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ASTM A335 P22 Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
With decades of production and export experience in this field, YUHONG GROUP is proud to say that we can handle kinds of projects, such as heat exchanger / boiler projects, marine projects, oil & gas projects etc. Every year we sell more than 80000 tons of stainless steel pipes and tubes. Our products have been well known among the customers around the world. YUHONG GROUP has build long term relationship with these valuable clients, which already cover more than 65 countries.
What is ASTM A335 pipe?
We also call ASTM A335 pipe as ASME S/A335 Chrome-Moly pipe, it is a type of seamless pipe could be used in high temperature environments of 540 – 750 °C.
The A335 pipes are generally called chrome moly pipe as they have a high level of Chromium and Molybdenum presence in it. While Molybdenum increases the overall strength, resistance, elasticity, hardenability and overall quality, moly ensures that the material is more resistant to softening, restrains the growth of grains and lessens the chances of embrittlement. It is the single additive that is responsible for the increase in high temperature resistance and it also improves the corrosion resistance to steel.
ASME SA335 Grade P22 Pipe Tensile Requirements
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| Seamless | ||||
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| P-5 | P-9 | P-11 | P-22 | P-91 |
Tensile Strength, min., psi |
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| ksi | 60 | 60 | 60 | 60 | 85 |
| MPa | 415 | 415 | 415 | 415 | 585 |
Yield Strength, min., psi |
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| ksi | 30 | 30 | 30 | 30 | 60 |
| MPa | 205 | 205 | 205 | 205 | 415 |
Equivalent Grades Of ASTM A335 P22 Alloy Steel Pipe
Equivalent material | UNS | BS | ISO | ASTM | ASME | JIS G 3458 | DIN | NK | ABS | LRS |
T22, 10CrMo910, 10CrMo9-10, 1.7380, 11CrMo9-10, 1.7383 | K21590 | 3604 P1 622 | 2604 II TS34 | A335 P22 | SA335 P22 | STPA 24 | 17175 | KSTPA 24 | ABS 13 | Sec 2 |
A335 P22 Welded Pipe Chemical And Physical Properties
P, % | S, % | Cr, % | C, % | Si, % | Mn, % | Mo, % |
0.025 max | 0.025 max | 1.90-2.60 | 0.015 max | 0.50 max | 0.30-0.61 | 0.87-1.13 |
Mechanical Properties Of ASTM A335 Gr P22 Pipes
Yield Strength, MPa | Tensile Strength, MPa | Elongation, % |
205 min | 415 min | 30 min |
Applications:
Pharmaceutical equipment
Seawater equipment
Pulp and paper
Off-shore Oil drilling companies
Chemical equipment
Petrochemicals
It is also extensively used in making steam boilers, boiler parts, boiler drums, pressure vessels, condensers, and heat exchangers.
