The material of ASTM A335 P21 alloy steel pipe belongs to ferritic steel, with the addition of chromium, molybdenum, and sometimes vanadium, which is called chrome-molybdenum pipe. The chemical composition of ASTM A335 grade P21 seamless pipe, with the addition of 2.65-3.35 chromium and 0.80-1.06 molybdenum. The minimum tensile strength of the bearing is 415 Mpa, and the minimum yield strength is 205 Mpa.
The seamless alloy steel pipe of ASTM A335 grade P21 supplied by GNEE is subjected to conditions such as full annealing, isothermal annealing or normalizing quenching and tempering. It also has good processing properties and can be processed by forming methods such as bending and curling, and is suitable for fusion welding. GNEE will produce according to user requirements and ensure that the quality of the steel pipe meets ASTM standards.
Products Data
Chemical composition of ASME SA335 P21 alloy steel pipe
| Grade | UNS | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Mo |
| P21 | K31545 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50 | 2.65~3.35 | 0.80~1.60 |
SA335 P21 Alloy Steel Pipe Mechanical Properties
| ASTM A335 Grade P21 Mechanical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Yield Strength | Tensile Strength | Elongation A5 min | |||||||
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage | ||||
| 415 | – | 60 | 30 | ||||||
|
ASTM A335 Grade P21 pipe Equivalent Designation |
|||||
|---|---|---|---|---|---|
| DIN | EN | BS | NFA | ASTM | ASME |
| – | – | – | ASTM A335 Grade P21 | ASME SA 335 Grade P21 | – |
A335 P21 Seamless Steel Pipe Specifications
| Process | Seamless / ERW / EFW |
|---|---|
| Shape | Round |
| Size Range | 1/2″ To 36″ NB |
| Thickness | Upto 40mm |
| Pipe End | Plain / Beveled End |
| End Protection | Plastic Cap |
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ASTM A335 p21 Alloy Steel Round pipes
Why Choose GNEE
GNEE is one of the leading alloy pipe manufacturers and suppliers in China, if you want to buy or import the best high quality A335 alloy pipe, always put the concept of quality first in the first place. Our responsibility is to provide steel pipe products with stable quality and high cost performance, or if you are looking for steel brands, please feel free to contact us. sales@gneetube.com
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