40
|
35
|
100
|
60
|
60
|
|
X6CrNiTi18-10
|
1.4541 321
|
200
|
235
|
500-730
|
35
|
30
|
100
|
60
|
60
|
|
X6CrNiNb18-10
|
1.4550 347
|
205
|
240
|
510-740
|
35
|
30
|
100
|
60
|
60
|
|
X2CrNiMo17-12-2
|
1.4404 316L
|
190
|
225
|
490-690
|
40
|
30
|
100
|
60
|
60
|
|
X5CrNiMo17-12-2
|
1.4401 316
|
205
|
240
|
510-710
|
40
|
30
|
100
|
60
|
60
|
|
XCrNiMoTi17-12-2
|
316Ti 1.4571
|
210
|
245
|
500-730
|
35
|
30
|
100
|
60
|
60
|
|
X2CrNiMo17-12-3
|
1.4432
|
190
|
225
|
490-690
|
40
|
30
|
100
|
60
|
60
|
|
X2CrNiMoN17-13-3
|
1.4429
|
295
|
330
|
580-800
|
35
|
30
|
100
|
60
|
60
|
|
X3CrNiMo17-13-3
|
1.4436
|
205
|
240
|
510-710
|
40
|
30
|
100
|
60
|
60
|
|
X2CrNiMo18-14-3
|
1.4435
|
190
|
225
|
490-690
|
40
|
30
|
100
|
60
|
60
|
|
X2CrNiMoN17-13-5
|
1.4439
|
285
|
315
|
580-800
|
35
|
30
|
100
|
60
|
60
|
|
X2CrNiMo18-15-4
|
1.4438 317L
|
220
|
250
|
490-690
|
35
|
30
|
100
|
60
|
60
|
|
X1NiCrMoCu31-27-4
|
1.4563
|
215
|
245
|
500-750
|
40
|
35
|
120
|
90
|
60
|
|
X1CrNiMoCu25-20-5
|
1.4539 904L
|
220
|
250
|
520-720
|
35
|
30
|
120
|
90
|
60
|
|
X1CrNiMoCuN20-18-7
|
1.4547
|
300
|
340
|
650-850
|
35
|
30
|
100
|
60
|
60
|
|
X1NiCrMoCuN25-20-7
|
1.4529
|
300
|
340
|
600-800
|
40
|
40
|
120
|
90
|
60
|
|
Duplex - Austenitic Ferritic Steel
|
|
X2CrNiN23-4
|
1.4362
|
400
|
----
|
600-820
|
25
|
25
|
120
|
90
|
40
|
|
X2CrNiMoN22-5-3
|
1.4462
|
450
|
----
|
700-920
|
25
|
20
|
120
|
90
|
40
|
|
X2CrNiMoN25-7-4
|
1.4410
|
550
|
----
|
800-1000
|
20
|
20
|
100
|
100
|
40
|
|
X2CrNiMoCuWN25-7-4
|
1.4501
|
550
|
----
|
800-1000
|
20
|
20
|
100
|
100
|
40
|
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