Steel Round Bars - Hot Rolled (H.R.)
| Grade/Alloy | 44W, 1018, 1045, 4140, 4340, 8620 |
| Length | 20' |
| Diameter | 1/4'' and more (see pages 25, 26 et 27) |
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FAQ – Everything You Need to Know About Hot Rolled (H.R.) Steel Round Bars
A Hot Rolled (H.R.) steel round bar is a metal bar manufactured by rolling steel at high temperatures. This process produces strong and versatile bars suitable for a wide range of industrial, manufacturing, and mechanical applications.
Hot rolled steel round bars are valued for their versatility and strength. They can be used to manufacture mechanical parts, industrial components, machinery, and for various applications requiring good mechanical performance.
The main difference lies in the manufacturing process. Hot rolling shapes steel while it is heated to a high temperature, whereas cold rolling involves further processing the steel at room temperature to improve dimensional accuracy, straightness, and surface finish.
Hot Rolled (H.R.) Steel Round Bar
• Rougher surface finish
• Wider dimensional tolerances
• Good mechanical strength
• Suitable for a wide range of industrial and mechanical applications
• Generally more economical
Cold Rolled (C.R.) Steel Round Bar
• Smoother, more uniform surface finish
• Tighter dimensional tolerances
• Better straightness
• Ideal for machined parts and precision applications
Hot rolled steel round bars are therefore particularly well suited for general-purpose and mechanical applications where good strength and cost-effectiveness are priorities, without requiring highly precise dimensional tolerances or surface finishes.
Cold rolled steel round bars are better suited for applications requiring greater dimensional accuracy and a higher-quality surface finish.
At Groupe David, hot rolled steel round bars are available in several grades. Each grade has a different chemical composition and set of mechanical properties, allowing the steel to be selected according to the requirements of the application.
44W Steel
44W is a structural steel grade known for its good mechanical strength and used in various metal fabrication and construction applications.
1018 Steel
1018 is a low-carbon steel grade. It is known for its good machinability and versatility, making it a commonly used grade for mechanical and general fabrication applications.
1045 Steel
1045 is a carbon steel grade with a higher carbon content than 1018. This higher carbon content generally provides greater mechanical strength and hardness, making it suitable for various mechanical components.
4140 Steel
4140 is a chromium-molybdenum alloy steel. It offers a combination of high mechanical strength, hardness, and wear resistance, particularly when heat treated.
4340 Steel
4340 is a nickel-chromium-molybdenum alloy steel. It is known for its high mechanical strength, toughness, and good fatigue resistance, particularly when its properties are optimized through appropriate heat treatment.
8620 Steel
8620 is a nickel-chromium-molybdenum alloy steel generally used when a combination of core toughness and surface hardness is required. It is particularly well suited to carburizing and is commonly used for certain mechanical components.
The choice of steel grade depends primarily on the required mechanical properties, operating conditions, and manufacturing processes planned for the part.
At Groupe David, hot rolled steel round bars are available with the following specifications:
- Standard length: 20 feet (≈ 6.1 m)
- Available diameters: starting at 1/4″
- Multiple diameters are available depending on the selected steel grade
To view the available diameters, consult pages 25, 26, and 27 of our catalogue.
Custom cutting services are also available according to your project requirements.
Hot rolled steel round bars are used in a wide range of industrial, manufacturing, and mechanical applications, including:
- Mechanical parts manufacturing
- Shafts and axles
- Machinery components
- Industrial equipment
- Metal parts and components
- Tooling
- Vehicle and equipment components
- Metal structures
- Custom fabrication projects
Their versatility and the range of available grades and dimensions make them a suitable solution for numerous manufacturing and industrial applications.
The selection depends primarily on the application, the required mechanical properties, the required dimensions, and the planned manufacturing operations.
Steel grade
- 44W for various structural and fabrication applications
- 1018 for general applications requiring good machinability
- 1045 when greater mechanical strength is required
- 4140 for demanding industrial and mechanical applications
- 4340 for mechanical applications requiring high-performance mechanical properties
- 8620 for mechanical components requiring good core toughness and a hard surface after carburizing
Diameter
The required diameter should be selected according to:
- The mechanical loads involved
- The dimensions of the part to be manufactured
- Design and machining requirements
- The required mechanical properties
Length
Hot rolled steel round bars are available in standard 20-foot lengths. Custom cutting services can be provided according to project requirements.
Our team can help you select the hot rolled steel round bar best suited to your application.
Pricing varies depending on several factors:
- Selected steel grade
- Bar diameter
- Required length
- Order quantity
- Required cutting or processing services
- Steel market fluctuations
To receive accurate pricing tailored to your project, we recommend requesting a quotation.
Yes. Groupe David offers custom cutting services as well as fast and reliable delivery services for hot rolled steel round bars.
Materials can be delivered directly:
- To your job site
- To your workshop
- To your plant
- Or to any other agreed-upon location
Delivery is available in several areas of Estrie and Montérégie, with logistics tailored to the needs of the industrial, manufacturing, and mechanical fabrication sectors.
