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Steel for pressure vessels and welded part of boilers

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In category Hot rolled steel

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product forms

Coils

wide strips with a rolled width of 600 mm and more, supplied in coils

Strips

cut from wide strips, width less than 600 mm, supplied in coils

Sheets

sheets cut from wide strips supplied in sheets

KEY FEATURES

P235S, P265S, P275SL

Grades according to EN 10207

P235GH, P265GH, P295GH, P355GH

Grades according to EN 10028-2

P275NL1,  P355N, P355NL1

Grades according to EN 10028-3

TECHNICAL SPECIFICATION

CHEMICAL COMPOSITION 

Grades according to
EN 10207 		Heat analysis in %
C max. Mn Si max. P max. S max. Al min. N max.
P235S 0,16 0,40 - 1,20 0,35 0,025 0,025 0,020 0,010
P265S 0,20 0,50 - 1,50 0,40 0,025 0,025 0,020 0,010
P275SL 0,16 0,50 - 1,50 0,40 0,025 0,020 0,020 0,010
Grades according to
EN 10028-2 		Heat analysis in %
C Si max. Mn P max. S max. Al min. N max. Cr max. Cu max. Mo max. Nb max. Ni max. Ti max. V max. Cr+Cu+Mo+Ni max.
P235GH max. 0,16 0,35 0,60 - 1,20 0,025 0,010 0,020 0,012 0,30 0,30 0,08 0,30 0,30 0,03 0,02 0,70
P265GH max. 0,20 0,40 0,80 - 1,40 0,025 0,010 0,020 0,012 0,30 0,30 0,08 0,30 0,30 0,03 0,02 0,70
P295GH 0,08 - 0,20 0,40 0,90 - 1,50 0,025 0,010 0,020 0,012 0,30 0,30 0,08 0,30 0,30 0,03 0,02 0,70
P355GH 0,10 - 0,22 0,60 1,10 - 1,70 0,025 0,010 0,020 0,012 0,30 0,30 0,08 0,04 0,30 0,03 0,02 0,70
Grades according to
EN 10028-3 		Heat analysis in %
C max. Si max. Mn P max. S max. Al min. N max. Cr max. Cu max. Mo max. Nb max. Ni max. Ti max. V max. Nb+Ti+V max.
P275NL1 0,16 0,40 0,80 1) - 1,50 0,025 0,008 0,020 2) 3) 0,012 0,30 4) 0,30 4) 0,08 4) 0,05 0,50 0,03 0,05 0,05
P355N 0,18 0,50 1,10 - 1,70 0,025 0,010 0,020 2) 3) 0,012 0,30 4) 0,30 4) 0,08 4) 0,05 0,50 0,03 0,10 0,12
P355NL1 0,008

1) For product thickness < 6 mm, a minimum Mn content of 0.60 is permitted
2) Alt content may undercut this minimum if niobium, titanium or vanadium is used additionally for nitrogen fixation
3) If only aluminium is used for nitrogen fixation, an Al/N ratio ≥ 2 must be used
4) The sum of the weight percentages of the three elements chromium, copper and molybdenum shall not exceed 0,45 %

MECHANICAL PROPERTIES 

Grades according to
EN 10207 		ReH [MPa] min. Rm [MPa] A [%] min. KV [J] min.
L0 = 80 mm L0 = 5,65 √S0
2 < a ≤ 2,5 a > 2,5 < 3 a ≥ 3
P235S 235 360 - 480 20 21 26 -20 °C 28
P265S 265 410 - 530 17 18 22 -20 °C 28
P275SL 275 390 - 510 19 20 24 -50 °C 28
Grades according to
EN 10028-2 		ReH [MPa] min. Rm [MPa] A [%] min.  KV [J] min.
L0 = 5,65√S0
P235GH 235 360 - 480 24 -20 °C 27
P265GH 265 410 - 530 22 -20 °C 27
P295GH 295 460 - 580 21 -20 °C 27
P355GH 355 510 - 650 20 -20 °C 27
Grades according to
EN 10028-3 		ReH [MPa] min. Rm [MPa] A [%] min. KV [J] min.
L0 = 5,65√S0
P275NL1 275 390 - 510 24 -20 °C 35
P355N 355 490 - 630 22 -20 °C 30
P355NL1 -20 °C 35
Grades according to
EN 10028-2 		Minimum 0,2 % conventional yield strength Rp0,2 1)
MPa, at temperature in °C
  50 100 150 200 250 300 350 400
P235GH 227 214 198 182 167 153 142 133
P265GH 256 241 223 205 188 173 160 150
P295GH 285 268 249 228 209 192 178 167
P355GH 343 323 299 275 252 232 214 202

1) by agreement at the time of enquiry and ordering, the agreed testing temperature must be part of the agreement

