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 |