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ASTM A213 T91 Alloy pipe
 

 

ASTM A213 T91 Seamless alloy tube

ASTM A213 T91 is the part of ASTM A213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, Heat-Exchanger Tubes.

Chemical Composition(%) for ASTM A213 T91 Low Alloy Steel

UNS Designation K31545
Carbon 0.05–0.15
Manganese 0.30–0.60
Phosphorus 0.025
Sulfur 0.025
Silicon 0.50–1.00
Nickel
Chromium 2.65–3.35
Molybdenum 0.80–1.06
Vanadium
Boron
Niobium
Nitrogen
Aluminum
Tungsten
Other Elements

Mechanical properties for ASTM A213 T21 Low Alloy Steel

Tensile strength(min) 415Mpa
Yield strength(min) 220Mpa
Elongation 30%
Delivery condition annealed