STRUCTURAL AND CORROSION RESISTANT STEELS
Applications
I. Cold rolled sheets made of low carbon non-alloyed structural steel are used for the production of flat or cold-formed structural elements. Their application is determined by the minimum value of the yield point, or by the tensile strength.
II. Cold rolled sheets made of fine-grained, atmospheric corrosion
resistant structural steel are mostly used in the building industry and for various constructions. Improved resistance is due to the surface layer of oxides of alloying elements.
U. S. Steel Košice has implemented and maintains a quality control
system in accordance with the standard EN ISO 9001,as well as in
accordance with IATF 16949 for the automotive industry, issued by TÜV SÜD. A part of production is certified in accordance with the European Parliament Regulation 97/23/EC, AD2000W1 and by the Ü mark for steels used in German civil engineering.
Grades
Cold rolled products are classified into quality grades according to their chemical composition and mechanic properties.
TECHNICAL SPECIFICATION
I. STRUCTURAL GRADES - BRAND CORRESPONDENCE
| Germany DIN 1623/09 |
USA | U. S. Steel Košice | |
|---|---|---|---|
| ASTM A 611/97 | SAE | ||
| - | Gr. A, B | - | KOSIL 200 S |
| S215G | Gr. C type 1,2 | 1015 | KOSIL 215 S |
| S245G | Gr. D type 1,2 | - | |
| S325G | - | - | |
II. ATMOSPHERIC CORROSION RESISTANT GRADES - BRAND CORRESPONDENCE
| Japan JIS G 3125/87 | U. S. Steel Košice |
|---|---|
| SPA-C | KONOX 315 S 1) |
1) minimum amount to be ordered - 2 000 t
CHEMICAL COMPOSITION structural grades
| Grades according to DIN 1623/09 U. S. Steel Košice |
Heat analysis in % | |||||
|---|---|---|---|---|---|---|
| CMAX | MnMAX | SiMAX | PMAX | SMAX | NMAX | |
| KOSIL 200 S | 0,16 | 0,60 | 0,030 | 0,025 | 0,020 | - |
| S215G | 0,18 | 1,50 | - | 0,030 | 0,025 | 0,0105 |
| KOSIL 215 S | 0,16 | 0,80 | 0,030 | 0,025 | 0,020 | - |
| S245G | 0,20 | 1,60 | - | 0,030 | 0,025 | - |
| S325G | 0,20 | 1,60 | 0,55 | 0,030 | 0,025 | - |
CHEMICAL COMPOSITION atmospheric corrosion resistant steels
| Quality according to U. S. Steel Košice |
Heat analysis in % | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| CMAX | P | SMAX | AlMAX | Mn | Si | Cr | NiMAX | Cu | |
| KONOX 315 S | 0,12 | 0,07 - 0,15 | 0,015 | 0,02 | 0,20 - 0,55 | 0,25 - 0,55 | 0,50 - 1,20 | 0,65 | 0,25 - 0,60 |
MECHANICAL PROPERTIES structural grades
| Grades according to DIN 1623/86 T2 U. S. Steel Košice |
Rp0,2 MIN [MPa] |
Rm [MPa] |
AMIN (%) Lo = 80 mm |
Angle of bend 180° 1) |
|---|---|---|---|---|
| KOSIL 200 S | 200 | 310 - 430 | 22 | 0,5.a |
| S215G | 215 | 360 - 510 | 20 | - |
| KOSIL 215 S | 215 | 360 - 470 | 20 | 0,5.a |
| S245G | 245 | 430 - 580 | 18 | - |
| S325G | 325 | 510 - 680 | 16 | - |
MECHANICAL PROPERTIES atmospheric corrosion resistant steels
| Grades according to DIN 1623/86 T2 U. S. Steel Košice |
Rp0,2 [MPa] |
Rm [MPa] |
AMIN (%) Lo = 80 mm |
Angle of bend 180° 1) |
|---|---|---|---|---|
| KONOX 315 | min. 315 | min. 450 | 23 | 0,5.a |
DIMENSIONS OF SHEETS AND COILS [ mm ] for KOSIL 200 S, KOSIL 215 S and corresponding grades
| Nominal thickness | Width | |||||
|---|---|---|---|---|---|---|
| 750 | 1105 | 1265 | 1425 | 1500 | ||
| 0,400 - 0,449 | ||||||
| 0,450 - 0,749 | ||||||
| 0,750 - 1,149 | ||||||
| 1,150 - 2,000 | ||||||
DIMENSIONS OF COILS AND SLIT COILS [mm] for S245 G, S325 G, KONOX 315 S and corresponding grades
| Nominal thickness | Width | ||||||
|---|---|---|---|---|---|---|---|
| 750 | 1015 | 1085 | 1200 | 1275 | 1325 | ||
| 0,550 - 0,649 | |||||||
| 0,650 - 0,949 | |||||||
| 0,950 - 1,249 | |||||||
| 1,250 - 1,749 | |||||||
| 1,750 - 2,000 | |||||||
The width of 700 - 749 mm at the thickness of 0,80 - 2,00 mm is the subject to prior agreement
DIMENSIONS OF SHEETS [mm]
| Thickness | Length |
|---|---|
| 0,40 - 1,00 | 1 000 - 3 100 |
| 1,01 - 2,00 | 1 000 - 4 000 |
DIMENSIONS OF COILS AND SLIT COILS [mm]
| Thickness | Inner diameter | Outer diameter | Coil | Slit coil | ||
|---|---|---|---|---|---|---|
| Width | Weight | Width | Weight | |||
| 0,40 - 1,30 | approx. 500 or 600 | max. 1 800 | 750 - 1 050 | 3 - 15 kg.mm-1 of width | 21 - 600 | max. 15 000 kg |
| 0,40 - 2,00 | approx. 600 | 750 - 1 500 | 2 - 17 kg.mm-1 of width | 21 - 600 | max. 15 000 kg | |
NOTE: thickness is graded by 0,01 mm.
