Technical conditions for plates of P355NL1

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Posted On

4-Dec-13

Product Details

nalysis)
C Si Mn P S
Max 0.18 Max 0.50 1.10- 1.70 Max 0.025 Max 0.015

3.2 Carbon equivalent (CEq)
Carbon equivalent shall be not more than 0.45 for plates of P355NL1.
Carbon equivalent shall be calculated as follows:
CEq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 (%)
3.3 Mechanical properties
The mechanical properties of P355NL1 shall meet the requirement as table 2.
Table 2 Tensile properties
Thickness mm Yield strength MPa Tensile strength MPa -20C Akv (J) Elongation %
150-250 Min 295 450-590 Min 34J Min 21

3.4 Surface quality
The surface quality of plates shall be accordance with EN10163-2.
3.5 Ultrasonic inspection
Plates shall be ultrasonic inspected per EN10160-1999 S2E2.
3.6 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) EN10028-3 EN10028-3
2 Tensile test 1 (Rolled pc) EN10028-1 EN10028-1
3 Impact test at -20C 1 (Rolled pc) EN10028-1 EN10028-1
4 Thickness tension 3 (Rolled pc) EN10164 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 P355NL1 shall be witnessed by surveyor of GL.

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