ASTM A519 Grade 1020 Carbon Steel Seamless Tubes are the most used and most sold material in different industries and they're made with the ASTM A519 mechanical tubes specifications. Due to their superb properties of being strong, easily weldable and machinable. The percentage of carbon in these steel tubes ranges between 0.18% and 0.23%. They are ideal for use as structural members, automobiles, farm machinery, shafts, bushings, and other heavy duty industrial uses. The tubes' good ability to undergo cold-forming processes and good dimensionality make them favored by original equipment manufacturers, metal fabricators, and mechanical engineers. ASTM A519 Grade 1020 Carbon Steel Seamless Tubings, offered by USA Piping Solution, come in both cold drawn seamless (CDS) and hot finished seamless (HFS) forms, along with special sizes and cut lengths, mill test certificates, and fast deliveries for domestic and international clients.
ASTM A519 1020 Specification Overview
All Grade 1020 seamless tubes from USA Piping Solution are produced to the current revision of ASTM A519 and are available with dual certification to ASME SA519 on request.
| Property | Details |
|---|---|
| Standard | ASTM A519 |
| Grade | 1020 (UNS G10200) |
| ASME Equivalent | ASME SA519 Grade 1020 |
| Common Designations | AISI 1020, SAE 1020, UNS G10200 |
| Manufacturing Process | Seamless rolling or extrusion |
| Supply Conditions | Cold Drawn Seamless (CDS) and Hot Finished Seamless (HFS) |
| OD Range | 0.188 in (4.8 mm) to 10.750 in (273 mm) |
| Wall Thickness Range | 0.018 in (0.46 mm) to 2.000 in (50.8 mm) |
| Length | Random or cut-to-length per customer requirement |
| Mill Test Report | Supplied as standard with each shipment |
CDS vs HFS for ASTM A519 Grade 1020: Which Process to Specify
Selecting between cold drawn seamless and hot finished seamless for Grade 1020 depends on end-use requirements. Visit our Cold Drawn Seamless Mechanical Tubing page for a full process overview. The guidance below is specific to Grade 1020.
| Criterion | Cold Drawn Seamless (CDS) | Hot Finished Seamless (HFS) |
|---|---|---|
| Dimensional Tolerance | Tighter: suits precision machined bores | Standard: suits structural or welded fabrications |
| Surface Finish | Bright, smooth: ready for machining without turning | Mill finish: may need cleanup cut |
| Yield Strength | Higher (380 MPa / 55 ksi min) | Lower (205 MPa / 30 ksi min) |
| Ductility / Formability | Good but lower than HFS | Higher: preferred for bending and forming |
| Typical OD Range | 0.25 in to 5.00 in (6.35 to 127 mm) | 1.00 in to 10.75 in (25.4 to 273 mm) |
| Best Application | Bushings, shafts, hydraulic cylinder barrels | Structural frames, agricultural equipment, welded assemblies |
For Grade 1020, CDS is the preferred form for precision machined components while HFS is the preferred form for structural weldments and large-diameter fabrications. For higher yield strength and wear resistance, review ASTM A519 1035 Seamless Tube as the next step up in the carbon grade ladder.
ASTM A519 Grade 1020 Dimensional Availability
USA Piping Solution maintains Grade 1020 in a wide range of outside diameters and wall thicknesses to minimize lead time. Custom cut lengths, tight-tolerance OD and bore, and non-standard wall thicknesses are available on request. Representative stocked sizes are shown below.
| OD (inches) | OD (mm) | Wall Thickness (inches) | Wall Thickness (mm) |
|---|---|---|---|
| 0.500 | 12.70 | 0.049 to 0.120 | 1.24 to 3.05 |
| 1.000 | 25.40 | 0.049 to 0.250 | 1.24 to 6.35 |
| 1.500 | 38.10 | 0.065 to 0.375 | 1.65 to 9.53 |
| 2.000 | 50.80 | 0.083 to 0.500 | 2.11 to 12.70 |
| 3.000 | 76.20 | 0.120 to 0.750 | 3.05 to 19.05 |
| 4.000 | 101.60 | 0.188 to 1.000 | 4.78 to 25.40 |
| 6.000 | 152.40 | 0.250 to 1.250 | 6.35 to 31.75 |
Sizes outside the above range are available on indent. A519 1020 wall thickness chart data is available for the full specification range on request.
Applications of ASTM A519 Grade 1020 Seamless Tube
The versatility of Grade 1020 makes it the default choice across a wide range of North American manufacturing industries:
- Structural frames and sub-frames in agricultural and construction equipment
- Automotive axle tubes, drive shafts, and wheel spindles requiring controlled chemistry and seamless integrity
- Hydraulic cylinder barrels (HFS large bore) and piston rods (CDS small bore) in mobile and industrial equipment
- Cold-drawn bushings and sleeve bearings where a machinability upgrade from Grade 1010 is not required
- Conveyor rollers, idler tubes, and drum shells in material handling systems
- Mechanical shafts and spindles machined from tube to reduce material removal versus solid bar
- Welded structural assemblies in farm implements and earthmoving equipment where weldability is paramount
For full category breadth, visit Carbon Steel Pipes & Tubes or contact our engineering team to confirm grade suitability for your application.
Other ASTM A519 Grades
USA Piping Solution supplies the complete ASTM A519 mechanical tubing grade family. Select any grade below for full specifications and RFQ:
| Grade | Type | Page Link |
|---|---|---|
| 1035 | Low carbon, highest machinability in A519 carbon grades | ASTM A519 1035 Seamless Tube |
| 1010 | Highest machinability, lower carbon A519 Grade | ASTM A519 1010 Seamless Tube |
| 1040 | Medium carbon, heat treatable for axles and spindles | ASTM A519 1040 Seamless Tube |
| 1045 | Medium-high carbon, highest strength in plain carbon A519 range | ASTM A519 1045 Seamless Tube |
| 1041 | Resulfurized medium carbon for improved machinability | ASTM A519 1041 Seamless Tube |
| 1541 | High Mn resulfurized, dual machinability and hardenability benefit | ASTM A519 1541 Seamless Tube |
| 4130 | Chromium-molybdenum alloy, highest strength in A519 cluster | ASTM A519 4130 Seamless Tube |
AISI 1020 seamless tube | SAE 1020 mechanical tubing | UNS G10200 tube | 1020 cold drawn seamless tube | 1020 CDS tube supplier | A519 Grade 1020 yield strength | carbon steel tube 1020 dimensions | A519 1020 wall thickness chart | ASME SA519 1020 tube