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Easy-to-Weld 4130 Alloy Steel Round Tubes
- Yield Strength: See table
- Hardness: See table
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: See table
- Specifications Met: See table
4130 alloy steel has a low carbon content that provides good weldability. It's often used for gears, fasteners, and structural applications. These tubes meet military specifications and SAE dimensional standards.
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.
| OD | OD Tolerance | ID | Yield Strength  | Hardness | Maximum Hardness After Heat Treatment | Specifications Met | Straightness Tolerance | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
0.028" Wall Thick. (-0.004" to 0.004" Tolerance) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4" | -0.005" to 0.005" | 0.194" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.319" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.444" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.569" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.694" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.944" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.035" Wall Thick. (-0.005" to 0.005" Tolerance) | |||||||||||
| 3/16" | -0.005" to 0.005" | 0.118" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/4" | -0.005" to 0.005" | 0.18" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/16" | -0.005" to 0.005" | 0.243" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.305" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.43" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.555" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.68" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.805" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.93" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 1.055" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 1.18" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/8" | -0.005" to 0.005" | 1.305" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.013" to 0.013" | 1.43" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.049" Wall Thick. (-0.007" to 0.007" Tolerance) | |||||||||||
| 1/4" | -0.005" to 0.005" | 0.152" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/16" | -0.005" to 0.005" | 0.215" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.277" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.34" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.402" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.527" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.652" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.777" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.902" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 1.027" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 1.152" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/8" | -0.005" to 0.005" | 1.277" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.005" to 0.005" | 1.402" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/4" | -0.019" to 0.019" | 1.652" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.020" to 0.020" | 1.902" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.058" Wall Thick. (-0.009" to 0.009" Tolerance) | |||||||||||
| 3/8" | -0.005" to 0.005" | 0.259" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.322" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.384" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.509" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.634" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.759" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.884" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 1.009" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 1.134" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/8" | -0.005" to 0.005" | 1.259" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.005" to 0.005" | 1.384" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/4" | -0.010" to 0.010" | 1.634" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.065" Wall Thick. (-0.01" to 0.01" Tolerance) | |||||||||||
| 1/4" | -0.005" to 0.005" | 0.12" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/16" | -0.005" to 0.005" | 0.183" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.245" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.308" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.37" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 9/16" | -0.005" to 0.005" | 0.433" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.495" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.62" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.745" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.87" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 0.995" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 1.12" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/8" | -0.005" to 0.005" | 1.245" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.005" to 0.005" | 1.37" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 5/8" | -0.010" to 0.010" | 1.495" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/4" | -0.010" to 0.010" | 1.62" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.87" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.083" Wall Thick. (-0.012" to 0.012" Tolerance) | |||||||||||
| 3/8" | -0.005" to 0.005" | 0.209" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.272" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.334" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 9/16" | -0.005" to 0.005" | 0.397" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.459" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.584" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.709" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.834" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 0.959" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 1.084" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/8" | -0.005" to 0.005" | 1.209" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.005" to 0.005" | 1.334" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 5/8" | -0.010" to 0.010" | 1.459" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/4" | -0.010" to 0.010" | 1.584" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.834" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.095" Wall Thick. (-0.014" to 0.014" Tolerance) | |||||||||||
