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| Round Tube |
Diameter Diameter |
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Width Width |
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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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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Easy-to-Machine Gray Cast Iron Sheets and Bars
- Yield Strength: Not Rated
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C50
- Specifications Met: ASTM A247
Gray cast iron machines faster with less wear on cutting tools than most types of steel. It also absorbs vibration, so finished parts run quieter than those made of steel. It's often fabricated into gears, pulleys, and bushings.
| Wd. | Straightness Tolerance | 1 ft. Lg. | 2 ft. Lg. | |
3/8" Thick. | ||||
|---|---|---|---|---|
| 2 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 3 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 4 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 5 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 6 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 8 1/8" | 1/8" per 6 ft. | 0000000 | ||
1/2" Thick. | ||||
| 2 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 3 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 4 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 5 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 10 1/4" | 1/8" per 6 ft. | 0000000 | ||
5/8" Thick. | ||||
| 3 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 4 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 5 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 6 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 8 1/8" | 1/8" per 6 ft. | 0000000 | ||
3/4" Thick. | ||||
| 5 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 6 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 10 1/4" | 1/8" per 6 ft. | 0000000 | ||
7/8" Thick. | ||||
| 5 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 6 1/8" | 1/8" per 6 ft. | 0000000 | ||
1 1/8" Thick. | ||||
| 1 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 1 5/8" | 1/8" per 6 ft. | 0000000 | ||
| 2 5/8" | 1/8" per 6 ft. | 0000000 | ||
| 3 5/8" | 1/8" per 6 ft. | 0000000 | ||
| 8 1/8" | 1/8" per 6 ft. | 0000000 | ||
1 1/4" Thick. | ||||
| 2 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 3 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 4 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 5 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 6 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 10 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 12 1/4" | 1/8" per 6 ft. | 0000000 | ||
1 1/2" Thick. | ||||
| 4 1/4" | 1/8" per 6 ft. | 0000000 | ||
1 5/8" Thick. | ||||
| 1 5/8" | 1/8" per 6 ft. | 0000000 | ||
| 2 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 2 5/8" | 1/8" per 6 ft. | 0000000 | ||
| 3 1/8" | 1/8" per 6 ft. | 0000000 | ||
1 3/4" Thick. | ||||
| 12 1/4" | 1/8" per 6 ft. | 0000000 | ||
2 1/8" Thick. | ||||
| 2 5/8" | 1/8" per 6 ft. | 0000000 | ||
| 8 1/8" | 1/8" per 6 ft. | 0000000 | ||
2 1/4" Thick. | ||||
| 2 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 3 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 4 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 5 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 6 1/4" | 1/8" per 6 ft. | 0000000 | ||
| 12 1/4" | 1/8" per 6 ft. | 0000000 | ||
2 5/8" Thick. | ||||
| 2 5/8" | 1/8" per 6 ft. | 0000000 | ||
| 3 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 6 1/8" | 1/8" per 6 ft. | 0000000 | ||
| 8 1/8" | 1/8" per 6 ft. | 0000000 | ||
2 3/4" Thick. | ||||
| 12 1/4" | 1/8" per 6 ft. | 0000000 | ||
Oversized Easy-to-Machine
Gray Cast Iron Rods and Discs
- Yield Strength: Not Rated
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C50
- Specifications Met: ASTM A247
An oversized diameter allows for finishing to your exact requirements. Gray cast iron machines faster with less wear on cutting tools than most types of steel. It also absorbs vibration, so finished parts run quieter than those made of steel. It's often used for gears, pulleys, rollers, and bushings.
