ASTM A131 Grade EH36

TAGS: ASTM A131 | Grade EH36 | Shipbuilding Steel Plate | Shipbuilding | Shipbuilding Steel |

ASTM A131 Grade EH36

ASTM A131 is a specification that covers structural steel plates, shapes, and bars used in shipbuilding. It is widely recognized and accepted in the industry as a standard for materials used in marine construction.

The ASTM A131 specification includes several different grades, each offering unique properties suitable for specific applications in shipbuilding. These grades are categorized based on their minimum yield strength:

Grade A: This grade has a minimum yield strength of 34,000 psi (235 MPa) and is used for general strength applications in shipbuilding.

Grade B: With a minimum yield strength of 46,000 psi (315 MPa), Grade B is commonly used in the construction of hull structures.

Grade D: This grade offers a higher strength of 58,000-71,000 psi (400-490 MPa) and good toughness. It is often used for welded structures subjected to heavy loads.

Grade E: Grade E provides high strength and impact resistance. It has a minimum yield strength of 71,000 psi (490 MPa) and is suitable for applications requiring good weldability.

ASTM A131 provides guidelines for the selection and use of structural steel in shipbuilding applications, ensuring the materials meet the necessary strength, toughness, and weldability requirements. It is widely utilized in the shipbuilding industry to ensure the safe and reliable construction of marine vessels.

ASTM A131 Grade EH36 is a high-strength, low-alloy structural steel plate specifically designed for shipbuilding and offshore platforms. Here are the details regarding its chemical composition, physical properties, and typical applications:

Chemical composition (percentage by weight):

Carbon (C): ≤0.18%

Manganese (Mn): 0.90-1.60%

Phosphorus (P): ≤0.035%

Sulfur (S): ≤0.035%

Silicon (Si): 0.10-0.50%

Nickel (Ni): ≤0.40%

Chromium (Cr): ≤0.20%

Copper (Cu): ≤0.35%

Molybdenum (Mo): ≤0.08%

Vanadium (V): ≤0.02%

Nitrogen (N): ≤0.010%

Aluminum (Al): ≥0.015%

Physical properties:

Density: 7.85 g/cm³ (0.2836 lb/in³)

Melting point: 1420-1460°C (2588-2660°F)

Mechanical properties (minimum values at ambient temperature):

Yield strength (Ry): ≥355 MPa (51,400 psi)

Tensile strength (RT): 490-620 MPa (71,100-89,900 psi)

Elongation (A): ≥21%

Charpy impact energy (average): ≥34 J (25 ft·lbf) at -40°C (-40°F)

Typical applications:

ASTM A131 Grade EH36 is primarily used in the construction of ships and offshore structures where high strength, excellent weldability, and good toughness are required. It is commonly employed in the fabrication of hulls, decks, bulkheads, and structural components of various maritime vessels, including tankers, bulk carriers, and offshore drilling platforms.

Property	Temperature	Value	Comment
Density	23.0 °C	7.8 - 7.9 g/cm³ Show Material materials with Density of 7.8 - 7.9 g/cm³	Typical for Low Carbon Steel

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	200 - 215 GPa Show Material materials with Elastic modulus of 200 - 215 GPa	Typical for Low Carbon Steel
Elongation A200	23.0 °C	13 - 21 % Show Material materials with Elongation A200 of 13 - 21 %
Elongation A50	23.0 °C	20 % Show Material materials with Elongation A50 of 20 %
Poisson's ratio	23.0 °C	0.29 [-] Show Material materials with Poisson's ratio of 0.29 [-]	Typical for Low Carbon Steel
Shear modulus	23.0 °C	82 GPa Show Material materials with Shear modulus of 82 GPa	Typical for Low Carbon Steel
Tensile strength	23.0 °C	490 - 620 MPa Show Material materials with Tensile strength of 490 - 620 MPa
Yield strength	23.0 °C	355 MPa Show Material materials with Yield strength of 355 MPa

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.32E-5 - 1.38E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.32E-5 - 1.38E-5 1/K	Typical for Low Carbon Steel
Max service temperature		500 °C Show Material materials with Max service temperature of 500 °C	Typical for Carbon Steel
Melting point		1480 - 1526 °C Show Material materials with Melting point of 1480 - 1526 °C	Typical for Low Carbon Steel
Specific heat capacity	23.0 °C	465 J/(kg·K) Show Material materials with Specific heat capacity of 465 J/(kg·K)	Typical for Low Carbon Steel
Thermal conductivity	23.0 °C	25 - 93 W/(m·K) Show Material materials with Thermal conductivity of 25 - 93 W/(m·K)	Typical for Low Carbon Steel

Property	Temperature	Value	Comment
Electrical resistivity	23.0 °C	1.43E-7 - 1.74E-7 Ω·m Show Material materials with Electrical resistivity of 1.43E-7 - 1.74E-7 Ω·m	Typical for Carbon Steel

Property	Value	Comment
Curie temperature	770 °C Show Material materials with Curie temperature of 770 °C	Typical for Low Carbon Steel

Property	Value
Aluminium	0.015 % Show Material materials with Aluminium of 0.015 %
Calcium	5E-3 % Show Material materials with Calcium of 5E-3 %
Carbon	0.18 % Show Material materials with Carbon of 0.18 %
Chromium	0.2 % Show Material materials with Chromium of 0.2 %
Copper	0.35 % Show Material materials with Copper of 0.35 %
Manganese	0.9 - 1.6 % Show Material materials with Manganese of 0.9 - 1.6 %
Molybdenum	0.08 % Show Material materials with Molybdenum of 0.08 %
Nickel	0.4 % Show Material materials with Nickel of 0.4 %
Niobium	0.02 - 0.05 % Show Material materials with Niobium of 0.02 - 0.05 %
Phosphorus	0.04 % Show Material materials with Phosphorus of 0.04 %
Silicon	0.1 - 0.5 % Show Material materials with Silicon of 0.1 - 0.5 %
Sulfur	0.035 % Show Material materials with Sulfur of 0.035 %
Titanium	0.02 % Show Material materials with Titanium of 0.02 %
Vanadium	0.05 - 0.1 % Show Material materials with Vanadium of 0.05 - 0.1 %