ASTM A671 is a standard established by the American Society for Testing and Materials (ASTM), primarily intended for the specification of electric-fusion-welded steel pipes. These pipes are utilized in high-temperature and high-pressure service conditions, such as in piping systems within the petroleum and chemical industries.
What is the yield strength of ASTM A671?
| Grade | Mechanical Composition | ||
| Yield point | Tensile Stregth | Elongation | |
| A 50 | 185 | 345 | |
| A 45 | 165 | 450 | 30 |
| CA 55 / A 55 | 205 | 515 | 27 |
| CB 60 / B 60 | 220 | 550 | 25 |
| B55 | 205 | 515 | 27 |
| CB 65 / B 65 | 240 | 585 | 23 |
| C55 | 205 | 515 | 27 |
| CB70 / B70 | 260 | 620 | 21 |
| CC 60 / C 60 | 220 | 550 | 25 |
| CC 70 / C 70 | 260 | 620 | 21 |
| CC 65 / C 65 | 240 | 585 | 23 |
What is the Astm a671 material specifications
| ASTM A671 Pipe Specification | ASTM A671 /ASME SA671 |
| Grades |
ASTM A671 Grade CC60 ASTM A671 Grade CC65 ASTM A671 Grade CC70 |
| Type | EFW (ELECTRIC FUSION WELDED PIPES) |
| Class Designation |
CLASS 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42 |
| Outer Diameter Size | 16" NB To 100" NB (Nominal Bore Size) |
| Wall Thickness | Schedule 20 To Schedule XXS (Heavier On Request) Up to 250 mm Thickness |
| ASTM A671 EFW Pipes Length | 5 To 7 Meters, 09 To 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| Ends | Plain Ends / Beveled Ends / Coupling |
| Delivery Conditions | As Rolled, Normalizing Rolled, Thermomechanical Rolled / Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered - BR / N / Q /T |
| Coating | Epoxy Coating / Colour Paint Coating / 3LPE Coating. |
| Other Testing | NACE MR0175, NACE TM0177, NACE TM0284, CHARPY V-NOTCH TEST, RADIOGRAPHIC EXAMINATION, XRAY, ULTRASONIC EXAMINATION, LIQUID PENETRANT, MAGNETIC PARTICLE, HIC TEST, SSC TEST, SWC, H2 SERVICE, IBR, PWHT etc. |
| Dimension | All Pipes Is suppliers and Inspected / Tested to the Relevant standards including ASTM, ASME, API. |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| Material Test Certificate | suppliers Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
What is the composition of ASTM A671?
| Specification | Steel grade | Chemical composition | Remarks | |||||
| C | Si | Mn | P | S | Ti | |||
| Pipes for pressure service ASTM A671, A672 |
-/A45 | -/0.17 | - | 0.98 | 0.035 | 0.035 | - | A671/ A672 |
| -/A50 | -/0.22 | - | ||||||
| CA55/A55 | 0.28 | - | ||||||
| -/B55 | -/0.20 | 0.13 ~0.45 |
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| CB60/B60 | 0.24 | |||||||
| CB65/B65 | 0.28 | |||||||
| CB70/C70 | 0.31 | 1.30 | ||||||
| -/C55 | -/0.18 | 0.55 ~0.98 |
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| CC60/C60 | 0.21 | |||||||
| CC65/C65 | 0.24 | 0.79 ~1.30 |
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| CC70/C70 | 0.27 | |||||||
astm a671 vs a106
| Feature | ASTM A671 | ASTM A106 |
|---|---|---|
| Definition | Specifies requirements for electric-fusion-welded steel pipes intended for atmospheric and lower-temperature service, as well as high-pressure applications (particularly where notch toughness at lower temperatures is required). | Covers seamless carbon steel pipe for high-temperature service (generally for use in piping systems above -29°C (-20°F) and up to specified temperatures depending on grade). |
| Manufacturing Process | Electric Fusion Welding (EFW) | Seamless (hot-rolled or cold-drawn/finished) |
| Primary Use | Atmospheric and lower-temperature service; high-pressure applications requiring notch toughness at low temperatures. | High-temperature service in industries like petroleum refineries, chemical plants, power generation, etc. |
| Material Types | Typically includes carbon and low-alloy steels. | Carbon steel only (Grades A, B, C). |
| Size Range | Generally larger sizes, often used for larger diameter pipelines. | Wide range of sizes, but typically smaller than A671 in many applications due to seamless manufacturing limitations. |
| Temperature Range | Designed for lower temperature service with good notch toughness properties. | Designed for high-temperature service, with specified maximum temperatures based on grade. |
| Testing Requirements | Includes specific requirements for notch toughness testing (e.g., Charpy V-notch impact tests) at low temperatures. | Testing focuses on tensile strength, yield strength, elongation, and hardness at room temperature and elevated temperatures. |
| Applications | Used in pipelines, pressure vessels, and structural applications where low-temperature toughness is critical. | Widely used in high-temperature and high-pressure piping systems in refineries, power plants, and other industrial settings. |
ASTM A671 Carbon Steel EFW Pipe factory
