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Low-Carbon Steel Rectangular Tubes
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Tubes
- Yield Strength: See table
- Hardness: Not Rated
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
- Specifications Met: See table
Outside | Inside | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ht. | Ht. Tolerance | Wd. | Wd. Tolerance | Ht. | Wd. | Yield Strength, psi  | Specifications Met | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
1/8" Wall Thick. (-0.013" to 0.013" Tolerance) | |||||||||||
| 1" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 3/4" | 2 3/4" | 46,000 | ASTM A500 | 0000000 | |||
| 1 1/2" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 1 1/4" | 2 3/4" | 46,000 | ASTM A500 | 0000000 | |||
0.188" Wall Thick. (-0.019" to 0.019" Tolerance) | |||||||||||
| 1 1/4" | -0.02" to 0.02" | 1 1/4" | -0.02" to 0.02" | 0.874" | 0.874" | 46,000 | ASTM A500 | 0000000 | |||
| 1 1/2" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 1.124" | 2.624" | 46,000 | ASTM A500 | 0000000 | |||
| 2 1/2" | -0.02" to 0.02" | 2 1/2" | -0.02" to 0.02" | 2.124" | 2.124" | 46,000 | ASTM A500 | 0000000 | |||
1/4" Wall Thick. (-0.025" to 0.025" Tolerance) | |||||||||||
| 1 1/2" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 1" | 2 1/2" | 46,000 | ASTM A500 | 0000000 | |||
| 2 1/2" | -0.02" to 0.02" | 2 1/2" | -0.02" to 0.02" | 2" | 2" | 46,000 | ASTM A500 | 0000000 | |||