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ASME SA213 T22 Tube Suppliers - Alloy Steel Astm A213 T22 Seamless Tubing, ASME SA213 T22 Boiler Tubes

• Company Name: Neelcon Steel
• Country/Region: India
• FOB Price: US $1500-5000 / Metric Ton
• Port: Nhava Sheva Port Mumbai
• Main Products: Asme Sa213 T22 Boiler Tube, ASME SA213 Seamless Pipes & Tubes, ASME SA213 Welded Pipes & Tubes, Stainless Steel Tube, API 5L Pipes
• No.of Employees: 20 – 40 People
• Year Established: 1998

Certification: ISO 9001:2015

SA-213-T22

Seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes.ASTM A 213 (ASME SA -213 is identical). This specification covers minimum wall thickness seamless austenitic stainless steel tubing intended for high.

A213 / SA 213

Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

Overview 

1.1 This specification covers minimum-wall-thickness, seamless ferritic and austenitic steel, boiler and superheater tubes and austenitic steel heat-exchanger tubes, designated Grades T5, TP304, etc. These steels are listed in the specification (Tables 1-3).

1.2 Grades TP304H, TP309H, TP309HCb, TP310H, TP310HCb, TP310HCbN, TP316H, TP321H, TP347H, TP347HFG (fine grained) and TP348H are modifications of Grades TP304, TP309S, TP309Cb, TP310S, TP310Cb, TP316, TP321, TP347, and TP348, and are intended for high-temperature service, such as for superheaters and reheaters.

1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness. Tubing having other dimensions may be furnished, provided such tubes comply with all other requirements of this specification.

1.4 Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in thickness.

1.5 Optional supplementary requirements are provided and, when desired, shall be so stated in the order.

1.6 The values stated in either inch-pound units or SI units are to be regarded separately as standard. (A combination of values from the two systems may result in nonconformance with the specification.) The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.

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Specification :

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BOILER TUBE GRADES

CARBON STEEL

SA178	Carbon steels show mild corrosion resistance and fair strength up to 1000F. However, their usage above 800F must take into account the susceptibility to graphitization. Graphitization has not been a significant problem in thicknesses encountered in boiler tubing. Use of heavy section pipe above 800F, however, is not recommended. The application of seamless and welded carbon steel tubing in boilers is restricted to a maximum temperature of 800F for rimmed and 1000F for killed steel by the ASME Boiler and Pressure Vessel Code, “Section I, Power Boilers.” The Code does not list maximum allowable stresses beyond 1000F for carbon steels.Carbon-molybdenum steels
CARBON-MOLYBDENUM STEELS
SA209	Carbon-moly steels exhibit higher creep strengths than plain carbon steels, and are widely used in high-temperature boiler service. These steels nominally contain 0.5% molybdenum. When exposed to temperatures above 850-900F for long periods of time, the carbon-moly steels are also prone to graphitization. Again, the phenomenon is section-size dependent, and using pipe of this grade above 850F is not recommended. The carbide phase is not stable, and will revert to graphite. The ASME Boiler and Pressure Vessel Code, “Section I,” lists allowable stresses for carbon-moly steels up to 1000F.
INTERMEDIATE CHROME ALLOYS
SA213-T2	This low alloy steel exhibits graphitization resistance and greater creep strength than the carbon-moly steels. Corrosion resistance is comparable to carbon-moly. T2 has allowable stresses listed up to 1000F in the ASME Boiler Code.
	The chromium in all of the Croloys stabilizes the carbon as chromium carbides, thus making them immune to graphitization.
SA213-T12	This is a 1-chromium, 1/2-molybdenum alloy which is limited to a maximum temperature of 1200F by the ASME Boiler and Pressure Vessel Code, “Section I, Allowable Stresses.” T12 is sometimes used in place of T2 tubing because of its greater strength.
SA213-T11	This grade has the same creep strength properties as T12. It is more corrosion resistant than the chromium-free steels, and is fairly resistant to high-temperature oxidation because of its higher silicon and chromium contents.
	Oxidation resistance is important because metals exposed to elevated temperatures for extended periods of time will accumulate a protective coating of scale. At some minimum temperature, the scale will become non-adherent, gradually flake, and cause solid particle erosion of turbines. However, exfoliation rarely causes failures before creep or high temperature yielding.  Allowable stresses are listed by the ASME Boiler and Pressure Vessel Code to 1200F.
SA213-T22	This 2-1/4 chromium, 1 molybdenum alloy has exceptionally high creep properties, but is limited for applications to 1125F because of possible higher temperature scale exfoliation. It is listed in the ASME Boiler Code for temperatures to 1200F.
SA213-T9	A 9-chromium-1 molybdenum alloy, T9 offers very good corrosion resistance with good high-temperature strength. It also has good oxidation resistance and can be used to 1200F maximum. Some times T9 is an adequate substitute for the more expensive stainless grades. The Boiler Code limits T9 to 1200F.

