Shipbuilding use ASTM A131 grade B hull steel covers structural steel plates, shapes and bars for use in ship construction. A131 grade B hull steel plate is ordinary strength shipbuilding steel with a specified minimum yield point of 34 ksi [235 Mpa]. As one of the leading shipbuilding steel suppliers in the world, our certified A131 grade B hull steel plate can reach 3mm thickness limit. ASTM A131 grade B hull steel plate is supplied with EN 10204 3.2 Mill Test Certificate (MTC) certified by ABS, LR, BV, DNV GL, RINA, NK, CCS, KR, RMRS or any other classification societies as the end user’s requirements.
Shipbuilding use ASTM A131 grade B hull steel plate chemical composition:
(heat analysis, % max unless otherwise specified)
Notes: The contents of nickel, chromium, molybdenum, and copper are to be determined and reported. When the amount does not exceed 0.02 %, these elements may be reported as≤0.02 % .
Shipbuilding use ASTM A131 grade B hull steel plate mechanical property:
||Charpy V Impact Test
|ASTM A131 grade B
A131 grade B hull steel equivalent grades:
Charpy V-notch test shall be made on shipbuilding use ASTM A131 grade B hull steel plate over 1 in. [25mm] in thickness. A131 grade B hull steel plate is widely used for building decks of ships, vessels and boats, as well as other normal repairing works in shipyards.