In ASTM A213, in addition to the requirements for tensile properties and hardness, the following tests are also required: Flattening Test and Flaring Test.
ASTM A213 T11 (ASME SA213 T11) is a low-alloy seamless steel tube containing 1.00–1.50% Cr and 0.44–0.65% Mo, with excellent heat-resistant properties, suitable for high-temperature and high-pressure applications.
T11 is commonly used in boilers, superheaters, and heat exchangers. UNS number: K11597.
| Grade | Composition, % | ||||||
| C | Mn | P | S | Si | Cr | Mo | |
| T11 | 0.05 ~ 0.15 | 0.30 ~ 0.60 | 0.025 max | 0.025 max | 0.50 ~ 1.00 | 1.00 ~ 1.50 | 0.44 ~ 0.65 |
Tensile Properties
| Grade | Tensile Strength | Yield Strength | Elongation in 2 in. or 50 mm |
| T11 | 60 ksi [415 MPa] min | 30 ksi [205 MPa] min | 30 % min |
Hardness Properties
| Grade | Brinell/Vickers | Rockwell |
| T11 | 163 HBW / 170 HV | 85 HRB |
Other Test Items
Out Diameter Inspection
Wall Thickness Inspection
End Inspection
Straightness Inspection
UT Inspection
Appearance Inspection
ASTM A213 alloy seamless steel tubes are produced either by cold-drawn or hot rolled, as specified. Grade TP347HFG shall be cold finished. Heat treatment shall be done separately and in addition to heating for hot forming. The ferritic alloy and ferritic stainless steels shall be reheated. On the other hand, austenitic stainless steel tubes shall be furnished in the heat-treated condition. Alternatively, immediately after hot forming, while the temperature of the tubes is not less than the minimum solution temperature, tubes may be individually quenched in water or rapidly cooled by other means.
JIS G3441Alloy Seamless Steel tubes
ASTM A519 Alloy seamless steel pipe
ASTM A335 Alloy seamless steel piepe
