Application
Sheets with surface patterns (tear sheets and checker sheets) are mostly used as floor covering in industrial buildings, ships etc. The steels are weldable. Steels are not to be formed or bent. Test of bendability is executed on samples without patterns.
Tear sheets – a framework of oval projections covers one side of a sheet surface; axis of the projections and rolling direction contains angle of 45°. Each projection is orthogonal to the adjacent ones.
Checker sheets – the patterns form diamonds with longer diagonal parallel with sheet rolling direction. Per diamond shape holds a/b > 2
Comparison of standards for patterned sheet production
| Germany | USA | Russia | Czech Rep., Slovakia |
|---|---|---|---|
| DIN 59 220/83 | ASTM A 786/93 | GOST 8568/77 | ČSN, STN 42 5390/89 ČSN, STN 42 5392/89 |
Shape of patterns in these standards is not identical. Most of producers consider it informative; customers must be informed about this fact.
Comparison of grades according to recognized standards
| European standards | Germany DIN 17 100/80 |
Japan | USA | Russia GOST 380/88 |
Czech Rep., Slovakia ČSN, STN |
U.S. Steel Košice, s.r.o. |
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|---|---|---|---|---|---|---|---|---|---|
EN 10025/90 +A1/93 |
EN 10025/90 |
JIS G 3101/91 |
JIS G 3106/91 |
ASTM | SAE | ||||
| S185 | Fe 310 - 0 | St 33 | SS 330 | St 1 sp | 10 004, 11 343 | ||||
| S235JR | Fe 360 B | St 37-2 | VSt 2 sp | 11 375 | KOSIL 240 KOSIL 235 D1) KOSIL 235 CD1) |
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| S235JRG2 | Fe 360 BFN | RSt 37-2 | A 570 -Gr 30, 33, 36 A 569 A 283 Gr, C, D |
1009 1010 |
VSt 3 sp | ||||
| S235JO | Fe 360 C |
St 37-3U | 11 378 | ||||||
| S235J2G3 | Fe 360 D1 | St 37-3N | |||||||
| S235J2G4 | Fe 360 D2 | ||||||||
| S275JR | Fe 430 B |
St 44-2 | SS 400 | SM 400 A SM 400 B SM 400 C |
A 570 Gr.40, 45 A 36 |
1012 1015 a 1022 |
VSt 4 sp | 11 425 11 428 |
KOSIL 260 KOSIL 275 D1) KOSIL 275 CD1) |
| S275JO | Fe 430 B |
St 44-3U | A 529 | ||||||
| S275J2G3 | Fe 430 D1 | St 44-3N | |||||||
| S275J2G4 | Fe 430 D2 | ||||||||
Suitable for dip galvanizing (D). Symbols S - steel for constructions, number 235, 275, 355 - min. Re in MPa JR - +20 °C; KV - 27 J JO - 0 °C; KV - 27 J G2 - non-annealed (within U.S.Steel Košice, s.r.o. G3), G3 - normalizing rolled, G4 - according to producer's preference(within U.S.Steel Košice, s.r.o. G3), C - for U.S.Steel Košice, s.r.o. grades special cold formality. |
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Chemical properties
Quality according to EN 10025/90+A1/93 U.S.Steel |
Heat analysis in % | ||||||
|---|---|---|---|---|---|---|---|
| CMAX | MnMAX | PMAX | SMAX | SiMAX | AlMIN | NMAX | |
| S185 | |||||||
| S235JR | 0.17d | 1.40 | 0.045 | 0.045 | 0.009 | ||
| S235JRG2 | |||||||
| S235JO | 0.040 | 0.040 | |||||
| S235J2G3 | 0.035 | 0.035 | |||||
| S235J2G4 | |||||||
| KOSIL 240 | 0.17 | 0.030 | 0.025 | 0.020 | |||
| KOSIL 235 D | 1.40 | 0.030 | 0.012 | ||||
| KOSIL 235 CD | 0.025 | 0.010 | |||||
| S275JR | 0.21 | 1.50 | 0.045 | 0.045 | 0.009 | ||
| S275JO | 0.18 | 0.040 | 0.040 | ||||
| S275J2G3 | 0.035 | 0.035 | |||||
| S275J2G4 | |||||||
| KOSIL 260 | 0.18 | 0.030 | 0.025 | 0.020 | |||
| KOSIL 275 D | 1.50 | 0.030 | 0.012 | ||||
| KOSIL 275 CD | 0.025 | 0.010 | |||||
Mechanical properties
Quality according to EN 10025/90 +A1/93, U.S.Steel Košice, s.r.o. |
Mechanical properties 1) | |||||||
|---|---|---|---|---|---|---|---|---|
| ReH MIN
(MPa) |
Rm
(MPa) |
AMIN (%) | KV MIN2) (J) a > 10 | |||||
| l0 = 80 mm | L0 = 5.65 √s04) | |||||||
| a < 3 | a ≥ 3 | a ≤ 2 | a > 2 ≤ 2.5 | a >2.5 < 3 | a ≥ 3 | |||
| S185 | 185 | 310 - 540 | 290 - 510 | l 12 t 10 |
l 13 t 11 |
l 14 t 12 |
l 18 t 16 |
|
| S235JR | 235 | 360 - 510 | 340 - 470 | l 19 t 17 |
l 20 t 18 |
l 21 t 19 |
l 26 t 24 |
+20 ° C 27 |
| S235JRG2 | ||||||||
| S275JO | 0 ° C 27 | |||||||
| S235J2G3 | -20 ° C 27 | |||||||
| S235J2G4 | ||||||||
| KOSIL 240 | 235 | 360 - 510 | 340 - 470 | t 24 | t 26 | -20 ° C 553) | ||
| KOSIL 235 D | -20 ° C 273) | |||||||
| KOSIL 235 CD | -20 ° C 403) | |||||||
| S275JR | 275 | 430 - 580 | 410 - 560 | l 16 t 14 |
l 17 t 15 |
l 18 t 16 |
l 22 t 20 |
+20 ° C 27 |
| S275JO | 0 ° C 27 | |||||||
| S275J2G3 | -20 ° C 27 | |||||||
| S275J2G4 | ||||||||
| KOSIL 260 | 275 | 430 - 530 | 410 - 520 | t 22 | t 24 | -20 ° C 553) | ||
| KOSIL 275 D | 430 - 580 | 410 - 560 | -20 ° C 273) | |||||
| KOSIL 275 CD | -20 ° C 403) | |||||||
| 1) ≤ 600 mm - mechanical tests are performed in longitudinal direction "l", > 600 mm - mechanical tests are performed in transverse direction "t". 2) Sampling in longitudinal direction 3) Tests executed up to sheet thickness 5.0 mm. 4) S0 guaranteed without patterns. |
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Technical delivery regulations, dimensions, metallurgical certificate
| STANDARDS | Germany DIN 59 220/83 |
USA ASTM A 786/93 |
Russia GOST 8568/77 |
Czech Rep. Slovakia CSN, STN 42 5390/89 CSN, STN 42 5392/89 |
|
|---|---|---|---|---|---|
Technical delivery regulations |
sheets coils |
DIN 59 220/83 | ASTM A 786/93 | GOST 8568/77 | CSN, STN 42 5390/89 CSN, STN 42 5392/89 |
| Dimensions | sheets coils |
DIN 59 220/83 | DIN 59 220/83 | DIN 59 220/83 | DIN 59 220/83 |
| Metallurgical certificate | EN 10204/91+A1/95 | EN 10204/91+A1/95 1) | |||
| 1) and according to relevant technical delivery regulations. | |||||
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