Chemical composition of EN 10305-4 E235 Precision Seamless Cold Drawn Tubes
| Steel grade | % by mass | ||||||
| Steel name | Steel number | C max. |
Si max. |
Mn max. |
P max. |
S a max. |
Al total b 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 | 0,015 |
| E355 | 1.0580 | 0,22 | 0,55 | 1,60 | 0,025 | 0,025 | 0,020 |
| Elements not quoted in this table (but see footnote b ) shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for the purposes of deoxidation and/or nitrogen binding. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process. | |||||||
| a This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements, such as Ti, Nb or V. If added, the content of these elements shall be reported in the inspection document.When using titanium, the manufacturer shall verify that (Al + Ti/2) ≥ 0,020. | |||||||
Table 2 - Permissible deviations of the product analysis from the specified limits on the cast analysis given in Table 1
| Element | Specified limit of the cast Analysis , % by mass |
Permissible deviation of the product analysis, % by mass |
| C | ≤ 0,22 | + 0,02 |
| Si | ≤ 0,55 | + 0,05 |
| Mn | ≤ 1,60 | + 0,10 |
| P | ≤ 0,025 | + 0,005 |
| S | ≤ 0,015 | + 0,003 |
| Al | ≥ 0,015 | – 0,005 |
Mechanical properties of EN 10305-4 E235 Precision Seamless Cold Drawn Tubes
| Steel grade | Yield strength a R eH min.MPa |
Tensile strength R m MPa |
Elongation after Fracture A min.% |
|
| Steel name | Steel number | |||
| E215 | 1.0212 | 215 | 290 to 430 | 30 |
| E235 | 1.0308 | 235 | 340 to 480 | 25 |
| E355 | 1.0580 | 355 | 490 to 630 | 22 |
| The steel grades defined in this document have an intrinsic minimum transverse impact energy of 27 J at 0 °C. | ||||
| a For tubes with outside diameter D ≤ 30 mm and wall thickness T ≤ 3 mm, the R eH minimum values are 10 MPa lower than the values given in this table. | ||||
