Cold rolled round bars offer strong, precise stock for fabrication, machining, and crafting. This guide highlights five solid options, detailing who they’re best for, and where to use them. Ideal buyers include hobby DIYers, metal fabricators, machinists, and gear or shaft makers seeking uniform tolerances and dependable corrosion resistance. Compare features, sizes, and finishes below to choose the right bar for your project.
| Product | Material | Size (Diameter x Length) | Best For | Why It Stands Out |
|---|---|---|---|---|
| Zonon 2 Pcs Cold Rolled Round Bar | A36 Mild Steel | 2.95″ x 2.99″ | Small crafts, spares | Two pieces; versatile, corrosion resistant, durable |
| FOXCUP Steel Cold Rolled Round Bar | 1018? Carbon Steel | 5/8″ Diameter | Machining and fabrication | Clear ASTM-A108 reference; standard stock for many projects |
| Rocaris 2pcs 1″ Diameter Bar | 1018 Carbon Steel | 1″ x 12″ | Shafts, gears, lathes | Tighter tolerances; anti-rust oil coating |
| Metal Made Easy 1018 Steel Bar | 1018 Carbon Steel | 1″ x 12″ | Machining, drilling, mounting plates | Wide workability; suitable for forming and joining |
| 1″ Diameter Round Bar, 1045 | 1045 Steel | 1″ x 36″ (or 24″) | Parts requiring good strength | Cold rolled for higher tensile strength than low-carbon |
Zonon 2 Pcs Cold Rolled Round Bar
Product overview: Zonon supplies two cold rolled round bars made from A36 mild steel. Each piece measures about 2.95 inches in diameter and 2.99 inches in length. The double-pack offers ready spares for ongoing projects or multiple small builds. Best for hobbyists and small craft makers needing durable, corrosion-resistant stock with readily available extra pieces. Considerations: not designed for high-precision machining in every case; verify fit for specialized tolerances before use.
FOXCUP Steel Cold Rolled Round Bar
Product overview: This bar references ASTM-A108, indicating standard specification alignment for carbon steel shapes. The 5/8″ diameter size is common for small fixtures, bushings, and shafts. Best for machinists and fabricators who need a widely compatible stock that is straightforward to machine and finish. Limitation: the listing does not specify length options beyond diameter, so confirm length needs before purchase.
Rocaris 2pcs 1″ Diameter 1018 Bar
Product overview: These Rocaris bars are 1″ in diameter and 12″ long, made from 1018 carbon steel with a tighter tolerance. They come in a two-piece set and are lightly coated with anti-rust oil to extend the service life. Best for projects needing reliable strength and straightforward machining for shafts, gears, or lathes. Caution: oil coating may require deburring or cleaning before finishing processes.
1″ Diameter Round Bar, 1045
Product overview: This 1″ diameter 1045 cold rolled steel rod is sold in a 36″ length. It is described with a length tolerance of +/- 1/8″. Best for projects requiring higher strength than low-carbon options or for parts needing consistent straightness and finish. Limitation: longer pieces may require more handling and straightening during machining or fabrication.
1″ Diameter Round Bar, 1045
Product overview: Another 1″ diameter 1045 cold rolled steel option in a 24″ length with the same basic properties as the 36″ version. Best for shorter fixtures or prototypes that require reliable strength and machinability. Choose this if you need a shorter bar for compact builds, avoiding extra material waste. Limitation: shorter length may not suit longer shafts or assemblies without splicing.
Buying Guide
What should you consider when choosing cold rolled round bars?
- Material type: Common options include 1018 and 1045 carbon steels. 1018 offers good ductility and machinability; 1045 provides higher strength and hardness after heat treatment.
- Tolerance and finish: Tighter tolerances and smoother finishes improve machinability and fit in assemblies. Verify the exact tolerances listed by the seller.
- Diameter and length: Match stock size to your design. If you’re machining shafts or gears, ensure adequate length for machining allowances and future wear.
- Coatings and protection: Some bars arrive with anti-rust oils. Plan for cleaning, deburring, or surface preparation before finishing.
- Intended use: For indoor crafting, corrosion resistance is useful; for outdoor use, ensure appropriate protective coating or material choice.
- Availability and packaging: Multi-pack options provide spares, while single pieces reduce waste for specific projects.
FAQ
- What is cold rolled steel used for in bars?
Answer: It provides higher dimensional precision and smoother surfaces suitable for machining, fabrication, and prototype builds. - Is 1018 steel suitable for shafts and gears?
Answer: Yes, 1018 offers good machinability and adequate strength for general shafts and gears, especially in lighter-duty applications. - What should I know about 1045 steel bars?
Answer: 1045 has higher tensile strength and can deliver better wear resistance after appropriate heat treatment, ideal for higher-stress parts. - Do these bars come with finishes or coatings?
Answer: Some listings mention anti-rust oil or coatings; plan for cleaning before finishing if needed. - How do I choose the right length?
Answer: Select length based on the final part dimensions plus extra for machining tolerance, setup, and waste. - Which size is most versatile?
Answer: 1″ diameter bars in common lengths (12″, 24″, 36″) cover a wide range of general-purpose projects and fixtures.
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