Technical conditions for plates of S275J0
1. Scope
The technical conditions apply to plates of S275J0 with thickness not more than 150mm. (8mm-150mm)
2. Dimension, Shape, Weight and Permissible Deviation
The dimension, shape, weight and permissible deviation shall meet the requirements of EN10029 class B.
3. Technical conditions
3.1 Chemical composition (Ladle analysis)
The chemical composition of plates shall be accordance with the following table 1.
Table 1 Chemical composition (Ladle analysis)
C | Si | Mn | P | S | Cu | N |
Max 0.18 | - | Max 1.50 | Max 0.03 | Max 0.03 | Max 0.55 | Max 0.012 |
3.2 Steel making process: EAF+LF/VD
3.3 Carbon equivalent (CEq)
Carbon equivalent shall be not more than 0.42 for plates of S275J0.
Carbon equivalent shall be calculated as follows:
CEq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 (%)
3.4 Mechanical properties
The mechanical properties of S275J0 shall meet the requirement as table 2.
Table 2 Tensile properties
Thickness mm | Yield strength MPa | Tensile strength MPa | 0C Akv (J) | Elongation % |
6-16 | Min 275 | 410-560 | Min 27J | Min 21 |
17-40 | Min 265 | |||
41-63 | Min 255 | Min 20 | ||
64-80 | Min 245 | Min 19 | ||
81-100 | Min 235 | |||
101-150 | Min 225 | 400-540 | Min 19 |
3.5 Surface quality
The surface quality of plates shall be accordance with EN10025-2-2004
3.6 Ultrasonic inspection
Plates shall be ultrasonic inspected per EN10160-1999 S2E2.
3.7 Direction of Thickness
Through thickness tension testing shall be done according to EN10164 (%Re ≥ 25)
3.8 Test method and inspection rules
Test items, sampling quantity, sampling method and test method shall conform to table 4.
Table 4 Test items for plates
No. | Test item | Quantity, Piece | Sampling method | Test method |
1 | Chemical composition (Ladle analysis) | 1 (per batch furnace number) | EN10028-1 | EN10028-1 |
2 | Tensile test | 1 (Rolled pc) | EN10028-1 | EN10028-1 |
3 | Impact test at 0C | 1 (Rolled pc) | EN10028-1 | EN10045-1 |
4 | Thickness tension | 3 (Rolled pc) | EN10028-1 | EN10164 |
4. Package, marking and certificate
Package, marking and certificate shall conform to EN10028-1.
5. The third party inspection
The chemical composition, tensile test and Charpy -V impact test for plates of S275J0 shall be witnessed by surveyor of client.
6. Delivery conditions
The delivery conditions for plates of S275J0 shall be Normalized.
