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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Low-Carbon Steel Round 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.
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Tubes
- Yield Strength: See table
- Hardness: See table
- Heat Treatable: See table
- Specifcations Met: See table
| OD | OD Tolerance | ID | Yield Strength, psi  | Heat Treatable | Heat Treatment | Hardness | Specifications Met | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
0.12" Wall Thick. (Oversized Tolerance) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" | 0" to 0.005" | 0.26" | 75,000 | No | __ | Rockwell B85 (Medium) | ASTM A513 Type 5 | 0000000 | |||
0.188" Wall Thick. (Oversized Tolerance) | |||||||||||
| 3/4" | 0" to 0.005" | 3/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1" | 0" to 0.005" | 5/8" | 45,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 1/8" | 0" to 0.005" | 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 1/4" | 0" to 0.005" | 7/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 3/8" | 0" to 0.005" | 1" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 1/2" | 0" to 0.005" | 1 1/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 5/8" | 0" to 0.005" | 1 1/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 3/4" | 0" to 0.006" | 1 3/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2" | 0" to 0.006" | 1 5/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2 1/2" | 0" to 0.008" | 2 1/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 3" | 0" to 0.009" | 2 5/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 3 1/8" | 0" to 0.009" | 2 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
1/4" Wall Thick. (Oversized Tolerance) | |||||||||||
| 1" | 0" to 0.005" | 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 1/8" | 0" to 0.005" | 5/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 1/4" | 0" to 0.005" | 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 3/8" | 0" to 0.005" | 7/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 1/2" | 0" to 0.005" | 1" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 3/4" | 0" to 0.006" | 1 1/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2" | 0" to 0.006" | 1 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2 1/2" | 0" to 0.008" | 2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 3" | 0" to 0.009" | 2 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 3 1/2" | 0" to 0.01" | 3" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 4" | 0" to 0.011" | 3 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
3/8" Wall Thick. (Oversized Tolerance) | |||||||||||
| 1 1/2" | 0" to 0.005" | 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 1 3/4" | 0" to 0.006" | 1" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2" | 0" to 0.006" | 1 1/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2 1/4" | 0" to 0.007" | 1 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2 1/2" | 0" to 0.008" | 1 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
1/2" Wall Thick. (Oversized Tolerance) | |||||||||||
| 1 1/2" | 0" to 0.005" | 1/2" | 65,000 | No | __ | Rockwell B86 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2" | 0" to 0.005" | 1" | 75,000 | No | __ | Rockwell B85 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 2 3/4" | 0" to 0.008" | 1 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 3" | 0" to 0.009" | 2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 3 1/2" | 0" to 0.01" | 2 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 4" | 0" to 0.011" | 3" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||
| 5 1/2" | 0" to 0.015" | 4 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||