In LR classification society, ordinary strength structural marine steel grades contain LR Grade A,LR Grade B,LR Grade D and LR Grade E steel. High strength structural shipbuilding steel grades are LR Grade AH32, Grade AH36, GRADE AH40, Grade DH36,Grade DH40,GRADE FH32, LR GRADE FH36 and Grade FH40. Now we analysis the ordinary strength marine steelgrades propertiesas belows:
LR Grade A, Grade B, Grade D, Grade E Ordinary Strength Marine Steel
Grade |
LR Grade A | LR Grade B | LR Grade D | LR Grade E | |
| Yield Strength(Mpa) | 235 |
235 |
235 |
235 |
|
| Tensile Strength(Mpa) | 400-520 |
400-520 |
400-520 |
400-520 |
|
| Impacting Test temperature (℃) | 20 |
0 |
-20 |
-40 |
|
| Chemical Composition % ≤ |
C |
0.21 |
0.21 |
0.21 |
0.18 |
Mn(≥) |
2.5*C |
0.80 |
0.60 |
0.70 |
|
P |
0.035 |
0.035 |
0.035 |
0.035 |
|
S |
0.035 |
0.035 |
0.035 |
0.035 |
|
Si |
0.50 |
0.35 |
0.10- 0.35 |
0.10- 0.35 |
|
Al (acid) |
0.035 |
0.035 |
0.035 |
0.035 |
|
| H:Heat Analysis. P:Product Analysis | LRA |
LRB |
LRD |
LRE |
|
We can supply ordinary strength marine steel grade LR Grade A,LR Grade B, LR Grade D and LR Grade E steel plates with LR certification(Lloyd’s Register of Shipping). Find more details of shipbuilding steel from Katalor Industry for now.
