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Comparasion of Grade A131 AH36 steel plate and A131 DH36 steel plate
Source:Steel Industry   Date:2021/04/06

 

A131 AH36 steel plate and A131 Grade DH36 steel plate both are high strength low temperature impacting shipbuilding steel materials in specification ASTM A131/A131M.Thermal Mechanical Control Processing (TMCP) heat treatment shall be done for A131 AH36 steel plate and A131 DH36 steel plate.Of course,Noramlized heat treatment can be choosed by shipyard customers.A131 Grade AH36 steel plate do Charp-V notch impacting test at low temperature 0 Degree Centigrade,but A131 Grade DH36 have to do this impacting test at -20 Deg.C.


Our stock shipbuilding steel plates including common structural grades A,B,D,E and high strength grades AH36,AH40,DH36,DH40,EH36,EH40,FH32,FH36,FH40,also extra higher grades AQ47,EQ47,EQ56,EQ63,AQ70,DQ70,EQ70,A420,E420,E460,A690,D690,E690 with ABS,LR,BV,DNV-GL,CCS,KR,NK classification societies approval.


Chemical composition and Mechanical property for ASTM A131 AH36 and A131 DH36 steel plate:

 

Chemical composition: Heat Analysis  Max%

Material

C

Si

Mn

P

S

Al min.

Nb

V

Ti

Cu

Cr

Ni

ASTM A131 AH36

0.18

0.1-0.5

0.9-1.6

0.035

0.035

0.015

0.02-0.05

0.05-0.1

0.02

0.35

0.2

0.4

ASTM A131 DH36

0.18

0.1-0.5

0.9-1.6

0.035

0.035

0.015

0.02-0.05

0.05-0.1

0.02

0.35

0.2

0.4

Mechanical Properties:

Yield strength

Tensile strength

Mpa  Min.

Mpa

ASTM A131

AH36

355

490-620

ASTM A131

DH36

355

490-620