ASTM A556 Superheater Steel Tube

ASTM A556 steel tubes are primarily used in high-temperature heater systems, including feedwater heaters and superheaters.

These tubes are designed to withstand elevated temperatures and provide efficient heat transfer.

ASTM A556 Superheater Steel Tube

ASTM A556 is available in different grades, such as Grade A2, Grade B2, and Grade C2. The specific grade depends on the requirements of the application and the desired mechanical properties. ASTM A556 steel tubes can be sourced from various manufacturers and suppliers. It's important to ensure that the tubes meet the requirements of the ASTM A556 specification and any additional project specifications. ASTM A556 steel pipe is mainly for high-temperature heater systems. World iron&steel manufactures and offers ASTM A556 Grade C2 seamless U-bent steel tubes.

U bend ASTM A556 feedwater heater tubes

U bend ASTM A556 feedwater heater tubes

U bend ASTM A556 feedwater heater tubes

ASTM A556 steel tubes can be delivered in the form of U-bend tubes for feedwater heater applications. The U-bend configuration allows for efficient heat transfer and is commonly used in tubular feedwater heaters. The ASTM A556 specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes for these purposes.

ASTM A556 superheater steel tube heat exchanger

ASTM A556 superheater steel tube heat exchanger

Scope

1.1 This specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the from of u-tubes, if specified, for use in tubular feedwater heaters.

1.2 The tubing sizes covered shall be 5/8 to 1 2/4-in. [15.9 to 31.8-mm] outside diameter, inclusive, with minimum wall thicknesses equal to or greater than 0.045 in. [1.1 mm].

1.3 optional supplementary requirements are provided, and hen desired, shall be stated in the order.

1.4 The values stared in either inch-pound units or SI units are to be regarded separately as the standard. within the text, the SI units are shown in brackets. The values sated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining 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.

Chemical Components (%) of ASTM A556

Grade C % Si % Mn % P % S %
A2 0.18 ... 0.27–0.63 0.035 0.035
B2 0.27 max 0.10 min 0.29-0.93 0.030 max 0.030 max
C2 0.30 max 0.10 min 0.29-1.06 0.030 max 0.030 max

All Mechanical Properties Tensile Requirements and Hardness of ASTM A556

Grade Tensile strength, min, ksi [MPa] Yield strength, min, ksi [MPa] Elongation in 2 in. or 50 mm, min, % (longitudinal) Hardness Requirements
A2 47 [320] 26 [180] 35 HR B 72
B2 60 [410] 37 [260] 30 HR B 79
C2 70 [480] 40 [280] 30 HR B 89

Tolerances:

Tolerances according to specification or according to agreement. Standard tolerances are:

Processing methods OD WT
Hot finished +/- 1% +/-12.5%
Cold finished +/-0.75% +/-10%

JIS Number and Corrensponding Foreign Standards

Tolerances according to specification or according to agreement. Standard tolerances are:

JIS ASTM BS DIN NF ISO Index Number
Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe
G3461 STB340 C A161 LC C 3059 HFS320 C A49-245 TS34e C C010
(STB35) A192 - C " CFS320 C " TS34c C
A226 - C " ERW320 C
A556 GrA2 C " CEW320 C
A557 GrA2 C " S1 360 C
" S2 360 C
" ERW 360 C
" CEW360 C
3606 ERW320 C
" CEW320 C
" CFS320 C
STB410 C A179 GrC C 3059 S1 440 C 17175 St45.8 C A49-213 TU42c C 2604/2 TS9H C
(STB42) A210 GrA1 C " S2 440 C 17177 St42.8 C A49-215 TU42c C " TW9H C
A556 GrB2 C " ERW 440 C A49-243 TS42c
A557 GrB2 C " CEW 440 C A49-245 TS42c
3602 HFS 410 C " TS42c
" CFS 410 C
" ERW 410 C
" CEW 410 C
3606 ERW 440 C
" CEW 440 C
" CFS 440 C
STB510 C C 17175 19Mn5 C A49-213 TU52C C 2604/2 TS18 C
(STB52) C A49-248 TU52C C

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Seamless tube processing

With years of expertise, we provide a diverse array of steel tube processing options. From sawing and machining tube blanks to intricate bending and upsetting operations, we actively assist you throughout your projects.

Our capabilities extend to eccentricity reduction and concentricity enhancement through turning and grinding. We excel in creating complex geometries using processes like rotary swaging and axial forming. Additionally, we offer property modifications via partial heat treatment, ensuring tailored solutions for your specific needs.

