ASTM A131 Grade AH36 Shipbuilding Steel Plate Chemical Composition and Mechanical Property
|
Grade |
C % |
Si % |
Mn % |
P % |
S % |
Al(acid soluble),min% |
Cb |
V |
Ti |
Cu |
Cr |
Ni |
Mo |
|
ASTM A131 AH36 |
0.18 |
0.10-0.50 |
0.90-1.60 |
0.035 |
0.035 |
0.015 |
0.02-0.05 |
0.05-0.10 |
0.02 |
0.35 |
0.20 |
0.40 |
0.08 |
|
Grade |
Yield Strength (Mpa) |
Tensile Strength |
Elongation in8 in.[200mm] |
Elongation in8 in.[200mm] |
Impact Energy |
Test Temperature(°C) |
|
ASTM A131 AH36 |
≥355 |
490-620 |
≥19 |
≥22 |
34 |
0 |
|
Equivalent steel grade of A131 AH36 |
|||||||
|
DNV |
GL |
LR |
BV |
CCS |
NK |
KR |
RINA |
|
NV A36 |
GL-A36 |
LR/AH36 |
BV/AH36 |
CCS/A36 |
K A36 |
R A36 |
RI/A36 |
ASTM A131 Grade AH36 Shipbuilding Plate Application
ASTM A131 Grade AH36 Shipbuilding steel plate is mainly used to Shipbuilding Project and Ocean Offshore Structural Project.
ASTM A131 Grade AH36 Marine Steel Plates Other Name
ASTM A131 Grade AH36 Shipbuilding steel plate, ASTM A131 Grade AH36 Ship steel plate, ASTM A131 Grade AH36 Marine steel plate, ASTM A131 Grade AH36 steel plate .
Additional Condition
UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.
What is the ASTM equivalent of AH36 Marine Steel Plates?
ASTM AH36 is under ASTM A131/A131M standard, ASTM AH36 refers to AH36 shipbuilding steel. Usually the end user has class certification requirement for ASTM AH36 shipbuilding steel. Such as ABS, LR, BV, GL DNV, RINA, NK and so on. Sometimes, ASTM AH36 shipbuilding steel is also short to A36 shipbuilding steel.
Q345B, A572 Gr.50, S355JR, ST52-3 VS ASTM A131 AH36 ship plate
- ASTM A131 AH36 steel and so called ASTM A131 AH36 steel equivalent chemical composition:
| Grade | Chemical composition % | |||||||||||||
| C (t≤16mm) | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | N | Mo | Other | |
| Q345B | 0.20 max | 0.50 max | 1.70 max | 0.035 max | 0.035 max | 0.07 max | 0.15 max | 0.20 max | 0.30 max | 0.50 max | 0.30 max | 0.012 max | 0.1 max | - |
| A572 Gr.50 | 0.23 max | 0.40 max | 1.35 max | 0.04 max | 0.05 max | 0.005-0.05 | - | - | - | - | - | - | - | - |
| - | 0.01-0.15 | - | - | - | - | - | - | - | ||||||
| 0.005-0.05 | 0.01-0.15 | - | - | - | - | - | - | Nb+V 0.02-0.15 | ||||||
| - | 0.06 max | 0.006-0.04 | - | - | - | 0.003-0.015 | - | - | ||||||
| S355JR | 0.27 max | 0.6 | 1.70 max | 0.045 max | 0.045 max | - | - | - | - | - | 0.60 max | 0.014 max | - | - |
| ST52-3 | 0.22 max | 0.50 max | 0.50 max | - | - | - | - | - | - | - | - | - | ||
| A131 AH36 | ≤0.18 | ≤0.50 | 0.90-1.60 | ≤0.030 | ≤0.030 | 0.02-0.05 | 0.05-0.10 | ≤0.02 | ≤0.20 | ≤0.40 | ≤0.30 | ≤0.08 | Als ≥0.015 | |
- ASTM A131 AH36 steel and so called ASTM A131 AH36 ship plate equivalent mechanical property:
| Grade | Yield strength ReH/(N/mm2) (t≤16mm) min | Tensile strength Rm/(N/mm2) (3mm≤t≤16mm) | Elongation A/%(3mm≤t≤40mm) min | Charpy V test | |
| Temperature/℃ | Impact energy (Longitudinal)/J min | ||||
| Q345B | 345 | 470-630 | 20 | 20 | 34 |
| A572 Gr.50 | 345 | 450 | 18 | - | - |
| S355JR | 355 | 470-630 | 22 | 20 | 27 |
| ST52-3 | 355 | 490-630 | 22 | 0 | 27 |
| A131 AH36 | ≥355 | 490-620 | ≥21 | 0 | 34 |
From the comparion, we find that though ASTM A131 AH36 steel and so called ASTM A131 AH36 steel equivalent materials have much in common. But they are not totally the same. Some even have different impact test requirements. As we know the ASTM A131 AH36 steel is shipbuilding steel, the ship needs to understand waves and corrossion of sea water. It is not safe to use the so called ASTM A131 AH36 steel equivalent to build ships. They can only be used in some not so important parts on the ships.
