System of Measurement System of Measurement |
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ID ID | Hide |
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Shape Shape |
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 | Round Tube |
Material Material |
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Yield Strength Yield Strength |
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Tolerance Rating Tolerance Rating |
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Specifications Met Specifications Met |
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Minimum Temperature Minimum Temperature |
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Maximum Temperature Maximum Temperature |
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Low-Carbon Steel Grade Low-Carbon Steel Grade |
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Fabrication Fabrication |
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Hardness Hardness |
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Certificate Certificate |
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 | Material Certificate with Traceable Lot Number |
Appearance Appearance |
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Comparable To Comparable To |
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Maximum Hardness After Heat Treatment Maximum HardnessAfter Heat Treatment |
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Heat Treatment Heat Treatment |
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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
More
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. This material can be surface hardened with heat treating.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
Ultra-Strength Carbon Steel (AHSS) Round Tubes
- Yield Strength: 100,000 psi
- Hardness: Rockwell C26 (Hard)
- Heat Treatable: No
The same steel used in automobile bodies, this AHSS (advanced high-strength steel) allows you to fabricate high-strength parts using thinner material than you could with other types of steel. It is formable, weldable, and more economical than alloy steel. It's sometimes called HSLA (high-strength low-alloy) steel.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.
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. | |
0.12" Wall Thick. (-0.018" to 0.018" Tolerance) | |||||||||||
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| 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 | |||