ASME SA213/Sa213m T91 seamless steel tube is an alloy steel tube with high strength and high heat resistance. It is based on 9Cr-1Mo steel and manufactured by reducing carbon content and adding trace elements such as V and Nb for alloying. Its production complies with ASME standards and typically utilizes seamless processing to ensure excellent internal quality of the tube. T91 steel tube performs exceptionally well in high-temperature and high-pressure environments and finds wide applications in boilers, heat exchangers, and other equipment, especially in the high-temperature sections of large-scale power plants in domestic settings.
1. ASME SA213/Sa213m T91 Production Standard:
ASME SA213/Sa213m T91 tube is manufactured according to the standard ASME SA213/Sa213m, which is issued by the American Society of Mechanical Engineers (ASME) for the manufacturing of seamless alloy steel tubes for boilers and heat exchangers.
2. ASME SA213/Sa213m T91 Processing Method:
ASME SA213/Sa213m T91 tube is typically processed using seamless manufacturing techniques, meaning the tube is produced continuously without welding seams. Seamless processing ensures higher internal quality of the tube, making it more reliable for high-temperature and high-pressure applications.
3. ASME SA213/Sa213m T91 Chemical Composition Table:
The chemical composition of ASME SA213/Sa213m T91 tube typically meets the following requirements (the values below are typical, actual standards may vary):
|
Element
|
Chemical Composition (%)
|
|
C (Carbon)
|
0.08 - 0.12
|
|
Mn (Manganese)
|
0.30 - 0.60
|
|
P (Phosphorus)
|
≤ 0.020
|
|
S (Sulfur)
|
≤ 0.010
|
|
Si (Silicon)
|
0.20 - 0.50
|
|
Cr (Chromium)
|
8.00 - 9.50
|
|
Mo (Molybdenum)
|
0.85 - 1.05
|
|
Ni (Nickel)
|
≤ 0.40
|
|
V (Vanadium)
|
0.18 - 0.25
|
|
N (Nitrogen)
|
≤ 0.030
|
4. ASME SA213/Sa213m T91 Mechanical Properties Table:
The mechanical properties of ASME SA213/Sa213m T91 tube also need to meet certain requirements. Below are the typical mechanical properties (for reference only):
|
Property
|
Requirement
|
|
Yield Strength
|
≥ 415 MPa
|
|
Tensile Strength
|
≥ 585 MPa
|
|
Elongation
|
≥ 20%
|
|
Impact Energy
|
No special requirement
|
5. ASME SA213/Sa213m T91 Tube Application:
ASME SA213/Sa213m T91 tube is commonly used in boilers, heat exchangers, and other equipment operating under high temperature and high pressure conditions, especially in industries such as petrochemical, power generation, and fertilizer. Due to its excellent properties including high temperature resistance, pressure resistance, and corrosion resistance, it is suitable for various harsh working environments.
ASME SA213 T91 tube |Sa213m T91 tube |