| 5/16" | -0.005" to 0.005" | 0.123" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.248" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.31" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.56" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.81" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 0.935" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 1.06" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/8" | -0.005" to 0.005" | 1.185" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.010" to 0.010" | 1.31" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 5/8" | -0.010" to 0.010" | 1.435" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/4" | -0.010" to 0.010" | 1.56" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.81" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2 1/2" | -0.010" to 0.010" | 2.31" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.12" Wall Thick. (-0.018" to 0.018" Tolerance) | |||||||||||
| 3/8" | -0.005" to 0.005" | 0.135" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.198" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.26" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 9/16" | -0.005" to 0.005" | 0.323" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.385" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.51" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.635" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.76" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 0.885" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 1.01" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/8" | -0.005" to 0.005" | 1.135" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.005" to 0.005" | 1.26" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 3/4" | -0.010" to 0.010" | 1.51" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.76" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2 1/4" | -0.010" to 0.010" | 2.01" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2 1/2" | -0.010" to 0.010" | 2.26" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3" | -0.010" to 0.010" | 2.76" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.156" Wall Thick. (-0.023" to 0.023" Tolerance) | |||||||||||
| 5/8" | -0.005" to 0.005" | 0.313" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
0.188" Wall Thick. (-0.028" to 0.028" Tolerance) | |||||||||||
| 5/8" | -0.005" to 0.005" | 0.249" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.374" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.624" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/8" | -0.005" to 0.005" | 0.749" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/4" | -0.005" to 0.005" | 0.874" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 1 1/2" | -0.005" to 0.005" | 1.124" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.624" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 2 1/2" | -0.010" to 0.010" | 2.124" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
1/4" Wall Thick. (-0.038" to 0.038" Tolerance) | |||||||||||
| 1" | -0.005" to 0.005" | 1/2" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
| 3" | -0.010" to 0.010" | 2 1/2" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736, SAE AMS6360 | 0.030" per 3 ft. | 000000000 | |||
6" Lg. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | OD Tolerance | ID | ID Tolerance | Yield Strength | Hardness | Maximum Hardness After Heat Treatment | Specifications Met | Each | |
1/4" Wall Thick. (-0.038" to 0.038" Tolerance) | |||||||||
| 1" | -0.005" to 0.005" | 1/2" | Not Rated | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736 | 0000000 | 000000 |
| 1 1/2" | -0.005" to 0.005" | 1" | Not Rated | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736 | 0000000 | 00000 |
| 2" | -0.005" to 0.005" | 1 1/2" | Not Rated | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736, SAE AMS-T-6736 | 0000000 | 00000 |
Easy-to-Weld 4130 Alloy Steel Rectangular Tubes
- Yield Strength: 75,000 psi
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C49
- Fabrication: Seamless
- Specifications Met: MIL-T-6736, SAE AMS-T-6736
Made from 4130 alloy steel, also known as chrome-moly steel, these tubes have low carbon content for good weldability. They’re often used for building frames and supports, since their flat sides make them easier to bolt than round tubes. To increase their wear resistance, you can harden them with heat treating. These tubes have been manufactured to SAE and military standards for quality and performance.
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.
Outside | Inside | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ht. | Wd. | Ht. | Wd. | 1/2 ft. Lg. | 1 ft. Lg. | 2 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
0.035" Wall Thick. | |||||||||
| 3/8" | 3/8" | 0.305" | 0.305" | 0000000 | |||||
| 1/2" | 1/2" | 0.43" | 0.43" | 0000000 | |||||
| 1/2" | 1" | 0.43" | 0.93" | 0000000 | |||||
| 5/8" | 5/8" | 0.555" | 0.555" | 0000000 | |||||
| 3/4" | 3/4" | 0.68" | 0.68" | 0000000 | |||||
| 1" | 1" | 0.93" | 0.93" | 0000000 | |||||
0.049" Wall Thick. | |||||||||
| 1/2" | 1" | 0.402" | 0.902" | 0000000 | |||||
| 5/8" | 5/8" | 0.527" | 0.527" | 0000000 | |||||
| 3/4" | 3/4" | 0.652" | 0.652" | 0000000 | |||||
| 3/4" | 1 1/2" | 0.652" | 1.402" | 0000000 | |||||
| 1" | 1" | 0.902" | 0.902" | 0000000 | |||||
| 1" | 1 1/2" | 0.902" | 1.402" | 0000000 | |||||
0.065" Wall Thick. | |||||||||
| 1/2" | 1" | 0.37" | 0.87" | 0000000 | |||||
| 5/8" | 5/8" | 0.495" | 0.495" | 0000000 | |||||
| 3/4" | 3/4" | 0.62" | 0.62" | 0000000 | |||||
| 1" | 1" | 0.87" | 0.87" | 0000000 | |||||
| 1" | 1 1/2" | 0.87" | 1.37" | 0000000 | |||||
| 1" | 1 3/4" | 0.87" | 1.62" | 0000000 | |||||
| 1" | 2" | 0.87" | 1.87" | 0000000 | |||||