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ASTM A335 steel pipe is the American Society for Testing and Materials' seamless ferritic alloy nominal pipe for high temperature use.
Chemical composition of ASTMA335P91 seamless steel pipe: carbon: 0.08~0.12, manganese: 0.30~0.60, phosphorus: ≤0.020, sulfur ≤0.010, silicon: 0.20~0.50, chromium: 8.0~9.5, molybdenum: 0.85~1.05, vanadium: 0.18~ 0.25, Nitrogen: 0.030~0.070, Nickel: ≤0.40, Aluminum: ≤0.040, Niobium: 0.06~0.10
Mechanical properties: tensile strength ≥585, yield strength ≥415, elongation: ≥20% impact energy: ≥35J hardness: ≤250HB
Steel pipe specifications: outer diameter: 57mm~762mm, wall thickness: 5.0~130mm
Production method: hot rolling, forging rolling, delivery status: heat treatment.
1. Outer diameter: 3.5-250mm
2. Wall thickness: 0.5-30mm
3. Length: 2-12m
4. Performance level: P91
ASTM A335 P91 seamless steel pipe not only has high oxidation resistance and high temperature steam corrosion resistance, but also has good impact toughness, high and stable long-lasting plasticity and thermal strength properties. When the service temperature is lower than 620°C, its allowable stress is higher than that of austenitic stainless steel. Above 550°C, the recommended design allowable stress is approximately twice that of T9 and 2.25Cr-1Mo steel.
ASTM A335 P91 Steel Pipe is available in nominal bore sizes from 1/8 inch to 24 inches. Outside diameters and wall thicknesses vary, and they are available in different sizes from sch20 to XXS. P91 chromium pipes are available in wall thicknesses ranging from 2mm to 14mm and lengths up to 16000mm. Pipes come in various forms such as round, square, rectangular, and hydraulic, with flat ends, beveled ends, and threaded ends. If you have a project that requires P91 steel pipe, please contact us in time to inquire! sales@gneetube.com
seamless alloy steel tubing A335
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FAQ
Q.What is the difference between ASTM A335 P91 Type 1 and Type 2?
A.ASTM A335 P91 Type 1 & Type 2 have subtle differences mainly in elements Mn, S, Si, N, Sn and Sb content, and Type 2 has stricter requirements on element content than Type 1. P91 type 1 and 2 shall have a hardness within the range of 190 to 250 [HBW] or 196 to 265 [HV] or 91 HRBW to 25 HRC.
Q.Why choose you?
A.Firstly quality, secondly price, we can give you both. Our service formula: good quality + good price + good service = customer's trust.
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