November 27, 2023
Chemical Composition Of ASTM A210 Grade A1
Standard | Grade | chemical composition: | ||||
C(a) | Si | Mn | P | S | ||
ASTM A210 | A-1 | ≤0.27 | ≥0.10 | ≤0.93 | ≤0.035 | ≤0.035 |
Mechanical Properties Of ASTM A210 Grade A1
Mechanical Properties | Grade A-1 |
Tensile strength, min, ksi [MPa] | 60 [415] |
Yield strength, min, ksi [MPa] | 37 [255] |
Elongation % | 30 |
HRB | 79 |
HB | 143 |
Note:Mechanical property requirements do not apply to tubing smaller than 1/8 in.
Tolerances of Wall Thickness
Outside Diameter, in. [mm] |
Wall Thickness, % | |||||||
0.095[2.4] and Under | Over 0.095 to 0.150 [2.4 to 3.8], incl |
Over 0.150 to 0.180 [3.8 to 4.6], incl |
Over 0.180,[4.6] | |||||
Over | Under | Over | Under | Over | Under | Over | Under | |
Seamless, Hot-Finished Tubes | ||||||||
4 [101.6] and under | 40 | 0 | 35 | 0 | 33 | 0 | 28 | 0 |
Over4 [101.6] | .... | .... | 35 | 0 | 33 | 0 | 28 | 0 |
Seamless, Cold-Finished Tubes | ||||||||
Over | Under | |||||||
1 1 ⁄ 2 [38.1] and under | 20 | 0 | ||||||
Over 1 1 ⁄ 2 [38.1] | 22 | 0 |
Tolerances of Outside Diameter
Outside Diameter,in. [mm] | Permissible Variations, in. [mm] | |
Over | Under | |
Hot-Finished Seamless Tubes | ||
4 [101.6] and under | 1 ⁄ 64 [0.4] | 1 ⁄ 32 [0.8] |
Over 4 to 7 1 ⁄ 2 [101.6 to 190.5], incl | 1 ⁄ 64 [0.4] | 3 ⁄ 64 [1.2] |
Over 7 1 ⁄ 2 to 9 [190.5 to 228.6], incl | 1 ⁄ 64 [0.4] | 1 ⁄ 16 [1.6] |
Cold-Finished Seamless Tubes | ||
Under 1 [25.4] | 0.004 [0.1] | 0.004 [0.1] |
1 to 1 1 ⁄ 2 [25.4 to 38.1], incl | 0.006 [0.15] | 0.006 [0.15] |
Over 1 1 ⁄ 2 to 2 [38.1 to 50.8], excl | 0.008 [0.2] | 0.008 [0.2] |
2 to 2 1 ⁄ 2 [50.8 to 63.5], excl | 0.010 [0.25] | 0.010 [0.25] |
2 1 ⁄ 2 to 3 [63.5 to 76.2], excl | 0.012 [0.3] | 0.012 [0.3] |
3 to 4 [76.2 to 101.6], incl | 0.015 [0.38] | 0.015 [0.38] |
Over 4 to 7 1 ⁄ 2 [101.6 to 190.5], incl | 0.015 [0.38] | 0.025 [0.64] |
Over 7 1 ⁄ 2 to 9 [190.5 to 228.6], incl | 0.015 [0.38] | 0.045 [1.14] |
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