Shipbuilding Steels

Our hot rolled shipbuilding steel is produced in accordance with the relevant Classification Society, examples of which include Lloyds Register and Det Norske Veritas.

Our steel products include steel shipbuilding plate, fabricated steel sections and floor plate for decking. We can also supply bulb flats for plate stiffening, structural steel angles and inverted angles.

Our plates are supplied under the ASTM/ASME specification (ASTM A131 / ASME SA 131) which is the standard specification for Structural Steel for Ships.

We offer higher strength shipbuilding steels as standard .High strength steels offer significant cost advantages by reducing the weight of the structure in comparison to the steel used. The plates are suitable for use in the construction of container ships and large cargo freighters as well as commercial shipping lines such as luxury cruise ships and ferries.

Supply options include heavy plates, surface treated plates and pre-fabricated sections. In most cases, the steel can also be supplied as hot rolled coils or cut into lengths (sheets).

These high yield materials are commonly used in the construction of hulls and superstructures for large shipping vessels. The grades are exclusively for shipbuilding use as set out in the standard.

AH36

We supply grade AH36 high strength structural shipbuilding steel to the ASTM A131: Part 4 specification.

Masteel UK Limited supplies Grade AH36 to the world’s master shipbuilders in accordance with the classification society of your choice. The material can be supplied as heavy plates, surface treated plates and fabricated sections.

The steel is used in the construction of container ships, bulk carriers and commercial ships such as liners and ferries.

Mechanical Properties of AH36

Grade Re Rm Elongation
A50mm A200mm
MPa MPa % %
AH36 355 490/620 22 19

Chemical Composition of AH36

%
C 0.18
Si 0.10/0.50
Mn 0.90/1.60
P 0.035
S 0.035
Cr 0.20
Mo 0.08
Ni 0.40
Cu 0.35
Cb 0.02/0.05
V 0.05/0.10

DH36

Masteel UK Limited supplies Grade DH36 to shipbuilders worldwide in accordance with the classification society of your choice and in accordance with ASTM A131:Part 4.

The material is available in heavy plates, surface treated plates and fabricated sections. The shipbuilding structural steel is used for the main structural build including the hull and superstructure. DH36 is suitable for new builds or refits and can be found in large bulk carriers, container ships and passenger liners.

Mechanical Properties of DH36

Grade Re Rm Elongation
A50mm A200mm
MPa MPa % %
DH36 355 490/620 22 19

Chemical Composition of DH36

%
C 0.18
Si 0.10/0.50
Mn 0.90/1.60
P 0.035
S 0.035
Cr 0.20
Mo 0.08
Ni 0.40
Cu 0.35
Cb 0.02/0.05
V 0.05/0.10

EH36

Grade EH36 – Masteel are suppliers of high quality EH36 structural steel plate to the shipbuilding industry to specification ASTM A131: Part 4. We able to also offer compliance with classification society standards such as ones set by Lloyds Register.

The material is available as heavy plates or sheets and pre-fabricated steel sections. The steel can also be pre-treated. EH36 is widely used in the shipbuilding industry both in hull construction and in the superstructure itself.

Mechanical Properties of EH36

Grade Re Rm Elongation
A50mm A200mm
MPa MPa % %
EH36 355 490/620 22 19

Chemical Composition of EH36

%
C 0.18
Si 0.10/0.50
Mn 0.90/1.60
P 0.035
S 0.035
Cr 0.20
Mo 0.08
Ni 0.40
Cu 0.35
Cb 0.02/0.05
V 0.05/0.10