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ASTM A210 / A210M and ASME SA210 / SA210M Grade A1 is the standard applicable to seamless medium-carbon steel boiler and superheater tubes.
Super Steel Manufacturing Co.,Ltd is professional ASTM A210 ASME SA210 Grade A1 seamless tubes manufacturer, for more details, please contact:sales@super-steels.com
Specifications of ASTM A210 / ASME SA210 Grade A1 Seamless Tubes
Standard: ASTM A210 / ASME SA210
Description: ASME SA210 / ASTM A210 boiler pipes, A210 pipes, A210 carbon steel tube, ASTM A210 seamless tubing, ASTM A210 carbon steel pipe, SA210 seamless pipe, ASTM A210 cold drawn seamless steel tubes, ASTM A210 pipes and tubing, carbon steel tube, seamless steel tube, steel tube.
Size Range: 1/2 inch to 16 inches (12.7mm - 406.4mm)
Wall Thickness: 1.5mm - 50mm
Shape: Round
Production Type: Hot-finished and cold-finished
Length: Single random length, double random length, or as per customer’s requirements, with a maximum length of 25m
Grade: Grade A1
Heat Treatment: Hot-finished tubes need not be heat treated. Cold-finished tubes shall be given a subcritical anneal, full anneal, or normalizing heat treatment after the final cold finishing process.
ASTM A210 / A210M Grade A-1 Chemical Compositions
|
Chemical Components (%) |
||||||||
|
Grade |
C |
Si |
Mn |
P |
S |
Mo |
Cr |
V |
|
A-1 |
≤0.27 |
≥0.10 |
≤0.93 |
≤0.035 |
≤0.035 |
/ |
/ |
/ |
ASTM A210 / A210M Mechanical Tests Required
|
Mechanical Properties |
||||
|
Grade |
Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation (%) |
Hardness (HRB) |
|
A-1 |
≥415 |
≥255 |
≥30 |
≤79 |
ASTM A210 / A210M Tube Wall Thickness Tolerance
|
Seamless, Cold-Finished Tubes |
||
|
Outside Diameter In. (mm) |
Wall thickness Tolerance % |
|
|
Over (+) |
Under (-) |
|
|
1 ½ (38.1) and under |
20 |
0 |
|
Over 1½ (38.1) |
22 |
0 |
ASTM A210 / A210M Tube Outside Diameter Tolerance
|
Cold-Finished Seamless Tubes |
||
|
Outside Diameter In. (mm) |
Permissible Variations In. (mm) |
|
|
Over (+) |
Under (-) |
|
|
Under 1 (25.4) |
0.004 (0.10) |
0.004 (0.10) |
|
1 to 1 ½ (25.4 to 38.1), Incl |
0.006 (0.15) |
0.006 (0.15) |
|
Over 11⁄2 to 2 (38.1 to 50.8), Excl |
0.008 (0.20) |
0.008 (0.20) |
|
2 to 21⁄2 (50.8 to 63.5), Excl |
0.010 (0.25) |
0.010 (0.25) |
|
21⁄2 to 3 (63.5 to 76.2), Excl |
0.012 (0.30) |
0.012 (0.30) |
ASTM A210 / A210M Tube Cut Length Tolerance
|
Cold-Finished Seamless Tubes |
||
|
Outside Diameter, |
Cut Length, in.(mm) |
|
|
Over (+) |
Under (-) |
|
|
All Sizes |
3⁄16 [5] |
0 [0] |
|
Under 2 (50.8) |
1⁄8 [3] |
0 [0] |
|
2 (50.8) and over |
3⁄16 [5] |
0 [0] |
|
Under 2 (50.8) |
1⁄8 [3] |
0 [0] |
|
2 (50.8) and over |
3⁄16 [5] |
0 [0] |
|
These permissible variations in length apply to tubes before bending. They apply to cut lengths up to and including 24 ft [7.3 m]. For lengths greater than 24 ft [7.3 m], the above over-tolerances shall be increased by 1⁄8 in. [3 mm] for each 10 ft [3 m] or fraction thereof over 24 ft or 1⁄2 in. [13 mm], whichever is the lesser. |
||
ASTM A210 / A210M Tube Hydrostatic Test Pressures
Each tube shall be subjected to the hydrostatic pressure test, or instead of this test, a nondestructive test may be used when specified by the purchaser.
|
Hydrostatic Test Pressures |
|
|
Outside Diameter of Tube, in. [mm] |
Hydrostatic Test Pressure, psi [MPa] |
|
Under 1 [25.4] |
1000 [7] |
|
1 to 11⁄2 [25.4 to 38.1], excl |
1500 [10] |
|
11⁄2 to 2 [38.1 to 50.8], excl |
2000 [14] |
|
2 to 3 [50.8 to 76.2], excl |
2500 [17] |
ASTM A210 / A210M Flattening Test
A flattening test shall be conducted on specimens taken from each end of one finished tube per lot, excluding the tube used for the flaring test. For Grade C tubing with an outside diameter of 2.375 inches [60.3 mm] or smaller, tears or breaks occurring at the 12 or 6 o’clock positions shall not be grounds for rejection.
ASTM A210 / A210M Flaring Test
A flaring test shall be performed on specimens taken from each end of one finished tube per lot, excluding the tube used for the flattening test.
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