BOILER TUBE GRADES

STAINLESS STEELS – Austenitic stainless steels
	Austenitic stainless steels are presented in the ASME Boiler and Pressure Vessel Code with two sets of allowable stresses. The reason for this is their relatively low yield strength. The higher allowable stress values were determined at temperatures where the usage would be restricted by the short-time tensile properties. The higher stresses exceed 62-1/2%, but do not exceed 90% of the yield strength. At these stresses, small amounts of plastic deformation can be expected. These higher stress values are usually used for super-heater and reheater tubing.
	The Boiler Code lists maximum allowable stresses for varying temperatures depending on the individual austenitic stainless grade.
SA213-T304	Variations of this 18 chromium, 8 nickel grade include 304L, 304LN, 304H and 304N. Each of these offers excellent corrosion and oxidation resistance along with high strength.
	High strengths are maintained in the low carbon grades by controlling the nitrogen content.
	T304 has higher carbon and a minimum solution annealing temperature to assure good long-time elevated temperature strengths. T304 grades are limited to 1650F under oxidizing conditions. Section I of the ASME Boiler Code lists allowable stresses up to 1500F.
SA213-T316	T316 is similar to T304, but offers better corrosion resistance and creep strength. The molybdenum addition to 316 increases its resistance to pitting and crevice corrosion. Variations of this grade include 316L, 316LN, 316H and 316N.
SA213-T321 and T347	T321 and 347 are variations of T304 and have comparable minimum tensile properties. These two grades are stabilized with additions of titanium and columbian respectively, along with proper heat treatment. To insure good long-time strength at elevated temperatures, T321H and 347H-like 304H-were developed with higher carbon contents and specified minimum solution annealing temperatures.
	Of all the stainless steels, T309 (25 chromium, 13 nickel) and T310 (25 chromium, 20 nickel) offer the maximum resistance to oxidation and corrosion. They also offer good high-temperature properties. Since these steels contain ferrite, however, they are more susceptible to sigma phase.

Every type of steel tube and pipe can be manufactured. A power generation boiler consists of an economizer, a furnace（evapo- rator）, a superheater tube, a reheater tube, a main steam pipe, a reheat pipe, a water feed pipe, and a feed water heater tube. We manufacture various carbon steel, alloy steel, and stainless steel tubes and pipes to suit the usage conditions of these pieces of equip- ment. In addition to JIS standard products, we also manufacture foreign standard products such as ASME（ASTM）, EN, and DIN, along with our own proprietary special products.

Boiler tubes and pipes require extremely superior quality and a variety of steel grades and dimensions suited to usage situations. To fully meet these requirements, our boiler tubes and pipes have emerged from a secure system through years of experi- ence and foremost engineering prowess, as a backdrop. They are manufactured based on an integrated production system and on strict quality design and quality control, ranging from raw materials to final products. In line with diversifying needs, we are developing new materials and products, and are conducting a wide variety of research and development, including manufacturing process research. Thus, our boiler tubes and pipes that have a superior track record and receive a high level of trust, all based on three mainstays : Integrated production, quality assurance, and research and devel- opment.

