ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91, T12, T11 alloy pipe is a ferritic and austenitic alloy steel seamless steel pipe used in boilers, superheaters and heat exchangers.
ASTM A213 Grade T911 Alloy Steel Seamless Tubes are Carbon Steel Tubes with subsequent addition of chromium, molybdenum and sometimes vanadium are known as chrome moly Tubes. ASTM Specification alloy steel Tubes are used for high temperature service applications. Seamless Alloy Steel Tubes according to ASTM A213 Grade T911 are reheated and furnished in full annlealed,isothermal annealed or normalised quenched and tempered condition. ASTM A213 Grade T911 Alloy Steel Seamless Tubes have a typical chemistry with additions of 8.5-9.5 Chromium and 0.90-1.10 Molybdenum. Bearing minimum tensile strength of 415 Mpa ASTM A213 Grade T911 Tubes have a minimum yield strength of 205 Mpa.
ASTM A213 Grade T911 Properties
| Chemical Properties | |||||||||
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
| 0.09-0.13 | 0.10-0.50 | 0.30-0.60 | 0.020max | 0.010max | 0.90-1.10 | – | 8.5-9.5 | – | – |
| Mechanical Properties | |||||||||
| Yield Strength | Tensile Strength | Elongation A5 min | |||||||
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage | ||||
| 415 | – | 60 | 30 | ||||||
| Equivalent Designation | |||||
| DIN | EN | BS | NFA | ASTM | ASME |
| – | EN X11CrMoWVNb9-1-1 | – | ASTM A213 Grade T911 | ASME SA 213 Grade T911 | – |
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