API 5L X70 PLATE / SHEET / COIL
API 5L X70 plates, sheets, and coils are high-strength carbon steel products widely used in oil & gas transmission pipelines, pressure vessels, and heavy structural applications. Also known as L485, this grade offers a minimum yield strength of 70 Ksi (485 MPa), providing outstanding strength, toughness, and weldability for extreme high-pressure service conditions.
Manufactured in compliance with API 5L and ISO 3183 standards, API 5L X70 plates and coils ensure consistent mechanical properties, excellent formability, and superior resistance to mechanical and environmental stress. These products are ideal for both onshore and offshore applications operating under severe service conditions.
API 5L X70 plates, sheets, and coils are available in a wide range of thicknesses, widths, and surface finishes to meet demanding fabrication and project requirements. They are extensively used for pipe manufacturing, structural fabrication, storage tanks, and heavy industrial engineering projects.
Revinox is a trusted supplier of API 5L X70 plates, sheets, and coils in India, delivering products that meet international quality standards with excellent dimensional accuracy, durability, and long service life.
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Applications of API 5L X70 Plate, Sheet & Coil
| ● Long-Distance Oil & Gas Transmission Pipelines |
| ● High-Pressure Pressure Vessels & Storage Tanks |
| ● Offshore & Subsea Pipeline Systems |
| ● Heavy Structural & Industrial Fabrication |
Specification Table of API 5L X70 Plate / Sheet / Coil
| Specification | Details | |
|---|---|---|
| Product Specification | API 5L, PSL-1, PSL-2 | |
| Thickness | 3 mm to 150 mm (Custom thickness available) | |
| Width | 1000 mm to 3000 mm | |
| Form | Plate, Sheet, Coil | |
| Grade | API 5L X70 / L485 | |
Delivery Condition
| PSL | Delivery Condition | Product Grade |
|---|---|---|
| PSL 1 | As-rolled, normalized | X70 |
| PSL 2 | Normalized, normalized & tempered | X70N |
| Quenched and tempered | X70Q | |
| Thermomechanically rolled (TMCP) | X70M |
Process of Manufacturing
| Product Form | Manufacturing Process | PSL 1 | PSL 2 |
|---|---|---|---|
| Plate | Hot Rolled (HR) | ✔ | ✔ |
| Plate | Controlled Rolled (CR) | ✔ | ✔ |
| Plate | Thermo-Mechanical Controlled Process (TMCP) | ✔ | ✔ |
| Sheet | Hot Rolled Pickled & Oiled (HRPO) | ✔ | ✔ |
| Coil | Hot Rolled Coil (HRC) | ✔ | ✔ |
| Heat treatment such as normalizing, quenching & tempering, or TMCP is applied as per API 5L PSL 1 or PSL 2 requirements to achieve the specified mechanical properties. | |||
Chemical Composition Table For API 5L X70 Plate / Sheet / Coil
| Steel Grade | Mass fraction, % (Heat & Product Analysis) | ||||||
|---|---|---|---|---|---|---|---|
| C | Mn | P | S | V | Nb | Ti | |
| max | max | max | max | max | max | max | |
| API 5L X70 Plate / Sheet / Coil (PSL 1) | |||||||
| X70 | 0.28 | 1.70 | 0.030 | 0.030 | d | d | d |
|
a. Cu ≤ 0.50%, Ni ≤ 0.50%, Cr ≤ 0.50%, Mo ≤ 0.15% b. Mn increase permitted with reduced carbon as per API 5L limits c. Nb + V ≤ 0.06% unless otherwise agreed d. Nb + V + Ti ≤ 0.15% e. No deliberate addition of Boron; residual B ≤ 0.001% |
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Chemical Composition Table for API 5L X70 Plate / Sheet / Coil
| Steel Grade | Mass fraction, % (Heat & Product Analysis) | Carbon Equivalent | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Si | Mn | P | S | V | Nb | Ti | Other | CE IIW | CE Pcm | |||||||||||
| max | max | max | max | max | max | max | max | max | max | ||||||||||||
| API 5L X70 Plate / Sheet / Coil (PSL 2) | |||||||||||||||||||||
| X70N | 0.18 | 0.45 | 1.85 | 0.025 | 0.015 | 0.10 | 0.05 | 0.04 | d,e,l | 0.49 | 0.25 | ||||||||||
| X70Q | 0.16 | 0.45 | 1.85 | 0.025 | 0.015 | 0.08 | 0.05 | 0.04 | e,l | 0.49 | 0.25 | ||||||||||
| X70M | 0.18 | 0.45 | 1.85 | 0.025 | 0.015 | d | d | d | e,l | 0.49 | 0.25 | ||||||||||
|
a. Carbon equivalent limits apply as per API 5L PSL 2
requirements b. Mn increase permitted with reduced carbon as per API 5L limits c. Nb + V ≤ 0.06% unless otherwise agreed d. Nb + V + Ti ≤ 0.15% e. Cu ≤ 0.50%, Ni ≤ 0.30%, Cr ≤ 0.30%, Mo ≤ 0.15% unless otherwise agreed l. No intentional addition of Boron; residual B ≤ 0.001% |
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Tensile and Yield Strength – API 5L X70 Plate / Sheet / Coil (PSL 1 & PSL 2)
Tensile & Yield Strength – API 5L X70 Plate / Sheet / Coil
| Steel Grade | Yield Strength | Tensile Strength | Elongation (%) | ||
|---|---|---|---|---|---|
| Min (MPa) | Min (PSI) | Min (MPa) | Min (PSI) | ||
| X70 | 485 | 70,300 | 570 | 82,700 | As per API 5L |
Notes:
• Mechanical properties apply to API 5L X70 plates, sheets, and coils.
• Elongation values shall be calculated as per API 5L specification.
• Material is suitable for forming, welding, and high-pressure pipeline
applications.
Dimensional Tolerances – API 5L X70 Plate / Sheet / Coil
| Parameter | Tolerance |
|---|---|
| Thickness | ± 10% of specified thickness |
| Width | ± 5 mm |
| Length | −0 / +10 mm |
| Flatness | As per mill standard / agreement |
Notes:
• Applicable to API 5L X70 plates, sheets, and coils only.
• OD, out-of-roundness, and wall thickness tolerances are not applicable to flat
products.
• Special tolerances can be supplied on request.