DIMENSIONS OF SHEETS AND COILS, grades with nominal value Re ≤ 280 MPa

Thickness [mm] 1) Width  [mm] 1) (data in brackets represent the widths of the sheets with trimmed edges)
coils  780
sheets  (750) 		940
(910) 		1 040
(1 010) 		1 140
(1 110) 		1 290
(1 260) 		1 440
(1 410) 		1 547
(1 517)
2,00 - 2,19 2)      
2,20 - 2,49   2)    
2,50 - 2,99   2)  
3,00 - 3,49   2)
3,50 - 4,99 Length of sheets: 2 000 - 4 000 4) 3)
5,00 - 12,70 Length of sheets: 2 000 - 6 000 5) 3)

1) Basic thickness dimensions graded by 0,01 mm, width by 0,1 mm
2) Without guarantee of flatness
3) Width over 1 500 mm without guarantee of flatness
Other dimensions are subject to prior agreement

4) On agreement sheets are delivered up to length of 6 000 mm; lengths above 4 000 mm without flatness guarantee. Length is grated by 1 mm
5) On agreement sheets are delivered up to length of 12 100 mm; lengths above  6 000 mm without flatness guarantee. Length is grated by 1 mm

DIMENSIONS OF SHEETS AND COILS, grades with nominal value 280 MPa < Re ≤ 360 MPa

Thickness [mm] 1) Width [mm] 1) (data in brackets represent the widths of the sheets with trimmed edges)
coils  780
sheets  (750) 		940
(910) 		1 040
(1 010) 		1 140
(1 110) 		1 290
(1 260) 		1 440
(1 410) 		1 547
(1 517)
2,00 - 2,19          
2,20 - 2,49 2)      
2,50 - 2,99   2)    
3,00 - 3,49   2)  
3,50 - 3,99   2)
4,00 - 4,99 Length of sheets: 2 000 - 4 000 4) 3)
5,00 - 12,70 Length of sheets: 2 000 - 6 000 5) 3)

1) Basic thickness dimensions graded by 0,01 mm, width by 0,1 mm
2) Without guarantee of flatness
3) Width over 1 500 mm without guarantee of flatness
Other dimensions are subject to prior agreement

4) On agreement sheets are delivered up to length of 6 000 mm; lengths above 4 000 mm without flatness guarantee. Length is grated by 1 mm
5) On agreement sheets are delivered up to length of 12 100 mm; lengths above  6 000 mm without flatness guarantee. Length is grated by 1 mm

DIMENSION OF SLIT COILS, grades with nominal value Re ≤ 360 MPa

Thickness [mm] 1) Width [mm] 1)
110 - 510 511 - 550 551 - 580
2,00 2) - 2,49      
2,50 - 2,99    
3,00 - 6,00  
6,01 - 8,00      

1) Basic thickness dimensions graded by 0,01 mm, width by 0,10 mm
2) Subject to prior agreement
Other dimensions are subject to prior agreement

THICKNESS TOLERANCES IN ACCORDANCE WITH EN 10051 AND U. S. STEEL KOŠICE, S.R.O., GRADES P235S, P235GH
Nominal thickness
[mm] 		Thickness tolerances at nominal widths [mm]
≤ 1 200 > 1 200 ≤ 1 500 > 1 500 ≤ 1 800 1)
EN U. S. Steel Košice EN U. S. Steel Košice EN U. S. Steel Košice

≤ 2,00

± 0,17 ± 0,10 ± 0,19 ± 0,10 ± 0,21 ± 0,10
> 2,00 ≤ 2,50 ± 0,18 ± 0,09 ± 0,21 ± 0,10 ± 0,23 ± 0,10
> 2,50 ≤ 3,00 ± 0,20 ± 0,11 ± 0,22 ± 0,10 ± 0,24 ± 0,10
> 3,00 ≤ 4,00 ± 0,22 ± 0,12 ± 0,24 ± 0,10 ± 0,26 ± 0,10
> 4,00 ≤ 5,00 ± 0,24 ± 0,12 ± 0,26 ± 0,12 ± 0,28 ± 0,12
> 5,00 ≤ 6,00 ± 0,26 ± 0,12 ± 0,28 ± 0,12 ± 0,29 ± 0,12
> 6,00 ≤ 8,00 ± 0,29 ± 0,13 ± 0,30 ± 0,12 ± 0,31 ± 0,12
> 8,00 ≤ 10,00 ± 0,32 ± 0,13 ± 0,33 ± 0,14 ± 0,34 ± 0,14
> 10,00 ≤ 12,50 ± 0,35 ± 0,13 ± 0,36 ± 0,13 ± 0,37 ± 0,13
> 12,50 ≤ 12,70 ± 0,37 ± 0,14 2) ± 0,38 ± 0,14 ± 0,40 ± 0,14

1) Maximum width of U. S. Steel Košice´s hot rolled products is 1 540 mm.
2) Calculated by linear regression for shortage of rolled material - acceptance by trial delivery.

