ASTM A210/ASME SA210 standard specification for seamless medium-carbon steel boiler and superheater tubes. Seamless medium carbon steel pipe for boiler tube and boiler flue pipe, including a minimum wall thickness of the security side, the dome and the support tube and superheater tubes.

Scope of ASTM A210

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 This specification covers grades A-1 and C of Seamless Medium-Carbon Boiler and Superheater Tubes with different chemical and tensile requirements. (Table 1, Table 3, and Section 11.)

1.5 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.

1.6 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.

Chemical composition(%) of ASTM A210

Grade	C(Max)	Mn	Si(Min)	P(Max)	S(Max)
A1	0.27	Max.0.93	0.1	0.035	0.035
C	0.35	0.29~1.06	0.1	0.035	0.035

Mechanical properties of ASTM A210

Grade	Tensile Strength(Mpa)	Yield Strength(Mpa)	Elongation (%)
A1	≥ 415	≥ 255	≥ 30
C	≥ 485	≥ 275	≥ 30

The properties of ASTM A210 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare ASTM A210 steel to: wrought carbon or non-alloy steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

ASTM A210 Grade A-1 Medium-Carbon Steel

ASTM A210 grade A-1 is a type of ASTM A210 steel. The graph bars on the material properties cards below compare ASTM A210 grade A-1 to: wrought carbon or non-alloy steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it’s 50% of the highest, and so on.

ASTM A210 Grade C Medium-Carbon Steel

ASTM A210 grade C is a type of ASTM A210 steel. The graph bars on the material properties cards below compare ASTM A210 grade C to: wrought carbon or non-alloy steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it’s 50% of the highest, and so on.

Flattening Test of ASTM A210 tube

One flattening test shall be made on specimens from each end of one finished tube from each lot, but not the one used for the flaring test. Tears or breaks occurring at the 12 or 6 o’clock positions on Grade C tubing with sizes of 2.375 in. [60.3 mm] in outside diameter and smaller shall not be considered a basis for rejection.

ASTM A210 seamless medium carbon steel boiler and superheater tubes

Ordering Information

Orders for ASTM A210 / A210M, ASME SA210 should include the following, as required, to describe the desired material adequately:

Quantity (feet, meters, or number of lengths),
Name of material (seamless tubes),
Grade,
Manufacture (hot-finished or cold-finished),
Size (outside diameter and minimum wall thickness),
Length (specific or random),
Optional requirements,
Test report required (see section on Certification of Specification A 450/A 450M),
Specification designation,
Special requirements.

When these products are to be used in applications conforming to ISO Recommendations for Boiler Construction, the requirements of Specification ASTM A 520 , shall supplement and supersede the requirements of this specification.

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 value 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.

aSTM a210 equivalent

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 210 - Seamless Medium-Carbon Steel Boiler and Superheater Tubea

ASTMSTANDARD	UNS NO.	KOREA/JAPANES			GERMAN				BRITISH			BELGIAN			FRENCH			ITALIAN
		KS/JIS Symbol	KS/JIS Numbe	Remarks	DIN Type	DIN Number	Materiral Number	Remarks	B.S Number	B.S Grade	Remarks	NBN Type	NBN Grade	Remarks	AFNOR Type	NF Number	Ramarks	UNI Type	UNI Number	Ramarks
Grade A-1	K02707	STHA 410 / STB 410	D3563 / G3461	(30)(24)	St 45.8	17175	1.0405		3059	320	-30	D45	837	-13	TU A42-C	A49-213	(6)(13)	C 18	5462	-38