ASTM A213 tubing has been widely used in high temperature services especially for the boiler and superheater. Tube material could be in alloy steel and stainless steel, and manufactured in seamless of hot rolled or cold drawn. so this pipe usually used in very important places and the price is much higher than normal carbon pipes. Common grades are T9, T11, T12, T21, T22, T91 and stainless grades in TP304 or TP316.
Standard: ASTM A213 for alloy and stainless steel tube
Grade: T9, T11, T22, T91, T92, TP304/L, TP316/L, TP317/L, TP321/H etc
OD: 1/8” to 16”. 3.2mm to 406mm
WT: 0.015” to 0.500”, 0.4mm to 12.7mm
Length: 10ft, 20ft, 40ft, or customized length
This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated grades T5, TP304, etc. Which is listed in tables 1 and 2.
The size range for this tube is from internal diameter 1/8 inch and up to 5 inch OD. Thickness from 0.015 to 0.500 inch (0.4 mm to 12.7 mm). Also if for other size required, it could be specified in the order, also should be stated with minimum and average thickness.
For ASTM A213 low alloy steel tube including the grades ASTM A213 T2, T5, T5b, T5c, T9, T11, T12, T17, T21, T22, T23, T24, T36, and ASTM A213 T91, ASTM A213 T92, T122, T911, and covers the Austenitic and Ferritic stainless steel, in ASTM A213 TP201, TP202, XM-19, TP304, TP304L, TP304H, TP304N, TP304LN, TP309S, TP309H, TP309LMoN, TP309Cb, TP309Hcb, TP310S, TP310H, and TP316, TP316L, TP316H, TP316Ti, TP316N, TP316LN, TP317, TP317L, TP321, TP321H, and etc. For more grades please review the standard of ASTM A213. These are applied at the high temperature environment, for example to used at over heat exchanger and re-heat exchanger.
Chemical properties for ASTM A213 T5, T9, T11, T12, T21, T22, TP304, TP316
a. For grades T9, T11, T22, heat treatment methods are full or isothermal anneal, normalize and temper. (For conditions in later option, tempering temperature for T9 and T22 is above 675℃, T11 is above 650℃.)
b. For grades T91, T92, shall be normalize and temper, where normalizing shall be above 1040℃, tempering shall be above 730℃. As the delivery conditions.
Material available with seamless alloy in Grade T9, T11, T12, T21, T22, T91.