THICKNESS TOLERANCES IN ACCORDANCE WITH EN 10051 AND U. S. STEEL KOŠICE, S.R.O., GRADES P265S, P275SL, P265GH, P275NL1, P295GH
Nominal thickness
[mm] 		Thickness tolerances at nominal widths [mm]
≤ 1 200 > 1 200 ≤ 1 500 > 1 500 ≤ 1 800 1)
EN U. S. Steel Košice EN U. S. Steel Košice EN U. S. Steel Košice

≤ 2,00

± 0,17 ± 0,10 ± 0,19 ± 0,11 2) ± 0,21 ± 0,11 2)
> 2,00 ≤ 2,50 ± 0,18 ± 0,10 ± 0,21 ± 0,10 ± 0,23 ± 0,10
> 2,50 ≤ 3,00 ± 0,20 ± 0,11 ± 0,22 ± 0,11 ± 0,24 ± 0,11
> 3,00 ≤ 4,00 ± 0,22 ± 0,12 ± 0,24 ± 0,11 ± 0,26 ± 0,11
> 4,00 ≤ 5,00 ± 0,24 ± 0,12 ± 0,26 ± 0,11 ± 0,28 ± 0,11
> 5,00 ≤ 6,00 ± 0,26 ± 0,11 ± 0,28 ± 0,12 ± 0,29 ± 0,12
> 6,00 ≤ 8,00 ± 0,29 ± 0,13 ± 0,30 ± 0,14 ± 0,31 ± 0,14
> 8,00 ≤ 10,00 ± 0,32 ± 0,14 ± 0,33 ± 0,15 ± 0,34 ± 0,15
> 10,00 ≤ 12,50 ± 0,35 ± 0,15 ± 0,36 ± 0,15 ± 0,37 ± 0,15
> 12,50 ≤ 12,70 ± 0,37 ± 0,15 ± 0,38 ± 0,16 ± 0,40 ± 0,16

1) Maximum width of U. S. Steel Košice´s hot rolled products is 1 540 mm.
2) Calculated by linear regression for shortage of rolled material - acceptance by trial delivery. 

THICKNESS TOLERANCES IN ACCORDANCE WITH EN 10051 AND U. S. STEEL KOŠICE, S.R.O., GRADES P355GH, P355N, P355NL1
Nominal thickness
[mm] 		Thickness tolerances at nominal widths [mm]
≤ 1 200 > 1 200 ≤ 1 500 > 1 500 ≤ 1 800 1)
EN U. S. Steel Košice EN U. S. Steel Košice EN U. S. Steel Košice

≤ 2,00

± 0,20 ± 0,11 ± 0,22 ± 0,12 2) ± 0,24 ± 0,12 2)
> 2,00 ≤ 2,50 ± 0,21 ± 0,11 ± 0,24 ± 0,12 2) ± 0,26 ± 0,12 2)
> 2,50 ≤ 3,00 ± 0,23 ± 0,12 ± 0,25 ± 0,13 ± 0,28 ± 0,13
> 3,00 ≤ 4,00 ± 0,25 ± 0,12 ± 0,28 ± 0,13 ± 0,30 ± 0,13
> 4,00 ≤ 5,00 ± 0,28 ± 0,14 ± 0,30 ± 0,15 ± 0,32 ± 0,15
> 5,00 ≤ 6,00 ± 0,30 ± 0,14 ± 0,32 ± 0,15 ± 0,33 ± 0,15
> 6,00 ≤ 8,00 ± 0,33 ± 0,15 ± 0,35 ± 0,16 ± 0,36 ± 0,16
> 8,00 ≤ 10,00 ± 0,37 ± 0,17 ± 0,38 ± 0,18 ± 0,39 ± 0,18
> 10,00 ≤ 12,50 ± 0,40 ± 0,17 ± 0,41 ± 0,18 ± 0,43 ± 0,18
> 12,50 ≤ 12,70 ± 0,43 ± 0,17 2) ± 0,44 ± 0,18 2) ± 0,46 ± 0,18 2)

1) Maximum width of U. S. Steel Košice´s hot rolled products is 1 540 mm.
2) Calculated by linear regression for shortage of rolled material - acceptance by trial delivery.

SHEET FLATNESS TOLERANCES IN ACCORDANCE WITH EN 10051
Nominal width
w 		Nominal thickness
t

Category A
(Re ≤ 300 MPa)

Category B
300 MPa < Re ≤ 360 MPa

Measuring length 1 000 mm

w ≤ 1 200

t ≤ 2,00 18
2,00 < t ≤ 5,00 15

5,00 < t ≤ 12,70

13
1 200 < w ≤ 1 500 t ≤ 2,00 21
2,00 < t ≤ 5,00 18
5,00 < t ≤ 12,70 16
w > 1 500 t ≤ 2,00 26
2,00 < t ≤ 5,00 22
5,00 < t ≤ 12,70 19

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Transport & Storage recommendations

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