EN 10028-3:2017 P275NH Steel: Specifications & Listings
EN 10028-3:2017 P275NH: P275NH: weldable fine grain normalized steel flat product for pressure purposes, elevated temperature quality (steel number 1.0487). Specified in EN 10028-3:2017.
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
Al
N
Cr
Cu
Mo
Nb
Ni
Ti
V
<=0.16
<=0.40
0.80-1.50
<=0.025
<=0.010
>=0.020
<=0.012
<=0.30
<=0.30
<=0.08
<=0.05
<=0.50
<=0.03
<=0.05
Mechanical Properties
Tensile Strength
390-510 MPa
Yield Strength
>=275 MPa
Elongation
>=24%
Condition
Normalized, nominal thickness up to 16 mm
More data from EN 10028-3:2017
From the standard
Yield and tensile strength by thickness6 thickness ranges
Thickness (mm)
Yield strength ReH, min (MPa)
Tensile strength Rm (MPa)
up to 16
275
390 to 510
over 16 to 40
265
390 to 510
over 40 to 60
255
390 to 510
over 60 to 100
235
370 to 490
over 100 to 150
225
360 to 480
over 150 to 250
215
350 to 470
Normalized condition.
Source: EN 10028-3:2017, Table 4
Elongation by thickness6 thickness ranges
Thickness (mm)
Elongation A, min (%)
up to 16
24
over 16 to 40
24
over 40 to 60
24
over 60 to 100
23
over 100 to 150
23
over 150 to 250
23
Source: EN 10028-3:2017, Table 4
Proof strength Rp0.2 at elevated temperatureRp0.2 min in MPa, 6 thickness ranges
Thickness (mm)
50 deg C
100 deg C
150 deg C
200 deg C
250 deg C
300 deg C
350 deg C
400 deg C
up to 16
266
250
232
213
195
179
166
156
over 16 to 40
256
241
223
205
188
173
160
150
over 40 to 60
247
232
215
197
181
166
154
145
over 60 to 100
227
214
198
182
167
153
142
133
over 100 to 150
218
205
190
174
160
147
136
128
over 150 to 250
208
196
181
167
153
140
130
122
Minimum Rp0.2 in MPa for furnace normalized test pieces. If agreed at enquiry, these values may also apply to the NL1 and NL2 grades of the same strength.
Source: EN 10028-3:2017, Table 5
Minimum impact energy KV2KV2 min in J, thickness up to 250 mm
Direction
-50 deg C
-40 deg C
-20 deg C
0 deg C
+20 deg C
Transverse
-
-
30 (a)
40
50
Longitudinal
-
-
45
65
75
Footnote a: a minimum value of 40 J may be agreed at the time of enquiry and order.
Source: EN 10028-3:2017, Table 6
Maximum carbon equivalent value (CEV)3 thickness ranges
Thickness t (mm)
CEV, max
up to 60
0.40
over 60 to 100
0.40
over 100 to 250
0.42
Applies only if agreed at the time of enquiry and order. CEV = C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15.
Source: EN 10028-3:2017, Table 3
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