| Dia. | Dia. Tolerance | 1 ft. Lg. | 3 ft. Lg. | |
| 5/8" | 0.068" to 0.102" | 0000000 | ||
| 3/4" | 0.068" to 0.102" | 0000000 | ||
| 1" | 0.068" to 0.102" | 0000000 | ||
| 1 1/4" | 0.068" to 0.102" | 0000000 | ||
| 1 1/2" | 0.066" to 0.114" | 0000000 | ||
| 1 3/4" | 0.066" to 0.114" | 0000000 | ||
| 2" | 0.066" to 0.114" | 0000000 | ||
| 2 1/4" | 0.08" to 0.14" | 0000000 | ||
| 2 1/2" | 0.08" to 0.14" | 0000000 | ||
| 2 3/4" | 0.08" to 0.14" | 0000000 | ||
| 3" | 0.08" to 0.14" | 0000000 | ||
| 3 1/4" | 0.087" to 0.163" | 0000000 | ||
| 3 1/2" | 0.087" to 0.163" | 0000000 | ||
| 3 3/4" | 0.087" to 0.163" | 0000000 | ||
| 4" | 0.087" to 0.163" | 0000000 | ||
| 4 1/2" | 0.092" to 0.188" | 0000000 | ||
| 5" | 0.092" to 0.188" | 0000000 | ||
| 5 1/2" | 0.1" to 0.21" | 0000000 | ||
| 6" | 0.1" to 0.21" | 0000000 | ||
| 6 1/2" | 0.108" to 0.232" | 0000000 | ||
| 7" | 0.108" to 0.232" | 0000000 | ||
| 7 1/2" | 0.105" to 0.275" | 0000000 | ||
| 8" | 0.105" to 0.275" | 0000000 | ||
| 8 1/2" | 0.108" to 0.324" | 0000000 | ||
| 9" | 0.108" to 0.324" | 0000000 | ||
| 9 1/2" | 0.125" to 0.383" | 0000000 | ||
| 10" | 0.125" to 0.383" | 0000000 | ||
| 12" | 0.376" to 0.788" | 0000000 |
| Dia. | Dia. Tolerance | Each | |
1/2" Lg. | |||
|---|---|---|---|
| 8" | 0.105" to 0.275" | 0000000 | 000000 |
| 9" | 0.108" to 0.324" | 0000000 | 00000 |
| 10" | 0.125" to 0.383" | 0000000 | 00000 |
| 12" | 0.376" to 0.788" | 0000000 | 00000 |
1" Lg. | |||
| 8" | 0.105" to 0.275" | 0000000 | 00000 |
| 9" | 0.108" to 0.324" | 0000000 | 00000 |
| 10" | 0.125" to 0.383" | 0000000 | 00000 |
| 12" | 0.376" to 0.788" | 0000000 | 00000 |
1 1/2" Lg. | |||
| 8" | 0.105" to 0.275" | 0000000 | 00000 |
| 9" | 0.108" to 0.324" | 0000000 | 00000 |
| 10" | 0.125" to 0.383" | 0000000 | 00000 |
| 12" | 0.376" to 0.788" | 0000000 | 000000 |
2" Lg. | |||
| 8" | 0.105" to 0.275" | 0000000 | 00000 |
| 9" | 0.108" to 0.324" | 0000000 | 00000 |
| 10" | 0.125" to 0.383" | 0000000 | 000000 |
| 12" | 0.376" to 0.788" | 0000000 | 000000 |
3" Lg. | |||
| 8" | 0.105" to 0.275" | 0000000 | 00000 |
| 9" | 0.108" to 0.324" | 0000000 | 00000 |
| 10" | 0.125" to 0.383" | 0000000 | 000000 |
| 12" | 0.376" to 0.788" | 0000000 | 000000 |
Oversized Tight-Tolerance
Easy-to-Machine Gray Cast Iron Rods
- Yield Strength: Not Rated
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C50
- Specifications Met: ASTM A247
Precision ground to a tight diameter tolerance, these rods are ready for turning in your lathe. Gray cast iron machines faster with less wear on cutting tools than most types of steel. It also absorbs vibration, so finished parts run quieter than those made of steel. It's often used for gears, pulleys, rollers, and bushings.
| Dia. | Dia. Tolerance | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
| 5/8" | 0" to 0.010" | 0000000 | |||
| 3/4" | 0" to 0.010" | 0000000 | |||
| 1" | 0" to 0.010" | 0000000 | |||
| 1 1/4" | 0" to 0.010" | 0000000 | |||
| 1 1/2" | 0" to 0.010" | 0000000 | |||
| 1 3/4" | 0" to 0.010" | 0000000 | |||
| 2" | 0" to 0.010" | 0000000 | |||
| 2 1/2" | 0" to 0.010" | 0000000 | |||
| 3" | 0" to 0.010" | 0000000 | |||
| 4" | 0" to 0.010" | 0000000 | |||
| 5" | 0" to 0.010" | 0000000 | |||
| 6" | 0" to 0.010" | 0000000 |
Easy-to-Machine Gray Cast Iron Tubes
- Yield Strength: Not Rated
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C50
- Specifications Met: ASTM A247
Gray cast iron machines faster with less wear on cutting tools than most types of steel. It also absorbs vibration, so finished parts run quieter than those made of steel. It's often fabricated into gears, pulleys, rollers, and bushings.
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.
