Shanghai Katalor Enterprises Co., Ltd
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Grade D Shipbuilding Steel

Grade D Shipbuilding Steel

Yield point for all ordinary-strength Grade D shipbuilding steels is specified as 34,000 psi (235 MPa), Ultimate tensile strength of Grade D shipbuilding steel is 58,000 - 71,000 psi (400-490 MPa).
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Grade D shipbuilding steel Description

Grade D shipbuilding steel is a kind of hot rolled general tensile strength steel. It comes 4 grades in ordinary-strength steel Grade A, Grade B, Grade D, and Grade E for shipbuilding and Grade A is the lowest one of them. Yield point for all ordinary-strength shipbuilding steels is specified as 34,000 psi (235 MPa), Ultimate tensile strength of ordinary strength alloys is 58,000 - 71,000 psi (400-490 MPa). On certified steels, the plates are marked with the Grade Dnd a preceding Classification Society Mark like"AB/", AB/B; CCS, CCS B; RINA, RINA A etc.
Grade D shipbuilding steel products are fabricated by Katalor Industry in form of plates, coils, sheets, bars, profiles, bulb flats, and angle steel.
Grade D Shipbuilding Steel Plates Specification:
Thickness: 3-150mm
Width: 1220-4200mm
Length: 5000-17000mm
Notes: coil thickness ≤ 25mm
Grade D Shipbuilding Steel Chemical Composition (%, by weight)
Grade % max
C Si Mn P S
GR. A 0.21 0.50 2.5×C 0.035 0.035
GR. B 0.21 0.35 0.60 0.035 0.035
GR. C 0.21 0.10~0.35 0.60 0.035 0.035
GR. D 0.18 0.10~0.35 0.70 0.035 0.035
Grade D Shipbuilding Steel Mechanical Properties:
Grades Yield strength
MPa
Tensile strength
MPa
Elongation
Min,%
200mm 50mm
Grade A,B,C,D 400~520 235min 21 24
Grade D Shipbuilding Steel Application
Grade D shipbuilding steel plates are almost exclusively used in the Shipbuilding Industry for the construction of structural parts of ships, barges and marine equipment. Grade D shipbuilding steel also can be used for ship repairing, the offshore oil drilling platform, the platform pipe joints and other components.
Grade D Shipbuilding Steel Heat Analysis
Grade D shipbuilding steel plates in all thicknesses shall be normalized or thermo-mechanical control processed while shapes and bars in all thicknesses shall be heat treated and rolled. Heat analysis of ordinary strength structural steel shall be used to determine the required chemical composition for carbon, manganese, phosphorus, sulfur, nickel, chromium, molybdenum, silicon, and copper.

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Tel: 0086-18317160019
E-Mail: [email protected]
Skype: shanghai.katalor
Address: Address:Unit 6,lane 2500,xiupu Road,Kangqiao Industrial Area,Pudong New District,Shanghai