Our boiler tubes and pipes are consistently controlled, from steel-making to tube and pipe-making, in order to ensure the manufacturing of all steel grades, as well as to assure uniform and stable quality, through strict quality control during each process. Particularly, steel-making processes, from component mixture to final heat treatment, undergo optimum quality design regarding boiler steel tubes and pipes, by putting years of experience and high engineering prowess to full use so that products can endure long usage periods of one or two decades. In order to bring the quality design into shape, a new refining method in steel-making is introduced and various manufacturing processes are selected according to dimensions, material properties, and internal and external surface accuracy. Seamless steel tubes and pipes are hot manufactured using

the plug mill-rolling process, mandrel mill-rolling process, extrusion process, and push bench process. The plug mill-rolling process is used to manufacture medium-diameter carbon steel tubes and low-alloy steel tubes, and the mandrel mill-rolling process is used to manu- facture small-diameter carbon steel tubes and low-alloy steel tubes. The extrusion process is used to manufacture high- alloy steel tubes, such as stainless steel, and special tubes, such as finned tubes. The push bench process is suited for manufacturing large-diameter, thick-wall tubes, and enables the manufacturing of carbon steel, alloy steel, and stainless steel tubes and pipes.
These hot manufactured tubes are cold finished using cold-drawing and cold-rolling processes that fit the applica- tions and thermal treatments.

ASTM A213 / ASME SA213 T2, T11, T12, T22, T91, T92 Chemical Composition and Mechanical Properties :

Grade	A213 / SA213 Chemical Composition%
	C	Si	Mn	P, S Max	Cr	Mo	Ni Max	V	Al Max
T2	0.10~0.20	0.10~0.30	0.30~0.61	0.025	0.50~0.81	0.44~0.65	–	–	–
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	–	–	–
T22	0.05~0.15	Max 0.5	0.30~0.60	0.025	1.90~2.60	0.87~1.13	–	–	–
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
T92	0.07~0.13	Max 0.5	0.30~0.60	0.02	8.5~9.5	0.30~0.60	0.4	0.15~0.25	0.015
Grade	A213 / SA213 Chemical Composition%				Mechanical Properties
	W	B	Nb	N	T. S	Y. P	Elongation	A213 / SA213 Hardness
T2	–	–	–	–	≥ 415MPa	≥ 205MPa	≥ 30%	163HBW(85HRB)
T11	–	–	–	–	≥ 415MPa	≥ 205MPa	≥ 30%	163HBW(85HRB)
T12	–	–	–	–	≥ 415MPa	≥ 220MPa	≥ 30%	163HBW(85HRB)
T22	–	–	–	–	≥ 415MPa	≥ 205MPa	≥ 30%	163HBW(85HRB)
T91	–	–	0.06~0.10	0.03~0.07	≥ 585MPa	≥ 415MPa	≥ 20%	250HBW(25HRB)
T92	1.50~2.00	0.001~0.006	0.04~0.09	0.03~0.07	≥ 620MPa	≥ 440MPa	≥ 20%	250HBW(25HRB)

ASTM A213 / ASME SA213 T2, T11, T12, T22, T91, T92 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 A 213 Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes :

Trade Name	A213 / SA213 Grade	A213 / SA213 UNS #	A213 / SA213 Heater Tubes
1 1/4 Chrome	T11	K11597	A213 / SA213
2 1/4 Chrome	T22	K21590	A213 / SA213
5 Chrome	T5	K41545	A213 / SA213
9 Chrome	T9	K90941	A213 / SA213
T91	T91	K90901	A213 / SA213
T92	T92	K92460	A213 / SA213

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