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AH 36 – DH 36 – EH 36 / 40

Overview

These grades used primarily in shipbuilding / repair and other marine applications. The high strength characteristics service the structural requirements of ships, barges, and other types of marine equipment. The EH 40 is utilized for applications which require added strength. ABS certification is normally provided.

Chemical Requirements

*Elements represented in percentage

Element Chemical CompositionA (heat analysis), % max unless otherwise specified
Grades AH/DH/EH32, AH/DH/EH36 and AH/DH/EH40
Deoxidation
Killed, Fine Grain PracticeB
C 0.18
Mn 0.90-1.60C
Si 0.10-0.50D
P 0.035
S 0.035
Al (acid soluble), minE,F 0.015
CbF 0.02-0.05
VF 0.05-0.10
Ti 0.02
Cu 0.35
Cr 0.20
Ni 0.40
Mo 0.08
N

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
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