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OD OD |
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Wall Thickness Wall Thickness |
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Shape Shape |
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Material Material |
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Hardness Hardness |
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Fabrication Fabrication |
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Specifications Met Specifications Met |
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Yield Strength Yield Strength |
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Maximum Hardness After Heat Treatment Maximum HardnessAfter Heat Treatment |
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Inside Width Inside Width |
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Certificate Certificate |
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 | Material Certificate with Traceable Lot Number |
About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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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.
| 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.319" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.444" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.569" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.694" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.010" to 0.010" | 0.944" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
0.035" Wall Thick. (-0.005" to 0.005" Tolerance) | |||||||||||
| 0.188" | -0.005" to 0.005" | 0.118" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/4" | -0.005" to 0.005" | 0.18" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.313" | -0.005" to 0.005" | 0.243" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.305" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.43" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.555" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.68" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.805" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.93" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.313" | -0.005" to 0.005" | 0.215" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.277" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.438" | -0.005" to 0.005" | 0.34" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.402" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.527" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.652" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.777" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.902" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.020" to 0.020" | 1.902" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.322" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.384" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.509" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.634" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.759" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.884" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.313" | -0.005" to 0.005" | 0.183" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/8" | -0.005" to 0.005" | 0.245" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.438" | -0.005" to 0.005" | 0.308" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.37" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.563" | -0.005" to 0.005" | 0.433" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.495" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.62" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.745" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.87" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.87" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.438" | -0.005" to 0.005" | 0.272" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.334" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.563" | -0.005" to 0.005" | 0.397" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.459" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.584" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.709" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.834" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.834" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/16" | -0.005" to 0.005" | 0.248" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.31" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.56" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.81" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.81" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.438" | -0.005" to 0.005" | 0.198" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1/2" | -0.005" to 0.005" | 0.26" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 0.563" | -0.005" to 0.005" | 0.323" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 5/8" | -0.005" to 0.005" | 0.385" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.51" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 7/8" | -0.005" to 0.005" | 0.635" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.76" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.76" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3" | -0.010" to 0.010" | 2.76" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3/4" | -0.005" to 0.005" | 0.374" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 1" | -0.005" to 0.005" | 0.624" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 2" | -0.010" to 0.010" | 1.624" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 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-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
| 3" | -0.010" to 0.010" | 2 1/2" | 70,000 psi | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0.030" per 3 ft. | 000000000 | |||
6" Lg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| OD | OD Tolerance | ID | ID Tolerance | Yield Strength | Heat Treatment | Hardness | Maximum Hardness After Heat Treatment | Specifications Met | Each | |
1/4" Wall Thick. (-0.038" to 0.038" Tolerance) | ||||||||||
| 1" | -0.035" to 0.035" | 1/2" | -0.038" to 0.038" | 80,000 psi | Annealed (Softened) | Rockwell C40 | Not Rated | ASTM A513 | 0000000 | 000000 |
| 1 1/2" | -0.035" to 0.035" | 1" | -0.038" to 0.038" | 80,000 psi | Annealed (Softened) | Rockwell C40 | Not Rated | ASTM A519 | 0000000 | 00000 |
| 2" | -0.005" to 0.005" | 1 1/2" | Not Rated | 70,000 psi | __ | Rockwell C20 | Rockwell C49 | MIL-T-6736B, SAE AMS-T-6736 | 0000000 | 00000 |
Easy-to-Weld 4130 Alloy Steel
Round Tubes with Certification
- Yield Strength: 70,000 psi
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C49
- Specifications Met: AMS-T-6736, MIL-T-6736B
All come with a traceable lot number and test report. 4130 alloy steel has a low carbon content for good weldability. It's often used for gears, fasteners, and structural applications.
