ASTM A672 CA65 EFW pipe is a designation buyers commonly use for 65 ksi electric fusion welded pipe made to ASTM A672. Amardeep Steel supplies this strength level in Grade B65, manufactured from A515 Grade 65 plate, and Grade C65, made from A516 Grade 65 plate. Buyers can refer to our ASTM A672 CB65 pipes for the relevant grade details, or compare the available strength levels through our ASTM A672 C60, C65 and C70 pipes. The complete ASTM A672 EFW pipe range covers other grades as well. Every order includes plate and weld certificates, radiography reports for the specified class and full heat traceability.
What Is ASTM A672 CA65 EFW Pipe?
ASTM A672 covers electric fusion welded steel pipe, made from pressure vessel plate with a filler metal weld, for high pressure service at moderate temperatures. The grade name tells you the plate: the letter is the plate family and the number is its minimum tensile strength in ksi.
What "CA65" Means in an A672 Order
A285 plate, which gives the A672 "A" grades, tops out at 55 ksi with Grade C, so there is no A285 plate at 65 ksi. A 65 ksi order is met with B65 from A515 plate or C65 from A516 plate. In ASTM A671 the same plates are called CB65 and CC65. Tell us which plate your drawing names, or we will advise.
ASTM A672 CA65 EFW Pipe Specifications
Parameter | Details |
|---|---|
Specification | ASTM A672 / ASME SA672 |
Grade | Supplied as B65 or C65 |
Plate Material | ASTM A515 Grade 65 (B65) or ASTM A516 Grade 65 (C65) |
Manufacturing Process | Electric fusion welded (EFW) with filler metal, longitudinal seam |
Size Range | 16 inch (406 mm) OD and larger as standard, smaller sizes on request |
Wall Thickness | Up to 75 mm (3 inch) |
Common Classes | Class 12, 22 and 32 |
Length | Single random, double random and cut lengths |
Ends | Bevelled end or plain end |
Test Certificate | EN 10204 3.1, with 3.2 available on request |
ASTM A672 CA65 EFW Pipe Chemical Composition
Element (%) | B65 | C65 |
|---|---|---|
Carbon (C) | 0.28 max | 0.24 max |
Manganese (Mn) | 0.90 max | 0.85 to 1.20 |
Phosphorus (P) | 0.025 max | 0.025 max |
Sulfur (S) | 0.025 max | 0.025 max |
Silicon (Si) | 0.15 to 0.40 | 0.15 to 0.40 |
Values are for plate up to 12.5 mm (A516) or 25 mm (A515) thick; thicker plate allows higher carbon. The weld deposit is analysed for every lot.
ASTM A672 CA65 EFW Pipe Mechanical Properties
Property | B65 | C65 |
|---|---|---|
Plate | A515 Grade 65 | A516 Grade 65 |
Tensile Strength | 450 to 585 MPa (65 to 85 ksi) | 450 to 585 MPa (65 to 85 ksi) |
Yield Strength, min | 240 MPa (35 ksi) | 240 MPa (35 ksi) |
Elongation in 50 mm, min | 23% | 23% |
B65 or C65: Which One to Order
Both reach 450 to 585 MPa tensile and 240 MPa yield. B65 uses coarse grain A515 plate for intermediate and higher temperatures. C65 uses fine grain A516 plate, preferred where notch toughness at lower temperatures matters.
A672 Pipe Classes Explained
Class (first digit) | Heat Treatment on Pipe | Class (second digit) | Weld Radiography and Pressure Test |
|---|---|---|---|
1x | None | x0 | Neither |
2x | Stress relieved | x1 | Radiography only |
3x | Normalized | x2 | Radiography and pressure test |
4x | Normalized and tempered | x3 | Pressure test only |
5x | Quenched and tempered |
Classes ending in 2 include full radiography and a hydrostatic test, which lets designers use a weld joint factor of 1.0 under ASME B31.3.
ASTM A672 Carbon Steel Grades Compared
Property | A55 | B60 | B65 | C60 | C65 |
|---|---|---|---|---|---|
Plate | A285 Gr C | A515 Gr 60 | A515 Gr 65 | A516 Gr 60 | A516 Gr 65 |
Grain Practice | Plain carbon | Coarse grain | Coarse grain | Fine grain | Fine grain |
Tensile Strength, MPa | 380 to 515 | 415 to 550 | 450 to 585 | 415 to 550 | 450 to 585 |
Yield Strength, min, MPa | 205 | 220 | 240 | 220 | 240 |
See our ASTM A672 A55 pipe for the lowest strength grade and our ASTM A672 C60, C65 and C70 pipes for fine grain plate.
Heat Treatment of ASTM A672 CA65 EFW Pipe
- Post weld heat treatment: 590 to 680 degrees Celsius (1100 to 1250 degrees Fahrenheit) for A515 and 590 to 650 degrees Celsius for A516 plate
- Normalizing: 925 degrees Celsius (1700 degrees Fahrenheit) maximum
Applications of ASTM A672 CA65 EFW Pipe
- High pressure process and utility lines at moderate temperature
- Gas and water transmission headers
- Steam and condensate lines in power plants
- Large diameter fabricated spools
Testing and Documentation
Every order of A672 CA65 pipe goes through the checks below at our testing facility or approved third party labs.
- Chemical analysis of plate and deposited weld metal
- Transverse tension test
- Transverse guided weld bend test
- Radiography of the weld seam (Class x1 and x2)
- Hydrostatic test (Class x2 and x3)
- Visual and dimensional inspection
Mill test certificates are issued to EN 10204 3.1, with 3.2 available on request. You can view our approvals on the certificates page.
Packing and Marking
Each length is marked with the specification, grade, class, size, heat number and manufacturer name. Bevelled ends are protected with caps or bevel protectors, and lengths are shipped loose with dunnage or in lashed bundles. Read more about our packing and despatch process.
Request a Quote for ASTM A672 CA65 EFW Pipe
Send us the OD, wall thickness, plate grade, class, length and quantity, and our team will reply with price and delivery. Use the enquiry form or reach us through the contact page.
Frequently Asked Questions
What is ASTM A672 CA65 pipe?
ASTM A672 CA65 is the name commonly used for 65 ksi electric fusion welded pipe under ASTM A672. The specification supplies it as Grade B65 (A515 Grade 65 plate) or Grade C65 (A516 Grade 65 plate), both with a tensile strength of 450 to 585 MPa.
Why is CA65 supplied as B65 or C65?
A285 plate, used for the A672 "A" grades, stops at 55 ksi. The 65 ksi level in A672 comes from A515 or A516 plate, which gives Grades B65 and C65.
What is the yield strength of A672 CA65 pipe?
Both B65 and C65 have a minimum yield strength of 240 MPa (35 ksi) and a tensile strength of 450 to 585 MPa.
Which is better for low temperature, B65 or C65?
C65, because it is made from fine grain A516 plate with better notch toughness at lower temperatures. B65 from A515 plate is intended for intermediate and higher temperatures.
