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Help CenterCarbon Steel Round Bar for Shaft Manufacturing, AISI 1055, Hot Rolled, 50mm-300mm, Good Toughness
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Hemaokang Steel (Shandong) Co., Ltd. is pleased to present its AISI 1055 carbon steel round bar, specially supplied for shaft manufacturing and mechanical engineering applications. This hot rolled round bar is offered in a versatile diameter range of 50mm to 300mm, with good toughness that supports durable shaft components under cyclic loading and normal wear conditions. Our production process combines controlled billet selection, uniform heating and rolling practice, ensuring a consistent cross-section and dependable internal quality. As an export-oriented steel supplier located in Liaocheng, Shandong, China, we are committed to providing industrial buyers with stable material, transparent service and timely delivery.
AISI 1055 is a medium-high carbon steel with a balanced carbon content that provides an effective combination of strength, hardness and toughness. When supplied in the hot rolled condition, the round bar exhibits good machinability for subsequent turning, grinding and cutting operations. It is widely used in the manufacture of shafts, spindles, axles, gears and other transmission components where fatigue resistance and impact-resistant behavior are required. The material can also be heat treated to adjust its final hardness, making it flexible for different mechanical design requirements.
Why choose AISI 1055 for shaft manufacturing
Shaft components are often exposed to bending, torsion, wear and localized stress. AISI 1055 offers a favorable balance between hardness and ductility, allowing the part to resist deformation while maintaining enough toughness to absorb shock loads. After normalizing or quenching and tempering, the steel can reach a mechanical property profile suitable for many shaft applications. This heat treatment flexibility is important when the same base material must serve different final operating conditions. Hot rolled round bar also provides a practical starting point for forging, machining and precision grinding.
Key features at a glance
- Good toughness: The steel grade is selected for applications that demand resistance to shock loads and stress concentration, making it suitable for shaft forging or machining.
- Hot rolled finish: Mill scale may be present on the outer surface; this can be removed by peeling, machining or shot blasting according to your production needs.
- Wide diameter range: Available from 50mm to 300mm, allowing factories to choose the stock size closest to the final component diameter and reduce material waste.
- Customizable length: Lengths can be tailored to your handling equipment, cutting efficiency and end-product requirements.
- Supply flexibility: We support optional processing services, such as cutting, peeling, grinding and heat treatment, to better match your production flow.
- Export experience: With Qingdao port as the main shipment point, we coordinate sea freight for different destination regions smoothly.
Product specifications
| Parameter | Value / Condition |
| Material grade | AISI 1055 carbon steel |
| Production process | Hot rolled |
| Diameter | 50mm - 300mm |
| Length | Customer specified / customizable |
| Surface condition | Hot rolled black surface with mill scale |
| Toughness | Good, for shaft manufacturing use |
| Quality system | ISO9001 certified production management |
| Port of shipment | Qingdao, China |
Typical chemical composition reference
| Element | Typical percentage |
| Carbon | 0.50 - 0.60% |
| Manganese | 0.60 - 0.90% |
| Phosphorus | 0.040% max |
| Sulfur | 0.050% max |
The above composition is a typical reference for AISI 1055 and is not a product guarantee. For specific project requirements, please confirm the required chemistry with our sales team so that the appropriate mill test certificate or material test certificate can be arranged.
Advantages for the customer
- Reduced stock cost: By selecting the closest diameter stock from the 50mm-300mm range, you can reduce the amount of raw material removed during machining and lower total cost.
- Better production yield: Custom cut lengths help avoid short leftover pieces and improve material planning in your workshop.
- Fewer supply partners: Ordering steel grade, size, length and optional surface processing from one supplier simplifies your procurement process.
- Heat treatment compatibility: The grade responds well to common industrial heat treatment methods, including normalizing, quenching, and tempering.
- Simplified logistics: Qingdao port loading allows efficient container and bulk vessel arrangement for many international sea routes.
We can offer optional services such as cutting to exact length, turning or peeling to remove surface scale, centerless grinding, and heat treatment preparation. These services are available upon request and can be customized according to your order volume and final application. For shaft manufacturers, this means fewer external processing steps and a smoother material flow from steel supplier to workshop.
Why work with Hemaokang Steel
- ISO9001 certified quality management system covers our production and sales process.
- Located in Liaocheng, Shandong, with convenient access to Qingdao port for export shipment.
- Annual export value in the range of US$50 million to US$100 million.
- Dedicated team of 51-100 employees serving both international and domestic customers.
- Active supply experience across North America, South America, Eastern and Western Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Central America, Northern and Southern Europe, South Asia, and the domestic Chinese market.
- Flexible business terms and responsive communication for inquiries, samples, and production schedules.
AISI 1055 carbon steel round bar is a practical and dependable choice for shaft manufacturing. With a broad diameter range, good toughness and the support of an ISO9001-managed export team, we can help you build a stable raw material pipeline. Contact us with your required diameter, length, heat treatment or machining requirements. We are ready to provide a clear quotation and delivery plan based on your order details.
Frequently asked questions
Q1: What is the typical application of AISI 1055 round bar?
AISI 1055 is often used for shaft manufacturing, axles, spindles, connecting rods and other machine parts that require good toughness and resistance to wear. Because it is a medium-high carbon steel, it can be heat treated to achieve higher hardness while retaining core toughness.
Q2: Can the round bar be supplied in custom lengths?
Yes. We can cut the material according to your required length for export. Please mention the length, tolerance and the type of machine you will use so we can recommend the most suitable cutting plan.
Q3: What is the diameter tolerance for hot rolled round bar?
Hot rolled round bar normally follows standard mill tolerances, but exact values can vary with diameter range and rolling practice. Please share your dimensional tolerance with us, and we will confirm whether our current supply can meet your requirement.
Q4: Is AISI 1055 suitable for induction hardening?
AISI 1055 can be used in applications where surface hardening is required. The carbon content is sufficient for induction hardening, and final results depend on the pre-hardened condition, heating parameters, and specified hardness layer.
Q5: Do you provide heat treatment services before delivery?
Heat treatment is available as an optional service for specific orders. We can arrange normalizing, annealing, quenching, or tempering according to your application requirements. Please confirm the target hardness or mechanical properties when making an inquiry.
Q6: What is the export packaging method?
Round bars are usually bundled with steel straps and loaded in containers or bulk vessels based on diameter, length and destination. Protective packing, end caps or anti-rust coatings can be arranged upon request.
Q7: How can I get a quotation?
Please send us your required grade, diameter, length, quantity and destination port. Our sales team will provide a quotation with delivery time and shipping terms. Additional processing requirements can also be included in the quote.
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