Grade T23 P23 Alloy Steel Seamless Pipes , High-temperature Strength Steam Boiler Tubes

Name : T23/P23 (7CrWVMoNb9-6) ferritic/bainitic-martensitic Seamless hot finished tubes and pipes

These Pipes Can be used for: Boiler superheater and reheater tubes and water wall panels in complex fossil-fuelled power plants and HRSG (Heat Recovery Steam Generators)

DEFINITION

Grade T/P23 is a ferritic/bainitic-martensitic (2.25 % chromium, 1.6 % tungsten, 0.2 % molybdenum) steel, micro-alloyed with vanadium and niobium and having controlled boron and nitrogen contents according to ASTM A 335, A 213 or to EN 10216-2 standard under the designation 7CrWVMoNb9-6. It was introduced into the ASME Code with Code Case 2199 in 1995.

APPLICATION

This grade can be used for:

• Boiler superheater and reheater tubes and water wall panels in complex fossil-fuelled power plants and HRSG (Heat Recovery Steam Generators)
• Headers and steam piping in fossil-fuelled power plants
• Repair and revamping projects involving the replacement of steels such as ASTM T/P22 (EN10216-2 10CrMo9-10), T/P12 (13CrMo4-5) or 14MoV6-3.

CHALLENGES

Grade T/P23 exhibits superior high-temperature strength and creep behavior compared to other low-alloy ferritic steels.

Accordingly, the weight of boiler and piping components in this steel can be reduced and they possess increased resistance to thermal fatigue. Compared with austenitic steels, grade T/P23 has higher heat transfer and lower thermal expansion coefficients. Low tube hardness in the as-welded condition cuts out the need for preheating and post-weld heat treatment.

Chemical Composition - ASTM A213 T23 Tubes

• Physical Properties - ASTM A213 T23 Tubes

• ASTM A213/ASME SA213 T23 Tubes Specification
• Port: Tianjin, Qingdao , Shanghai
  Payment Terms: L/C, T/T, Western Union
  Standard: ASTM A213, ASME SA213
  Equivalent Standards: EN 10216-2, ASTM A213, GOST 550-75
  Material: T23, K41650
  Equivalent Material: P23,K41650
• SPECIAL NOTICE
• To the Users of ASME Boiler and Pressure Vessel Code
• Code Case 2199, 2199-1, 2199-2, and 2199-3
  2.25Cr-1.6W-V-Cb Material (Section I)
• Other Available Products of Alloy Steel ASTM A213 T23 Tube

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