Alloy grade T11 steel offers high oxidation resistance, plasticity and thermal strength even at up 580℃. It has good weldability, needs preheating to 300℃ before welding and removing stress treatment after welding, has been widely used in high pressure, ultra-high pressure, subcritical power station boiler superheater, header and main steam duct. Grade T11 specified in ASTM A213 which do Ferrite and Austenitic boiler superheater and heat exchanger seamless steel tube.

• Standards: ASTM A213
• Dimension: 1/8” to 24”
• Wall thickness: SCH10 to 160
• Length: 1m to 12m or custom Length
• Application: For superheater, reheater pipe, header and steam pipe under 600℃ in high pressure, ultra-high pressure and subcritical power station, nuclear power heat exchanger and oil cracking unit furnace pipe.

T11 Equivalent Material

UNS	ASTM	EN	DIN	JIS	GB
K11597	P11	10CrMo5-5	1.7338	STBA23	12Cr1MoV

ASTM A213 T11 Tube Chemistry Composition

Grade	C	Mn	P	S	Si	Cr	Mo
T11	0.05-0.15	0.30-0.60	≤0.025	≤0.035	0.50-1.00	1.00-1.50	0.44-0.65

ASTM A213 T11 Tube Mechanical Properties

Material	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation(%)	Hardness(HRB)
T11	≥415	≥220	≥30	≤85

ASTM A213 covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. WLD steel supplies alloy steel ASTM A213 T11 seamless steel tubes manufactured in hot finished or cold finished and equivalent material for boiler and economizer, heater, superheater and reheater system in various sizes and specifications. If you are looking for this material, please contact us or get a quotation. Not only do we have all kinds of sizes, but we also have all kinds of sizes that are hard to find.