ASTMA210 Seamless Medium Carbon Steel Boiler and Superheater Tubes

A210Standard Specification for Seamless Medium-Carbon Steel Boiler and SuperheaterTubes 
Scope * 
1.1 This specification2 covers minimum-wall-thickness,seamless medium-carbon steel, boiler tubes and boiler flues,including safe ends (see Note 1), arch and stay tubes, and superheater tubes. 
NOTE 1—This type is not suitable for safe ending by forge welding. 
1.2 The tubing sizes and thicknesses usually furnished to this specification are 1⁄2 in. to 5 in. [12.7 to 127 mm] in outside diameter and 0.035 to 0.500 in. [0.9 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. 
1.3 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. 
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated 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. 

2. Referenced Documents 
2.1 ASTM Standards:
A 450/A 450M Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes3 

3. Ordering Information 
3.1 Orders for material under this specification should include the following, as required, to describe the desired material adequately: 
3.1.1 Quantity (feet, metres, or number of lengths), 
3.1.2 Name of material (seamless tubes), 
3.1.3 Grade, 
3.1.4 Manufacture (hot-finished or cold-finished), 
3.1.5 Size (outside diameter and minimum wall thickness), 
3.1.6 Length (specific or random), 
3.1.7 Optional requirements (Sections 7 and 10), 
3.1.8 Test report required, (see Certification Section of Specification A 450/A 450M), 
3.1.9 Specification designation, and 
3.1.10 Special requirements. 

4. General Requirements 
4.1 Material furnished under this specification shall conform to the applicable requirements of the current edition of Specification A 450/A 450M, unless otherwise provided herein. 

5. Manufacture 
5.1 Steelmaking Practice—The steel shall be killed. 
5.2 The tubes shall be made by the seamless process and shall be either hot-finished or cold-finished, as specified. 

6. Heat Treatment 
6.1 Hot-finished tubes need not be heat treated. Coldfinished tubes shall be given a subcritical anneal, a full anneal, or a normalizing heat treatment after the final cold finishing process. 

7. Surface Condition 
7.1 If pickling or shot blasting or both are required, this shall be specifically stated in the order.

1, Chemical composition:

2, Mechanical Properties:

3, Permissible Variations in Wall Thickness A

A, These permissible variations in wall thickness apply only to tubes, except internal-upset tubes, as rolled or cold-finished, and before swaging, expanding, bending, polishing, or other fabricating operations.

4, Permissible Variations in Outside Diameter A

5, Hydrostatic Test Pressures

6, Straightness Tolerances

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