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Description
Chemical Composition and Mechanical Properties of ASTM A131 Grade AH32
ASTM A131 Grade AH32 is a high-strength structural steel with the following properties:
| Property | Value |
|---|---|
| Yield Strength (min) | 315 MPa (46 ksi) |
| Tensile Strength | 440-590 MPa (64-85 ksi) |
| Elongation (min) | 22% in 2″, 19% in 8″ |
The chemical composition includes a maximum carbon content of 0.18% and a maximum CEV of 0.36%.
Applications of ASTM A131 Grade AH32 in Shipbuilding and Offshore Structures
AH32 steel is widely used in:
- Ship hull structures
- Deck plating
- Bulkheads
- Mobile offshore drilling units
- Marine equipment and components
Its high strength and good impact toughness make it ideal for these applications.
Manufacturing Process and Available Forms of AH32 Steel
AH32 steel is typically manufactured as plate steel. Available dimensions include:
- Thickness: 0.251″ – 1.50″ (6.38 – 38.1 mm)
- Width: 72″ – 120″ (1800 – 3050 mm)
- Length: 240″ – 1020″ (6100 – 25910 mm)
Comparison of AH32 with Other ASTM A131 Grades
| Grade | Yield Strength (min) | Impact Test Temperature |
|---|---|---|
| AH32 | 315 MPa | 32°F (0°C) |
| DH32 | 315 MPa | -4°F (-20°C) |
| EH32 | 315 MPa | -40°F (-40°C) |
AH32 offers a balance of strength and toughness suitable for most shipbuilding applications.
Quality Standards and Testing for ASTM A131 Grade AH32
AH32 undergoes rigorous testing, including:
- Tensile strength testing
- Chemical composition analysis
- Charpy V-notch impact testing (23 ft-lbs @ 32°F)
- Ultrasonic testing for internal defects
At HL Steel Company, we ensure that all our ASTM A131 Grade AH32 steel meets or exceeds these quality standards, providing our customers with reliable and high-performance products for their shipbuilding and offshore structural needs.
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