EN 10028-3:2017 P420NH Steel: Specifications & Listings
EN 10028-3:2017 P420NH: P420NH: weldable fine grain normalized steel flat product for pressure purposes, elevated temperature quality (steel number 1.8932). 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
<=0.20
<=0.60
1.10-1.70
<=0.025
<=0.010
>=0.020
<=0.020
<=0.30
<=0.30
<=0.10
<=0.05
<=0.80
<=0.03
<=0.20
Mechanical Properties
Tensile Strength
540-690 MPa
Yield Strength
>=420 MPa
Elongation
>=19%
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
420
540 to 690
over 16 to 40
405
540 to 690
over 40 to 60
395
540 to 690
over 60 to 100
370
515 to 665
over 100 to 150
350
500 to 650
over 150 to 250
340
490 to 640
Normalized condition.
Source: EN 10028-3:2017, Table 4
Elongation by thickness6 thickness ranges
Thickness (mm)
Elongation A, min (%)
up to 16
19
over 16 to 40
19
over 40 to 60
19
over 60 to 100
19
over 100 to 150
19
over 150 to 250
19
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
406
382
354
325
298
274
254
238
over 16 to 40
392
369
341
314
287
264
245
230
over 40 to 60
382
359
333
306
280
258
239
224
over 60 to 100
358
337
312
287
263
241
224
210
over 100 to 150
339
319
295
271
248
228
212
199
over 150 to 250
329
309
286
263
241
222
206
193
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
0.48
over 60 to 100
0.48
over 100 to 250
0.52
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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