What is A671 GR CC65 material?
A671 CC65 is an American Standard material standard, specifically referring to the CC65 grade of steel pipe in the ASTM A671 standard. This type of steel pipe is manufactured using steel plates that meet the ASTM A516 grade under (e.g., Gr. 65 material), and is mainly used in low-temperature environment application scenarios.
Plates and standards used for steel pipes
| Pipe Grade | Steel Type | Plate Standard ASTM | Plate Grade |
| CC 65 | Plain Carbon Steel, Sedated Steel, Fine Grain | A516/A516M | Grade 65 |
Heat treatment parameters
|
Pipe Grade |
ASTM Standard |
Post-weld heat treatment Temperature (Stress relief) °F (°C) |
Normalising temperature max Otherwise specified except °F (°C) |
Quenching temperature max Otherwise specified except °F (°C) |
tempering temperature min °F (°C) |
Precipitation hardening Heat treatment temperature °F (°C) |
| CC 65 | A516/A516M(65) |
1100～1200 (590～650) ⓒ |
1700 (925) |
1700 (925) |
1100 (590) ⓓ |
- |
|
ⓐ A '-' in the table indicates no requirement. ⓑ The number in the grade indicates the minimum tensile strength in ksi. ⓒ In any case, the post-weld heat treatment temperature cannot be higher than the steel mill's tempering temperature. ⓓ Tempering temperature is 1100 ~ 1300°F (590 to 705°C) if fast cooling is used according to A516 / A516M. |
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