| Type: | Seamless |
|---|---|
| Technique: | Cold Drawn |
| Surface Treatment: | Varnish,Black Painting,Oild |
| Usage: | Pipeline Transport, Chemical Industry |
| Section Shape: | Round |
| Od: | 19.05mm~114.3mm |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier ASTM A333 Grade 8 covers all seamless and welded carbon and alloy steel pipe intended for use at low temperatures. The pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their micro structure. Tensile tests, impact tests, hydro static tests, and nondestructive electric tests shall be made in accordance to specified requirements.
| Element | Grade 8 |
| Carbon, max | 0.13 |
| Manganese | 0.90 max |
| Phosphorus, max | 0.025 |
| Sulphur, max | 0.025 |
| Silicon | 0.13-0.32 |
| Nickel | 8.40-9.60 |
| Chromium | -- |
| Copper | -- |
| Aluminum | -- |
| Vanadium, max | -- |
| Columbium, max | -- |
| Molybdenum, max | -- |
For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.
| Grade 8 | ||
| psi | MPa | |
| Tensile strength Min | 100 000 | 690 |
| Yield strength Min | 75 000 | 515 |
| Longitudinal | Transverse | |
| Elongation in 2 in or 50 mm (or 4D), min, % | ||
| Basic minimum elongation for walls 5/16 in. [8mm] and over in thickness, strip tests, and for all small sizes tested in full section. | 22 | -- |
| When standard round 2-in, or 50-mm gage length or proportionally smaller size test specimen with the gage length equal to 4D (4 times the diameter) is used | 16 | -- |
| For strip tests, a deduction for each 1/32 in [0.8 mm] decrease in wall thickness below 5/16 in [8 mm] from the basic minimum elongation of the following percentage | 1.25 | -- |
Elongation in 2 in or 50 mm, min, %
| Wall Thickness | Grade 8 | ||
| in | mm | Longitudinal | Transverse |
| 5/16 (0.312) | 8 | 22 | -- |
| 9/32 (0.281) | 7.2 | 21 | -- |
| 1/4 (0.250) | 6.4 | 20 | -- |
| 7/32 (0.219) | 5.6 | 18 | -- |
| 3/16 (0.188) | 4.8 | 17 | -- |
| 5/32 (0.156) | 4 | 16 | -- |
| 1/8 (0.125) | 3.2 | 15 | -- |
| 3/32 (0.094) | 2.4 | 13 | -- |
| 1/16 (0.062) | 1.6 | 12 | -- |
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}