6 ft. Lg. | |||||
|---|---|---|---|---|---|
| OD | OD Tolerance | ID | Straightness Tolerance | Each | |
0.049" Wall Thick. (-0.007" to 0.007" Tolerance) | |||||
| 3/8" | -0.005" to 0.005" | 0.277" | 0.030" per 3 ft. | 000000000 | 000000 |
| 1/2" | -0.005" to 0.005" | 0.402" | 0.030" per 3 ft. | 000000000 | 00000 |
| 3/4" | -0.005" to 0.005" | 0.652" | 0.030" per 3 ft. | 000000000 | 00000 |
| 1" | -0.005" to 0.005" | 0.902" | 0.030" per 3 ft. | 000000000 | 00000 |
0.065" Wall Thick. (-0.01" to 0.01" Tolerance) | |||||
| 1/2" | -0.005" to 0.005" | 0.37" | 0.030" per 3 ft. | 000000000 | 00000 |
| 3/4" | -0.005" to 0.005" | 0.62" | 0.030" per 3 ft. | 000000000 | 00000 |
| 7/8" | -0.005" to 0.005" | 0.745" | 0.030" per 3 ft. | 000000000 | 00000 |
| 1" | -0.005" to 0.005" | 0.87" | 0.030" per 3 ft. | 000000000 | 00000 |
0.083" Wall Thick. (-0.012" to 0.012" Tolerance) | |||||
| 3/4" | -0.005" to 0.005" | 0.584" | 0.030" per 3 ft. | 000000000 | 00000 |
| 7/8" | -0.005" to 0.005" | 0.709" | 0.030" per 3 ft. | 000000000 | 00000 |
| 1" | -0.005" to 0.005" | 0.834" | 0.030" per 3 ft. | 000000000 | 00000 |
| 1 1/4" | -0.005" to 0.005" | 1.084" | 0.030" per 3 ft. | 000000000 | 00000 |
0.12" Wall Thick. (-0.018" to 0.018" Tolerance) | |||||
| 5/8" | -0.005" to 0.005" | 0.385" | 0.030" per 3 ft. | 000000000 | 00000 |
| 3/4" | -0.005" to 0.005" | 0.51" | 0.030" per 3 ft. | 000000000 | 00000 |
| 7/8" | -0.005" to 0.005" | 0.635" | 0.030" per 3 ft. | 000000000 | 00000 |
| 2" | -0.010" to 0.010" | 1.76" | 0.030" per 3 ft. | 000000000 | 000000 |
1/4" Wall Thick. (-0.038" to 0.038" Tolerance) | |||||
| 1" | -0.005" to 0.005" | 1/2" | 0.030" per 3 ft. | 000000000 | 000000 |
| 3" | -0.010" to 0.010" | 2 1/2" | 0.030" per 3 ft. | 000000000 | 000000 |
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
- Specifications Met: SAE AMS-T-6736, MIL-T-6736B
4130 alloy steel has a low carbon content for good weldability. It's often used for structural applications.
For technical drawings and 3-D models, click on a part number.
Outside | Inside | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ht. | Ht. Tolerance | Wd. | Wd. Tolerance | Ht. | Wd. | 1/2 ft. Lg. | 1 ft. Lg. | 2 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
0.035" Wall Thick. (-0.004" to 0.004" Tolerance) | |||||||||||
| 3/8" | -0.020" to 0.020" | 3/8" | -0.020" to 0.020" | 0.305" | 0.305" | 0000000 | |||||
| 1/2" | -0.020" to 0.020" | 1/2" | -0.020" to 0.020" | 0.43" | 0.43" | 0000000 | |||||
| 1/2" | -0.020" to 0.020" | 1" | -0.020" to 0.020" | 0.43" | 0.93" | 0000000 | |||||
| 5/8" | -0.020" to 0.020" | 5/8" | -0.020" to 0.020" | 0.555" | 0.555" | 0000000 | |||||
| 3/4" | -0.020" to 0.020" | 3/4" | -0.020" to 0.020" | 0.68" | 0.68" | 0000000 | |||||
| 1" | -0.020" to 0.020" | 1" | -0.020" to 0.020" | 0.93" | 0.93" | 0000000 | |||||
0.049" Wall Thick. (-0.005" to 0.005" Tolerance) | |||||||||||
| 1/2" | -0.020" to 0.020" | 1" | -0.020" to 0.020" | 0.402" | 0.902" | 0000000 | |||||
| 5/8" | -0.020" to 0.020" | 5/8" | -0.020" to 0.020" | 0.527" | 0.527" | 0000000 | |||||
| 3/4" | -0.020" to 0.020" | 3/4" | -0.020" to 0.020" | 0.652" | 0.652" | 0000000 | |||||
| 3/4" | -0.020" to 0.020" | 1 1/2" | -0.020" to 0.020" | 0.652" | 1.402" | 0000000 | |||||
| 1" | -0.020" to 0.020" | 1" | -0.020" to 0.020" | 0.902" | 0.902" | 0000000 | |||||
