API 2Y Offshore and marine structural steel plate
API 2Y offshore and marine structural steel plate is a high-strength material designed for shipbuilding and marine applications. We provide certified industrial supply.
1. High Strength and Corrosion Resistance
2. Strict Compliance with API Standards
3. Optimized for Fabrication and Weldability
API 2Y Offshore and marine structural steel description
API 2Y steel plates are high-strength, low-alloy materials designed for offshore and marine structures, offering superior toughness and corrosion resistance in harsh environments. As a leading China-based manufacturer and bulk exporter, we supply API 2Y Grade 50/60 plates with excellent weldability and fatigue resistance, ideal for shipbuilding, offshore platforms, and subsea applications.
Our plates are available in thicknesses ranging from 10mm to 50mm, fully compliant with API 2Y standards, ensuring reliability for fabricators, shipyards, and marine engineering projects. Suitable for high-stress structural components, our steel delivers consistent performance in extreme conditions.
For API 2Y steel plate supply or large-volume procurement, contact our factory today for competitive pricing and global delivery.
API 2Y Chemical Composition/Tensile Requirements
| API 2Y Chemical Composition (wt%) | |||
| Element | 2Y40 | 2Y50 | 2Y60 |
| C (max) | 0.18 | 0.2 | 0.2 |
| Mn (max) | 1.6 | 1.6 | 1.6 |
| P (max) | 0.025 | 0.025 | 0.025 |
| S (max) | 0.025 | 0.025 | 0.025 |
| Si (max) | 0.5 | 0.5 | 0.5 |
| Cu (min) | 0.2 | 0.2 | 0.2 |
| Ni (min) | – | – | 0.4 |
| Cr (min) | – | – | 0.15 |
| Mo (min) | – | – | 0.1 |
| V (min) | – | – | 0.05 |
| API 2Y Mechanical Properties | |||
| Property | 2Y40 | 2Y50 | 2Y60 |
| Yield Strength (min, MPa) | 275 | 345 | 415 |
| Tensile Strength (MPa) | 415-585 | 485-620 | 520-690 |
| Elongation (min, %) | 20 | 20 | 18 |
| Charpy Impact (min, J) | 27 at-20°C | 27 at-20°C | 27 at-40°C |
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API 2Y Offshore and marine structural steel Application
API 2Y steel plates are specifically designed for offshore and marine applications, offering high strength, toughness, and corrosion resistance in harsh environments. In the oil & gas sector, they are widely used for offshore platforms, subsea structures, and floating production storage units (FPSOs) due to their ability to withstand extreme wave loads and saline conditions. The shipbuilding industry relies on API 2Y plates for hull construction, bulkheads, and deck components, ensuring durability under dynamic marine stresses.
For renewable energy projects, these plates are ideal for wind turbine monopiles and tidal energy structures, where fatigue resistance and weldability are critical. The chemical and petrochemical industries use API 2Y in pressure vessels, storage tanks, and piping systems exposed to corrosive offshore conditions. Additionally, their high impact toughness at low temperatures makes them suitable for Arctic and deep-water exploration equipment.
API 2Y’s compliance with stringent offshore standards ensures reliability for EPC contractors, marine engineers, and fabricators working in demanding marine and subsea environments. Its balanced mechanical properties and adaptability make it a preferred choice for safety-critical offshore infrastructure worldwide.
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