DIN17155 HI Steel plate for Boiler Pressure Vessel
HI steel plate, DIN17155 HI steel plates is a kind of material for boiler and pressure vessel steel. HI steel plates is characterised by a minimum yield strength of 170-230MPa and by good weldability,so HI steel is mainly used to for manufacturing boilers, pressure vessels and pipes transporting hot liquids.the following are DIN17155 HI steel plate's Chemical composition and mechanical properties
| Grades | C max | Si max | Mn. max | P max | S max | N max | AL min | Cr max | Cu max | Mo max | Ni max | Nb max | Ti max | V max |
| HI | 0.16 | 0.35 | 0.60-1.20 | 0.025 | 0.015 | 0.012 | 0.02 | 0.3 | 0.03 | 0.08 | 0.3 | 0.02 | 0.03 | 0.02 |
HI steel Mechanical properties
| Gade | Thickness (mm) | Yield Strength MPa(min) | Tensile Strength MPa | Elongation % (min) | Impact Energy (KV J) (min) | ||
| -20℃ | 0℃ | 20℃ | |||||
| HI | ≤ 16 | 235 | 360 to 480 | 24 | 27 | 34 | 40 |
| 16＜t ≤40 | 225 | 360 to 480 | 24 | 27 | 34 | 40 | |
| 40＜t ≤60 | 215 | 360 to 480 | 24 | 27 | 34 | 40 | |
| 6＜t ≤100 | 200 | 360 to 480 | 24 | 27 | 34 | 40 | |
| 100＜t ≤150 | 185 | 350 to 480 | 24 | 27 | 34 | 40 | |
| 150＜t ≤250 | 170 | 350 to 480 | 24 | 27 | 34 | 40 | |
we are HI steel suppliers ,also can supply HII steel plate, if you need our products ,please contact us.
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