BS 1501 161 Gr. 400 ,164 Gr. 400 ,224 Gr. 400 steel is a weldable pressure vessel and boiler steel grade used by the world's industrial fabricators.
BS 1501 161 Gr. 400 ,164 Gr. 400 ,224 Gr. 400 steel is ideally suited for elevated temperature service, is commonly found in the oil & gas, petrochemical and chemical industry. This European standard grade steel has replaced the BS1501 and DIN17155 specification.
Chemical analysis -% by mass* (max)
Grade | C. % | Mn.% | S. | N | Cu | Nb | Ti. | Si. | P. | AL | Cr. | Mo. | Ni | Vi |
161 Gr. 400 / 164 Gr. 400 / 224 Gr. 400 | 0.20 | 0.80-1.40 | 0.015 | 0.012 | 0.30 | 0.020 | 0.03 | 0.40 | 0.025 | 0.020 | 0.30 | 0.08 | 0.30 | 0.02 |
Mechanical properties
Grade | Type | Thickness mm | Yield strength Mpa(min) | Tensile Strength MPa | Elongation % (min) | Impact Energy (KVJ) (min) | ||
-20° | 0° | +20 | ||||||
161 Gr. 400 / 164 Gr. 400 / 224 Gr. 400 | Normalized | ≤16 16>to≤40 40>to≤60 60>to≤100 100>to≤150 150>to≤250 | 265 | 410-530 | 22 | 27 | 34 | 40 |
255 | 410-530 | 22 | 27 | 34 | 40 | |||
245 | 410-530 | 22 | 27 | 34 | 40 | |||
215 | 410-530 | 22 | 27 | 34 | 40 | |||
200 | 400-530 | 22 | 27 | 34 | 40 | |||
185 | 390-530 | 22 | 27 | 34 | 40 |
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