NK GRA Shipbuilding Steel

It is the most critical requirement that NK GRA shipbuilding steel have good toughness. In addition, NK GRA steel also has high strength, good corrosion resistance, weld ability, processing properties and surface quality.

NK GradeA Shipbuilding Steel Chemical Requirements (%)

Grade	C max	Si max	Mn min	P max	S max	C+Mn/6
NK A	0.21	0.50	2.5xC	0.035	0.035	0.40

NK Grade A Shipbuilding Steel Tensile Requirements

Grade	Yield Strength (Mpa)	Tensile Strength (MPa)	Elongation in 8 in. [200mm] (%)	Elongation in 2 in. [50mm] (%)	Test Temperature(°C)
NK A	235	400-520	21	24	20

Different specifications of Shipbuilding Steel

The structural strength of the hull structural steel is divided according to its minimum yield point: general strength structural steel and high strength structural steel. The general strength structural steel of China Classification Society standard is divided into four quality grades: A, B, D, and E; the high-strength structural steel of China Classification Society standard is three strength grades and four quality grades:

AH32	AH36	AH40
DH32	DH36	DH40
EH32	EH36	EH40
FH32	FH36	FH40

NK GRA Steel Precautions

The delivery of the steel mill must be delivered according to the requirements of the contract according to the requirements of the contract and provide the original quality certificate. The certificate has the following contents:
(1) Specification requirements;
(2) Quality record number and certification number;
(3) Furnace batch number, technical grade;
(4) Chemical composition and mechanical properties;
(5) The certificate of approval of the classification society and the signature of the surveyor.

Shanghai Katalor Enterprises is one of the largest steel supplier in Shanghai, China. Shanghai Katalor Enterprises also have a high quality logistics team who make sure the fast delivery time and shipment. Anyway, if you want to find NK GRA Shipbuilding Steel plate/sheet/angle bar/bulb flat bar/ L section steel bar supplier, manufacturer and exporter, please contact us, we will give you the best service!