3.000" 4130 Chromoly Tubing
Three-inch OD 4130 tubing is ordered for driveshafts and axle tubes, for rollers and structural columns, and as ring and sleeve stock for machine shops.
Where 3.000" OD 4130 Tube Is Used
Large, thin tubes are very efficient in torsion, so 3.000" in walls around 0.083" to 0.120" is a common driveshaft section. In walls of 0.188" and above the tube is more often cut into short lengths and machined into bearing housings, spacers and couplings.
Thin walls at this diameter dent easily in handling and transport. Ask for bundles to be protected, and store the tube on padded racks if the surface matters for the finished part.
Ordering 3.000" OD Tubing
State OD, wall, condition, standard and length. For driveline use, mention any balance or straightness requirement. For machined rings, give the finished OD, bore and part length so the cut length and wall can allow for clean-up. See 4130 mechanical tubing for how this product is classified.
3.000" OD 4130 Tubing: Wall, Bore and Weight Table
The table lists the bore, metal cross-section and theoretical weight for 3.000" (76.20 mm) outside diameter across the walls normally requested in cold drawn seamless 4130.
| Wall (in) | Wall (mm) | ID (in) | ID (mm) | Section area (in²) | Weight (lb/ft) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 0.049" | 1.24 | 2.902" | 73.71 | 0.454 | 1.55 | 2.30 |
| 0.065" | 1.65 | 2.870" | 72.90 | 0.599 | 2.04 | 3.03 |
| 0.083" | 2.11 | 2.834" | 71.98 | 0.761 | 2.59 | 3.85 |
| 0.095" | 2.41 | 2.810" | 71.37 | 0.867 | 2.95 | 4.39 |
| 0.120" | 3.05 | 2.760" | 70.10 | 1.086 | 3.69 | 5.50 |
| 0.156" | 3.96 | 2.688" | 68.28 | 1.394 | 4.74 | 7.06 |
| 0.188" | 4.78 | 2.624" | 66.65 | 1.661 | 5.65 | 8.41 |
| 0.250" | 6.35 | 2.500" | 63.50 | 2.160 | 7.35 | 10.94 |
| 0.375" | 9.52 | 2.250" | 57.15 | 3.093 | 10.52 | 15.66 |
Values are calculated from nominal dimensions (weight = (OD − wall) × wall × 10.69). A row in this table is a dimensional reference, not a statement that the size is held in stock; confirm availability when you enquire.
Frequently Asked Questions
What does 3.000" × 0.120" 4130 tubing weigh?
About 3.69 lb/ft, or 5.50 kg/m, from nominal dimensions.
Is 3.000" OD 4130 tube cold drawn or hot finished?
Thinner walls are generally cold drawn. Heavy walls at this diameter are more often hot finished. State the tolerance and surface you need and the appropriate form will be offered.
Is 3.000" tube the same as 3-inch pipe?
No. Three-inch nominal pipe measures 3.500" OD. Tube is ordered by actual outside diameter.
What is the bore of 3.000" × 0.188" tubing?
The nominal inside diameter is 2.624".
Which wall is used for 3.000" driveshaft tube?
Thin walls around 0.083" to 0.120" are typical, but the choice depends on torque, length and critical speed.
Enquire for 3.000" OD 4130 Tubing
Provide your required wall thickness, condition, standard, and footage for a 3.000" OD 4130 quotation.
- OD: 3.000"
- Wall Thickness
- Standard (ASTM A519)
- Condition
- Footage / Quantity
- MTC 3.1 required
- Delivery