Accreditation Administration System:
With the lowest temperature impacting test at minus 60℃, FH classes contain LR grade FH36,
LR Grade FH40 and LR Grade FH32 shipbuilding steel.Generally for these higher steel grades,
steel mills would suggest customers accepting do Z test for strength the property of plates.
Other relative steel grades are LR Grade A,LR Grade B,LR Grade D,LR Grade E,LR Grade AH36,
LR Grade AH40,LR Grade DH36,LR Grade DH40,LR Grade EH36,LR Grade EH40 and so on.
YUSHENG IRON AND STEEL list the difference among these three grades in the below table,
please check it.
Property Data:
|
Grade |
|
LR Grade FH32 |
LR Grade FH36 |
LR Grade FH40 |
|
Chemical Composition % ≤ |
C |
0.16 |
0.16 |
0.16 |
|
Mn |
0.90-1.60 |
0.90-1.60 |
0.90-1.60 | |
|
Si |
0.10-0.50 |
0.10-0.50 |
0.10-0.50 | |
|
P |
0.025 |
0.025 |
0.025 | |
|
S |
0.025 |
0.025 |
0.025 | |
|
Al (acid)≥ |
0.015 |
0.015 |
0.015 | |
|
Nb |
0.02-0.05 |
0.02-0.05 |
0.02-0.05 | |
|
V |
0.05-0.10 |
0.05-0.10 |
0.05-0.10 | |
|
Ti |
0.02 |
0.02 |
0.02 | |
|
Cu |
0.35 |
0.35 |
0.35 | |
|
Cr |
0.20 |
0.20 |
0.20 | |
|
Ni |
0.80 |
0.80 |
0.80 | |
|
Mo |
0.08 |
0.08 |
0.08 | |
|
N |
0.009 |
0.009 |
0.009 | |
|
Tensile Strength (Mpa) ≥ |
440-590 |
490-620 |
510-650 | |
|
Yield Strength (Mpa) ≥ |
315 |
355 |
390 | |
|
Mark on steel plate |
LR/FH32 |
LR/FH36 |
LR/FH40 | |
