EN 10028-2:2017 16Mo3 Steel: Specifications & Listings
EN 10028-2:2017 16Mo3: 16Mo3: molybdenum 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
0.12-0.20
<=0.35
0.40-0.90
<=0.025
<=0.010
<=0.012
<=0.30
<=0.30
0.25-0.35
<=0.30
Mechanical Properties
Tensile Strength
440-590 MPa
Yield Strength
>=275 MPa
Elongation
>=22%
Condition
Usual delivery condition normalized (+N), nominal thickness up to 16 mm; transverse direction, Yield Strength is ReH, Elongation is A
More data from EN 10028-2:2017
From the standard
Mechanical properties by thickness6 thickness ranges
Delivery condition
Thickness t (mm)
Yield strength ReH, min (MPa)
Tensile strength Rm (MPa)
Elongation A, min (%)
+N
up to 16
275
440 to 590
22
+N
over 16 to 40
270
440 to 590
22
+N
over 40 to 60
260
440 to 590
22
+N
over 60 to 100
240
430 to 580
22
+N
over 100 to 150
220
420 to 570
22
+N
over 150 to 250
210
410 to 570
22
Transverse direction; usual delivery condition as stated per row.
Source: EN 10028-2:2017, Table 3
Impact energy KV2 (Charpy V-notch)1 row
Condition or thickness
KV2 min at -20 deg C (J)
KV2 min at 0 deg C (J)
KV2 min at +20 deg C (J)
all thicknesses
-
-
31
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 temperature6 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)
up to 16
273
264
250
233
213
194
175
159
147
141
over 16 to 40
268
259
245
228
209
190
172
156
145
139
over 40 to 60
258
250
236
220
202
183
165
150
139
134
over 60 to 100
238
230
218
203
186
169
153
139
129
123
over 100 to 150
218
211
200
186
171
155
140
127
118
113
over 150 to 250
208
202
191
178
163
148
134
121
113
108
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
590 to 650 may be necessary in certain cases deg C
Informative guideline (Annex A).
Source: EN 10028-2:2017, Table A.1
Stress relieving guidance (Pcrit)Pcrit and holding time
Pcrit value
17.5
Stress relieving temperature for 1 h holding
600 deg C
Stress relieving temperature for 2 h holding
590 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 16Mo3 Listings on M-EX (For Sale)