Variable wall thicknesses

Variable wall thicknesses

Drilling / stamping / lasering

Drilling / stamping / lasering

Peeling / roller burnishing

Peeling / roller burnishing

Cold forming

Cold forming

Cutting

Cutting

Beveling

Beveling

Deburring

Deburring

Thread rolling / threading

Thread rolling / threading

Partial hardening

Partial hardening

Turning / milling / grinding

Turning / milling / grinding

Reducing / expanding

Reducing / expanding

Machining

Machining

application

Application

Alloy steel pipes are ideally suitable for chemical, petrochemicals, and other energy-related applications.

The alloy steel pipe adopts high quality carbon steel, alloy structural steel and stainless & heat resisting steel as raw material through hot rolling or cold drawn to be made.

Alloy steel can be used in process area where carbon steel has limitation such as

As an important element of steel products, alloy steel pipe can be divided into seamless steel pipe and welded steel pipe according to the manufacturing technique and tube billet shape.

Here you can see the common alloy steel grade that you will come across.

Why the application of alloy steel pipe is wider than others

There are many kinds of materials used for transport in industrial production. Specifically we will have more choices and it is not limited to the use of alloy steel pipe. But even in the face of more choices, many people tend to choose alloy steel pipe. People make their own choices will have their own reasons. This means the alloy steel pipe application has its own advantages. Compared with transmission lines made of other materials, after it meets the basic application requirements, its quantity is lighter. Then in the practical application of alloy steel pipe, it will have more advantages because of this. Besides its physical characteristic advantage, it also has economic advantages. The wide application of alloy steel pipe is with kinds of reasons. So in practical usage, we can exploit the advantages to the full, in this way can we get more profits in these applications of alloy steel pipe.

What requirements should alloy steel pipe application meet

The transportation of kinds of gases or liquids in production needs to rely on alloy steel pipe. This shows that the actual role of alloy steel pipe application is important. High temperature resistant and low temperature resistant is the tolerance of temperature. In the practical application of alloy steel pipe, there will be many materials need to be transported. However their temperatures are not the same. So this can be the basic requirement to alloy steel pipe. It needs more corrosion resistance. Corrosion resistant material is the best material during transporting, because it is corrosion resistant. So it can be used in more occasions. And it is definitely very convenient for users.

The biggest advantages of alloy steel pipe

Can be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy steel pipe total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy steel pipe to provide a wider space for the development of the industry. The future needs of the average annual growth of China’s high-pressure alloy steel pipe long products up to 10-12%.

Specification, standard and identification of alloy steel pipes

Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.

Industries We Serve

Our team of experienced sales specialists proudly partners with gas and chemical processors, power generation plants, oil refineries, and related industries to offer piping components and value-added services.

The biggest advantages of alloy steel pipe can be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy tube total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy tube to provide a wider space for the development of the industry. According to the Chinese Special Steel Association alloy pipe Branch Expert Group, the future needs of the average annual growth of China’s high-pressure alloy pipe long products up to 10-12%.

Alloying Elements

Commonly used alloying elements and their effects are listed in the table given below.

Alloying Elements Effect on the Properties
Chromium Increases Resistance to corrosion   and oxidation. Increases hardenability and wear resistance. Increases high   temperature strength.
Nickel Increases hardenability. Improves   toughness. Increases impact strength at low temperatures.
Molybdenum Increases hardenability, high   temperature hardness, and wear resistance. Enhances the effects of other   alloying elements. Eliminate temper brittleness in steels. Increases high   temperature strength.
Manganese Increases hardenability. Combines   with sulfur to reduce its adverse effects.
Vanadium Increases hardenability, high   temperature hardness, and wear resistance. Improves fatigue resistance.
Titanium Strongest carbide former. Added to   stainless steel to prevent precipitation of chromium carbide.
Silicon Removes oxygen in steel making.   Improves toughness. Increases hardness ability
Boron Increases hardenability. Produces   fine grain size.
Aluminum Forms nitride in nitriding steels.   Produces fine grain size in casting. Removes oxygen in steel melting.
Cobalt Increases heat and wear   resistance.
Tungsten Increases hardness at elevated   temperatures. Refines grain size.

【H】 Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

【H】 Cast basalt lined steel pipe

Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.

【H】 Ceramic Tile Lined Pipes

Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.

【H】 Rare earth alloy wear-resistant pipe

The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.

【H】 Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.

【H】 ASTM A213 T91 Alloy Tube

The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.

Ni-Hard Wearback Pipes Ni-Hard Wearback Pipes
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