THICKNESS TOLERANCES IN ACCORDANCE WITH EN 10131/06 [ mm ] Re < 260 MPa
| Nominal thickness | Normal tolerances at width | Reduced tolerances at width | ||
|---|---|---|---|---|
| ≤ 1 200 | > 1200 ≤ 1 500 | ≤ 1 200 | > 1200 ≤ 1 500 | |
| > 0,40 ≤ 0,60 | ± 0,03 | ± 0,04 | ± 0,025 | ± 0,030 |
| > 0,60 ≤ 0,80 | ± 0,04 | ± 0,05 | ± 0,030 | ± 0,035 |
| > 0.80 ≤ 1,00 | ± 0,05 | ± 0,06 | ± 0,035 | ± 0,040 |
| > 1,00 ≤ 1,20 | ± 0,06 | ± 0,07 | ± 0,040 | ± 0,050 |
| > 1,20 ≤ 1,60 | ± 0,08 | ± 0,09 | ± 0,050 | ± 0,060 |
| > 1,60 ≤ 2,00 | ± 0,10 | ± 0,11 | ± 0,060 | ± 0,070 |
NOTE: reduced tolerances are subject to prior agreement
THICKNESS TOLERANCES IN ACCORDANCE WITH EN 10131/06 [ mm ] 260 < Re < 340 MPa
| Nominal thickness | Normal tolerances at width | Reduced tolerances at width | ||
|---|---|---|---|---|
| ≤ 1 200 | > 1200 ≤ 1 500 | ≤ 1 200 | > 1200 ≤ 1 500 | |
| > 0,40 ≤ 0,60 | ± 0,04 | ± 0,05 | ± 0,030 | ± 0,035 |
| > 0,60 ≤ 0,80 | ± 0,05 | ± 0,06 | ± 0,035 | ± 0,040 |
| > 0.80 ≤ 1,00 | ± 0,06 | ± 0,07 | ± 0,040 | ± 0,050 |
| > 1,00 ≤ 1,20 | ± 0,07 | ± 0,08 | ± 0,050 | ± 0,060 |
| > 1,20 ≤ 1,60 | ± 0,09 | ± 0,11 | ± 0,060 | ± 0,070 |
| > 1,60 ≤ 2,00 | ± 0,12 | ± 0,13 | ± 0,070 | ± 0,080 |
NOTE: reduced tolerances are subject to prior agreement
SHEET FLATNESS TOLERANCES1) IN ACCORDANCE WITH EN 10131/06 [ mm ] Re < 260 MPa
| Nominal width | Normal tolerances at thickness | Reduced tolerances2) at thickness | ||||
|---|---|---|---|---|---|---|
| < 0,70 | ≥ 0,70 < 1,20 | ≥ 1,20 | < 0,70 | ≥ 0,70 < 1,20 | ≥ 1,20 | |
| > 600 < 1 200 | 10 | 8 | 7 | 5 | 4 | 3 |
| ≥ 1 200 < 1 500 | 12 | 10 | 8 | 6 | 5 | 4 |
| ≥ 1 500 | 17 | 15 | 13 | 8 | 7 | 6 |
1) coil flatness tolerances are subject to prior agreement
2) reduced tolerances are subject to prior agreement
SHEET FLATNESS TOLERANCES1) IN ACCORDANCE WITH EN 10131/06 [ mm ] 260 ≤ Re < 340 MPa
| Nominal width | Normal tolerances at thickness | Reduced tolerances2) at thickness | ||||
|---|---|---|---|---|---|---|
| < 0,70 | ≥ 0,70 < 1,20 | ≥ 1,20 | < 0,70 | ≥ 0,70 < 1,20 | ≥ 1,20 | |
| > 600 < 1 200 | 13 | 10 | 8 | 8 | 6 | 5 |
| ≥ 1 200 < 1 500 | 15 | 13 | 11 | 9 | 8 | 6 |
| ≥ 1 500 | 20 | 19 | 17 | 12 | 10 | 9 |
1) coil flatness tolerances are subject to prior agreement
2) reduced tolerances are subject to prior agreement
SURFACE FINISH AND ROUGHNESS VALUES
SURFACE TREATMENT
| Surface finish | Symbol | Roughness |
|---|---|---|
| Bright | b | Ra ≤ 0,9 μm |
| Matt | m | 0,6 μm < Ra ≤ 1,9 μm |
| Rough | r | Ra > 1,6 μm |
- non-oiled - without corrosion guarantee
- oiled - oil weight 0,5 - 2,5 g.m-2
( electrostatically applied oil layer)
WELDABILITY
- steels are suitable for welding with standard techniques
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U. S. Steel Košice, s.r.o.
Vstupný areál U. S. Steel
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Slovak Republic
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