EN 10028-2:2017 13CrMoSi5-5 Steel: Specifications & Listings
EN 10028-2:2017 13CrMoSi5-5: 13CrMoSi5-5: chromium molybdenum silicon alloy special steel for pressure purposes with specified elevated temperature properties. Specified in EN 10028-2:2017.
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
N
Cr
Cu
Mo
Ni
<=0.17
0.50-0.80
0.40-0.65
<=0.015
<=0.005
<=0.012
1.00-1.50
<=0.30
0.45-0.65
<=0.30
Mechanical Properties
Tensile Strength
510-690 MPa
Yield Strength
>=310 MPa
Elongation
>=20%
Condition
Usual delivery condition normalized and tempered (+NT), nominal thickness up to 60 mm; transverse direction, Yield Strength is ReH, Elongation is A
More data from EN 10028-2:2017
From the standard
Mechanical properties by thickness5 thickness ranges
Delivery condition
Thickness t (mm)
Yield strength ReH, min (MPa)
Tensile strength Rm (MPa)
Elongation A, min (%)
+NT
up to 60
310
510 to 690
20
+NT
over 60 to 100
300
480 to 660
20
+QT
up to 60
400
510 to 690
20
+QT
over 60 to 100
390
500 to 680
20
+QT
over 100 to 250
380
490 to 670
20
Transverse direction; usual delivery condition as stated per row.
Source: EN 10028-2:2017, Table 3
Impact energy KV2 (Charpy V-notch)2 rows
Condition or thickness
KV2 min at -20 deg C (J)
KV2 min at 0 deg C (J)
KV2 min at +20 deg C (J)
+NT
-
27
34
+QT
27
34
40
A dash means a value may be agreed at the time of enquiry and order; 40 J may be agreed at +20 deg C where 31 or 27 J is listed.
Source: EN 10028-2:2017, Table 3
Proof strength at elevated temperature5 thickness ranges, 50 to 500 deg C
Thickness t (mm)
Rp0.2 min at 50 deg C (MPa)
Rp0.2 min at 100 deg C (MPa)
Rp0.2 min at 150 deg C (MPa)
Rp0.2 min at 200 deg C (MPa)
Rp0.2 min at 250 deg C (MPa)
Rp0.2 min at 300 deg C (MPa)
Rp0.2 min at 350 deg C (MPa)
Rp0.2 min at 400 deg C (MPa)
Rp0.2 min at 450 deg C (MPa)
Rp0.2 min at 500 deg C (MPa)
+NT, up to 60
299
283
268
255
244
233
223
218
206
-
+NT, over 60 to 100
289
274
260
247
236
225
216
211
199
-
+QT, up to 60
384
364
352
344
339
335
330
322
309
-
+QT, over 60 to 100
375
355
343
335
330
327
322
314
301
-
+QT, over 100 to 250
365
346
334
326
322
318
314
306
293
-
Minimum 0.2 percent proof strength; delivery condition as given in Table 3.
Source: EN 10028-2:2017, Table 4
Heat treatment guidelineguideline temperatures
Normalizing temperature
890 to 950 deg C
Quenching temperature
-
Tempering temperature
650 to 730 deg C
Informative guideline (Annex A).
Source: EN 10028-2:2017, Table A.1
Stress relieving guidance (Pcrit)Pcrit and holding time
Pcrit value
18.7
Stress relieving temperature for 1 h holding
660 deg C
Stress relieving temperature for 2 h holding
650 deg C
Selected pairs of stress relieving temperature and holding time for guidance (Annex B).
Source: EN 10028-2:2017, Table B.1
Active EN 10028-2:2017 13CrMoSi5-5 Listings on M-EX (For Sale)