Alloy Steel T91 Tubes
We are known as a superior stockist unit of AS T91 Tubes, which is slightly magnetic if cold-worked. Alloy Steel T91 Seamless Tubes has lower carbon to minimize carbide precipitation and is used in high-temperature applications. Alloy Steel T91 Welded Tubes offers improved machinability bar with excellent properties. Alloy Steel T91 EFW Tubes offers exceptional corrosion resistance with low carbon variation for heavy gauge welded sections. Alloy Steel T91 ERW Tubes does not suffer uniform corrosion, like carbon steel, when exposed to wet environments. Alloy Steel T91 Round Tubes are more resistant to atmospheric and other mild types of corrosion than the other type of steels. The slightly higher price point of Alloy Steel T91 Square Tubes is well worth it in areas with high chloride exposure, especially the coast and heavily salted roadways.
Applications of Alloy Steel T91 Rectangular Tubes which illustrate these features include: Pulp and paper, desalination, chemical processing, chemical tanker ships, heat exchangers, metal refining, flue gas desulphurisation (FGD), swimming pool structural components, offshore oil and gas, submarines, aggressive food processing e.g. soy sauce, condenser tubing. The resistance of Alloy Steel T91 Electropolish Tubes near the seashore will also be dependent on whether the stainless surface can be rinsed by rainfall, which will reduce the tendency for surface chlorides to concentrate by evaporation. Precipitation hardening Alloy Steel T91 Instrumentation Tubes contain alloying additions such as aluminum which allow them to be hardened by a solution and aging heat treatment.
UNS | DIN | EN | ASTM |
K91560 | 1.4903 | 9Cr-1Mo-V-Nb | A213 Grade T91 |
Element | A213 Gr T91 |
C, % | 0.08-0.12 |
Mn, % | 0.30-0.60 |
P, % | 0.020 max |
S, % | 0.010 max |
Si, % | 0.20-0.50 |
Cr, % | 8.00-9.50 |
Mo, % | 0.85-1.05 |
ASTM A213 | Tensile Strength, MPa | Yield Strength, MPa | Elongation, % | Hardness, HBW |
Grade T91 | 585 min | 415 min | 20 min | 250 max |
Alloy steel T91 tubes are used in the energy industry for high temperature and very low-temperature service (cryogenic), or for applications with very high pressures.
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