DH32 steel is low temperature hull structural steel,as it’s temperature can reach to 20.
Hull structure steel is divided into general strength and high strength steel. General strength steel quality is divided into A, B, C, and D four grades, while high strength steel is divided into two levels and three quality grades:AH32、DH32、EH32、AH36、DH36、EH36
Main Classification Society Certification: CCS,ABS,GL,BV,DNV,KDK,LR
DH32 shipbuilding steel plate chemical composition %
| Grade | C max | Si max | Mn | P max | S max | Als min | Ti max | Cu max | Cr max | Ni max | Mo max |
| DH32 | 0.18 | 0.50 | 0.90-1.60 | 0.035 | 0.035 | 0.015 | 0.02 | 0.35 | 0.20 | 0.40 | 0.08 |
Note: Generally speaking CE will be ≤ 0.40%. If the delivery condition is TMPC, the CE will be : ≤ 0.36% (thickness ≤ 50mm),≤0.38%( when the thickness >50-100). Ceq% =(C+Mn)/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
DH32 shipbuilding steel plate mechanicaL properties:
| Grade | Rm (MPa) |
Re(MPa) min | A% min | Akv/J min | ||||||
| DH32 | 440-570 | 315 | 22 | E.T °C | Thickness (mm) | |||||
| -20 | ≤ 50 | >50-70 | >70-100 | |||||||
| L | C | L | C | L | C | |||||
| 31 | 22 | 38 | 26 | 46 | 31 | |||||
Note: In the list , Rm: .tensile strength,Re: Yield strength,A%: elongation, E.T: experimental temperature,L: lengthways, C: crosswise.
With the development of shipbuilding industry in China, Chinese shipbuilding materials have been used in domestic and foreign markets. Every year, we Katalor Enterprises exports shipbuilding materials about 5000 - 10600 tons to Asian, Middle East, European, South America and North Africa.