| 1" | -0.020" to 0.020" | 1 1/2" | -0.020" to 0.020" | 0.902" | 1.402" | 0000000 | |||||
0.065" Wall Thick. (-0.007" to 0.007" Tolerance) | |||||||||||
| 1/2" | -0.020" to 0.020" | 1" | -0.020" to 0.020" | 0.37" | 0.87" | 0000000 | |||||
| 5/8" | -0.020" to 0.020" | 5/8" | -0.020" to 0.020" | 0.495" | 0.495" | 0000000 | |||||
| 3/4" | -0.020" to 0.020" | 3/4" | -0.020" to 0.020" | 0.62" | 0.62" | 0000000 | |||||
| 1" | -0.020" to 0.020" | 1" | -0.020" to 0.020" | 0.87" | 0.87" | 0000000 | |||||
| 1" | -0.020" to 0.020" | 1 1/2" | -0.020" to 0.020" | 0.87" | 1.37" | 0000000 | |||||
| 1" | -0.020" to 0.020" | 1 3/4" | -0.020" to 0.020" | 0.87" | 1.62" | 0000000 | |||||
| 1" | -0.020" to 0.020" | 2" | -0.020" to 0.020" | 0.87" | 1.87" | 0000000 | |||||
Multipurpose 4140 Alloy Steel Tubes
- Yield Strength: 60,000 psi
- Hardness: Rockwell B85 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C60
- Specifications Met: ASTM A519
Also known as chrome-moly steel, this versatile 4140 alloy steel is used for a wide range of parts, such as gears, axles, shafts, collets, and die holders. It resists fracturing from repeated stress.
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 ACTIVITY after your order ships.
| OD | OD Tolerance | ID | Heat Treatment | Straightness Tolerance | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
1/2" Wall Thick. (-0.05" to 0.05" Tolerance) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2 1/2" | -0.025" to 0.025" | 1 1/2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 2 3/4" | -0.025" to 0.025" | 1 3/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 3" | -0.025" to 0.025" | 2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 3 1/4" | -0.025" to 0.025" | 2 1/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 3 3/4" | -0.025" to 0.025" | 2 3/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 4" | -0.025" to 0.025" | 3" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
5/8" Wall Thick. (-0.063" to 0.063" Tolerance) | ||||||||
| 3 1/4" | -0.025" to 0.025" | 2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 4" | -0.025" to 0.025" | 2 3/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
3/4" Wall Thick. (-0.075" to 0.075" Tolerance) | ||||||||
| 3" | -0.025" to 0.025" | 1 1/2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 3 1/4" | -0.025" to 0.025" | 1 3/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 3 3/4" | -0.025" to 0.025" | 2 1/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 4 1/4" | -0.025" to 0.025" | 2 3/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 4 3/4" | -0.037" to 0.037" | 3 1/4" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
1" Wall Thick. (-0.1" to 0.1" Tolerance) | ||||||||
| 3 1/2" | -0.025" to 0.025" | 1 1/2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
1 1/4" Wall Thick. (-1/8" to 1/8" Tolerance) | ||||||||
| 4 1/2" | -0.037" to 0.037" | 2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 5" | -0.037" to 0.037" | 2 1/2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
| 5 1/2" | -0.037" to 0.037" | 3" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||
2" Wall Thick. (-0.2" to 0.2" Tolerance) | ||||||||
| 6" | -0.037" to 0.037" | 2" | Annealed (Softened) | 0.030" per ft. | 0000000 | |||