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.

standard:ASTM

Surface :1. Galvanized 2. Black and Color Painting

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introduction

ASTM A213 T91, T12, T11 alloy pipe is a ferritic and austenitic alloy steel seamless steel pipe used in boilers, superheaters and heat exchangers.
T91 alloy boiler tubes are mainly used for heating surface tubes of low and medium pressure boilers (working pressure is generally not greater than 5.88Mpa, working temperature is below 450℃); used in high-pressure boilers (working pressure is generally above 9.8Mpa, working temperature is below 450℃ ~650℃ heating surface pipes, economizers, superheaters, reheaters, petrochemical industry pipes, etc.

Technical Data

ASTM A213/ASME SA213 pipe Chemical Composition and Mechanical Properties

Grade	Chemical Composition%
Grade	C	Si	Mn	P, S Max	Cr	Mo	Ni Max	V	Al Max
T11	0.05~0.15	0.50~1.00	0.30~0.60	0.025	1.00~1.50	0.44~0.65	-	-	-
T12	0.05~0.15	Max 0.5	0.30~0.61	0.025	0.80~1.25	0.44~0.65	-	-	-
T91	0.07~0.14	0.20~0.50	0.30~0.60	0.02	8.0~9.5	0.85~1.05	0.4	0.18~0.25	0.015
Grade	Chemical Composition%				Mechanical Properties
Grade	W	B	Nb	N	T. S	Y. P	Elongation	Hardness
T11	-	-	-	-	≥ 415MPa	≥ 205MPa	≥ 30%	163HBW(85HRB)
T12	-	-	-	-	≥ 415MPa	≥ 220MPa	≥ 30%	163HBW(85HRB)
T91	-	-	0.06~0.10	0.03~0.07	≥ 585MPa	≥ 415MPa	≥ 20%	250HBW(25HRB)

ASME SA213 Alloy Steel Seamless Tube Dimensions 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

company advantage

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FAQ

1.Q.What's your advantage?
A.Honest business with competitive price and professional service on export process.

2. Q: What services do you provide?
A: Customized service for each customer, please feel free to contact us!

3.Q.Do you have quality control?
A.Yes, we have got BV.SGS certification.