16" Lg. | |||||
|---|---|---|---|---|---|
| OD | OD Tolerance | ID | ID Tolerance | Each | |
1" Wall Thick. (Oversized) | |||||
| 3 1/2" | 0.087" to 0.163" | 1 1/2" | -0.25" to 0" | 0000000 | 0000000 |
| 4" | 0.087" to 0.163" | 2" | -0.25" to 0" | 0000000 | 000000 |
| 4 1/2" | 0.092" to 0.188" | 2 1/2" | -0.25" to 0" | 0000000 | 000000 |
| 5" | 0.092" to 0.188" | 3" | -0.25" to 0" | 0000000 | 000000 |
| 5 1/2" | 0.1" to 0.21" | 3 1/2" | -0.25" to 0" | 0000000 | 000000 |
| 6" | 0.1" to 0.21" | 4" | -0.25" to 0" | 0000000 | 000000 |
1 1/2" Wall Thick. (Oversized) | |||||
| 6" | 0.1" to 0.21" | 3" | -0.25" to 0" | 0000000 | 000000 |
| 7" | 0.108" to 0.232" | 4" | -0.25" to 0" | 0000000 | 000000 |
Impact-Resistant Ductile Cast Iron Rods and Discs
- Yield Strength: 55,000 psi
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C60
- Specifications Met: ASTM A536
Ductile cast iron is strong, resilient, and able to handle repeated stress without breaking. It also absorbs vibration, so finished parts run quieter than those made of steel.
| Dia. | Dia. Tolerance | 1/2 ft. Lg. | 1 ft. Lg. | 2 ft. Lg. | |
| 1" | 0.071" to 0.105" | 000000000 | |||
| 1 1/4" | 0.071" to 0.105" | 000000000 | |||
| 1 1/2" | 0.066" to 0.114" | 000000000 | |||
| 1 3/4" | 0.066" to 0.114" | 000000000 | |||
| 2" | 0.066" to 0.114" | 000000000 | |||
| 2 1/4" | 0.083" to 0.143" | 000000000 | |||
| 2 1/2" | 0.083" to 0.143" | 000000000 | |||
| 2 3/4" | 0.083" to 0.143" | 000000000 | |||
| 3" | 0.083" to 0.143" | 000000000 | |||
| 3 1/4" | 0.093" to 0.169" | 000000000 | |||
| 3 1/2" | 0.093" to 0.169" | 000000000 | |||
| 3 3/4" | 0.093" to 0.169" | 000000000 | |||
| 4" | 0.093" to 0.169" | 000000000 | |||
| 4 1/2" | 0.101" to 0.197" | 000000000 | |||
| 4 3/4" | 0.101" to 0.197" | 000000000 | |||
| 5" | 0.101" to 0.197" | 000000000 | |||
| 5 1/2" | 0.107" to 0.217" | 000000000 | |||
| 6" | 0.107" to 0.217" | 000000000 | |||
| 6 1/2" | 0.118" to 0.242" | 000000000 | |||
| 7" | 0.118" to 0.242" | 000000000 | |||
| 7 1/2" | 0.118" to 0.288" | 000000000 | |||
| 8" | 0.118" to 0.288" | 000000000 | |||
| 10" | 0.144" to 0.402" | 000000000 | |||
| 12" | 0.402" to 0.814" | 000000000 |
| Dia. | Dia. Tolerance | Each | |
1/2" Lg. | |||
|---|---|---|---|
| 6" | 0.107" to 0.217" | 0000000 | 000000 |
| 7" | 0.118" to 0.242" | 0000000 | 00000 |
| 8" | 0.118" to 0.288" | 0000000 | 00000 |
1" Lg. | |||
| 6" | 0.107" to 0.217" | 0000000 | 00000 |
| 7" | 0.118" to 0.242" | 0000000 | 00000 |
| 8" | 0.118" to 0.288" | 0000000 | 00000 |
1 1/2" Lg. | |||
| 6" | 0.107" to 0.217" | 0000000 | 00000 |
| 7" | 0.118" to 0.242" | 0000000 | 00000 |
| 8" | 0.118" to 0.288" | 0000000 | 00000 |
2" Lg. | |||
| 6" | 0.107" to 0.217" | 0000000 | 00000 |
| 7" | 0.118" to 0.242" | 0000000 | 00000 |
| 8" | 0.118" to 0.288" | 0000000 | 00000 |
3" Lg. | |||
| 6" | 0.107" to 0.217" | 0000000 | 00000 |
| 7" | 0.118" to 0.242" | 0000000 | 00000 |
| 8" | 0.118" to 0.288" | 0000000 | 00000 |
Impact-Resistant Ductile Cast Iron Bars
- Yield Strength: 55,000psi
- Hardness: Rockwell C20 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C60
- Specifications Met: ASTM A536
Ductile cast iron is strong, resilient, and able to handle repeated stress without breaking. it also absorbs vibration, so finished parts run quieter than those made of steel.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.