difference between A36 and AH36 Shipbuilding Steel Plate
ASTM AH36 is under ASTM A131/A131M standard, ASTM AH36 refers to AH36 shipbuilding steel. Usually the end user has class certification requirement for ASTM AH36 shipbuilding steel. Such as ABS, LR, BV, GL DNV, RINA, NK and so on.
Sometimes, ASTM AH36 shipbuilding steel is also short to A36 shipbuilding steel. In this condition, ASTM AH36 steel and A36 steel is totally the same.
However, at most times, ASTM A36 steel means another steel type, it is A36 mild steel. A36 mild steel is for general construction, seldom used for ship building. A36 mild steel strength is lower than ASTM AH36 shipbuilding steel strength.
- ASTM AH36 VS A36 mild steel in chemical composition:
| Grade | C | Mn | P | S | Si | Al | Cb | V | Ti | Cu | Cr | Ni | Mo |
| A36 mild steel | ≦0.18 | 0.70-1.60 | ≦0.035 | ≦0.035 | 0.10-0.50 | ||||||||
| ASTM AH36 shipbuilding steel | 0.12-0.20 | 0.30-0.70 | ≦0.045 | ≦0.045 | ≦0.30 | ≧0.015 | 0.02-0.05 | 0.05-0.10 | ≦0.02 | ≦0.35 | ≦0.20 | ≦0.40 | ≦0.08 |
- ASTM AH36 VS A36 mild steel in mechanical properties:
| Grade | Yield strength | Tensile strength | Extension |
| MPA | MPA | % | |
| A36 mild steel | ≧250 | 400~550 | ≧20 |
| ASTM AH36 shipbuilding steel plate | ≧355 | 490~620 | ≧22 |
From above tables about ASTM AH36 VS A36 mild steel in chemical composition and mechanical properties, we can easily understand that A36 mild steel is totally different from ASTM AH36 shipbuilding steel.
If you want to learn about or purchase other ship plates from GNEE, you can send an email to info@gneesteels.com. We will be very happy to serve you.
Related steel grades
|
ASTM A131 Shipbuilding Steel Plate Grade Supplier |
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|
Ordinary strength |
ASTM A131 Grade A |
ASTM A131 Grade B |
ASTM A131 Grade D |
ASTM A131 Grade E |
|
low - temperature toughness |
ASTM A131 Grade AH32 |
ASTM A131 Grade AH36 |
ASTM A131 Grade AH40 |
/ |
|
Medium - low temperature toughness |
ASTM A131 Grade DH32 |
ASTM A131 Grade DH36 |
ASTM A131 Grade DH40 |
/ |
|
Better low - temperature toughness |
ASTM A131 Grade EH32 |
ASTM A131 Grade EH36 |
ASTM A131 Grade EH40 |
/ |
|
Ultra - low temperature toughness |
ASTM A131 Grade FH32 |
ASTM A131 Grade FH36 |
ASTM A131 Grade FH40 |
/ |
