What is the material composition of SA213 T12 pipe

ASTM A213 T12 high-pressure alloy seamless steel pipe is essentially a ferritic heat-resistant alloy pipe with 1.25Cr-0.5Mo as its core (similar to the 15CrMoG of the Chinese national standard 5310).

By precisely controlling the carbon content to 0.05-0.15%, combined with chromium (0.8-1.25%) to enhance oxidation resistance and molybdenum (0.44-0.65%) to improve high-temperature creep strength, it maintains stable performance even in high-pressure environments above 540℃. Unlike ordinary carbon steel, the alloy composition of T12 makes it a "safety barrier" for high-risk scenarios such as thermal power plants and petrochemical plants.

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ASTM A213 T12 Tube chemical composition

Grade	C≤	Mn	P≤	S≤	Si≤	Mo
T12	0.15 max	0.30~0.60	0.025	0.025	0.50~1.0	0.44~0.65

 

ASTM A213 T12 Tube mechanical properties

Grade	Tensile Strength, MPa	Yield Strength, MPa	Elongation, %	Hardness, HB
T12	415 min	220 min	30 min	163 max

 

Alloy Steel T12 Seamless Tube Outside Diameter and Tolerance

Outside Diameter	OD Tolerance	WT Tolerance	Ovality Tolerance	Cut Length Tolerance
OD≤ 12, 7 mm	± 0, 13 mm	± 15 %	–	+ 3, 18 mm, – 0 mm
12, 7 mm < OD ≤ 38, 1 mm	± 0, 13 mm	± 10 %	max, 1, 65 mm	+ 3, 18 mm, – 0 mm
38, 1 mm < OD ≤ 88, 9 mm	± 0, 25 mm	± 10 %	max, 2, 41 mm	+ 4, 76 mm, – 0 mm

 

ASTM A213/ ASME SA213 T12 Alloy Steel Tube Wall thickness & Tolerance

Hot rolled ASTM A213/ ASME SA213 T12 Alloy Steel Tube	Outside Diameter, mm	Tolerance, %
	OD≤101.6, WT≤2.4	+40/-0
	OD≤101.6, 2.4＜WT≤3.8	+35/-0
	OD≤101.6, 3.8＜WT≤4.6	+33/-0
	OD≤101.6, WT>4.6	+28/-0
	OD>101.6, 2.4＜WT≤3.8	+35/-0
	OD>101.6, 3.8＜WT≤4.6	+33/-0
	OD>101.6, WT>4.6	+28/-0
Cold Drawn ASTM A213/ ASME SA213 T12 Alloy Steel Tube	Outside Diameter, mm	Tolerance, %
	OD≤38.1	+20/-0
	OD>38.1	+22/-0

 

SA213 T12 Tube Specification

Standard	ASTM A213 T12, SA213 T12 (with IBR Test Certificate)
Specifications	ASTM A213 & ASTM A209 (T1 , Ta, T1b) BS/3059/90/PartII/620 & 622 DIN/17175/13CrMo44 DIN/17175/10CrMo910 DIN/17175/15Mo3
Size	6.35 mm OD to 101.6 mm OD
Sch. & Swg.	10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg., 3.6 mm Thk
Thickness	3-12mm
Tolerance	Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm
Craft	Cold rolled and Cold drawn
Type	Seamless / ERW / Welded / Fabricated
available in Form of	Round, Square, Rectangular, Hydraulic Etc.
Length	Standard Double & In Cut length also.
End	Plain End, Beveled End, Treaded
Specialized in	ASME SA213 T12 Boiler Tube, SA213 T12 Heater Tube, SA213 T12 Heat Exchanger Tube
SA213 gr T12 Additional Testing	NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc.
SA213 grade T12 Tube Application	Seamless Ferritic Alloy Steel Tube for High-Temperature Service

 

ASTM A213 T12 seamless steel pipes are primarily used in the following applications:

• Boilers and superheaters: In thermal power plants, boilers and superheaters require long-term operation under high temperature and pressure. ASTM A213 seamless steel pipes can withstand extreme conditions, ensuring stable equipment operation.
• Heat exchangers: Heat exchangers in the petrochemical industry require corrosion-resistant and high-temperature-resistant piping materials, and ASTM A213 seamless steel pipes meet these requirements.
• Other high-temperature equipment: Such as oil refining units and chemical reactors, which also rely on the high-temperature performance of this type of steel pipe.

 

 ASTM A213 T12 Tube factory

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