ASTM A131 AH36 steel plate, AH36 steel is a kind of steel for shipbuilding and platform. Shipbuilding steel plate AH36 is the high tensile strength steel. As a professional AH36 shipbuilding steel plate exporter, Arrow Pipes & Plates Industries can supply steel plate AH36. ASTM A 131 AH36 shipbuilding steel plates can be used in the manufacture of the ship’s hull structure whose weight is below 10000 tons.

AH36 shipbuilding steel plate specification:
Thickness: 4mm to 260mm,
Width: 1200mm to 4000mm
Length: 3000mm to 18000mm.

AH36 steel Chemical Composition %:

Grade

C %

Si %

Mn %

P %

S %

V %

AL %

Cr %

Grade AH36

0.180

0.1-0.5

0.90-1.6

0.035

0.035

0.05-0.10

0.015

0.200

Cu %

Mo %

Nb %

Ni %

Ti %

0.350

0.080

0.02-0.05

0.400

0.020

AThe contents of any other element intentionally added is to be determined and reported.
BThe steel is to contain at least one of the grain refining elements in sufficient amount to meet the fine grain practice requirement.
CGrade AH 0.5 in. [12.5 mm] and under in thickness may have a minimum manganese content of 0.70%.
DIf the content of soluble aluminum is not less than 0.015%, the minimum required silicon content does not apply.
EThe total aluminum content may be used instead of acid soluble content, in accordance with 7.1.
FThe indicated amount of aluminum, columbium, and vanadium applies if any such element is used singly. If used in combination, the minimum content in 7.2.2 and 7.2.3, as appropriate, will apply.
G0.012 if aluminum is present.

DNV AH36 Grade Ship Steel Mechanical Properties:

Grade

Thickness(mm)

MinYield(Mpa)

Tensile(Mpa)

Elongation (%)

Min Impact Energy

DNV Grade AH36

8mm-50mm

Min 355Mpa

490-620Mpa

21%

-0

34J

51mm-70mm

Min 355Mpa

490-620Mpa

21%

-0

41J

71mm-100mm

Min 355Mpa

490-620Mpa

21%

-0

50J

The min impact energy is longitudinal energy

Tensile Requirements

Grade Tensile Strength,
ksi [MPa]
Yeild Point, min
ksi [MPa]
Elongation in 8 in. [200 mm]A,B, min % Elongation in 2 in. [50 mm]B,C, min %
AH32, DH32, EH32, FH32 64 to 85 [440 to 590] 46 [315] 19 22
AH36, DH36, EH36, FH36 71 to 90 [490 to 620] 51[365] 19 22
AH40, DH40, EH40, FH40 74 to 94 [510 to 650] 57[390] 19 22

AFor nominal thickness or diameter under 5/16 in. [8 mm], a deduction from the specified percentage of elongation in 8 in. [200 mm] shall be made. See elongation requirement adjustments under the Tension Test section of Specifications A6/A6M for deduction values.
BElongation is not required for floor plate.
CFor nominal thickness or diameter over 3.5 in. [90 mm], a deduction from the specified percentage of elongation in 2 in. [50 mm] shall be made. See elongation requirement adjustments under the Tension Test section of Specification A6/A6M for deduction values.
DFor Grade A shapes and bars, the upper limit of tensile strength may be 80 ksi [550 MPa].