EN10305-2 / DIN2393 |
Precision cold drawn seamless steel tube |
Application: | For the manufacturing of the boiler, economizer, reheater, and steam pipe. |
Size(mm): | O.D.:16-219mm ; W.T.:1-21mm; L:max 14000 |
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Grade and Chemical Composition(%): |
Brand | Chemical Composition(%) | C max | Si max | Mn | P max | S max | St 35 | 0.17 | 0.35 | ≥0.40 | 0.025 | 0.025 | St 45 | 0.21 | 0.35 | ≥0.40 | 0.025 | 0.025 | St 52 | 0.22 | 0.55 | ≤1.60 | 0.025 | 0.025 |
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Steel grade | Chemical Composition(%) | Steel name | Steel number | C max | Si max | Mn | P max | S max | Al min | E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 | E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - | E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
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Mechanical Properties(Mpa): |
Steel grade | BKW | BKW | BKS | GBK | NBK |
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Tensile Strength ReH N/mm min | Elongation% min | Tensile Strength ReH N/mm min | Elongation% min | Tensile Strength ReH N/mm min | Yield strength Rm N/mm min | Elongation % mi | Tensile Strength ReH N/mm min | Elongation % min | Tensile Strength ReH N/mm min | Yield strength Rm N/mm min | Elongation % min |
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St35 | 480 | 6 | 420 | 10 | 420 | 315 | 14 | 315 | 25 | 340-470 | 235 | 25 | St45 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 255 | 21 | St52 | 640 | 4 | 580 | 7 | 580 | 420 | 10 | 490 | 22 | 490-630 | 355 | 22 |
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Steel grade | Minimum values for the delivery condition |
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Steel name | Steel number | + C | + LC | + SR | + A | + N |
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Rm Mpa | A% | Rm Mpa | A% | Rm Mpa | ReH Mpa | A% | ReH Mpa | A% | Rm Mpa | ReH Mpa | A% |
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E215 | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290-430 | 215 | 30 | E235 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 | E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490-630 | 355 | 22 |
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