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Home > Metallurgy, Mineral & Energy > Steel & Products > Steel Round Bar > Carbon Steel Round Bar 1045 Hardness HB 170-220 Precision Ground for Shaft

Carbon Steel Round Bar 1045 Hardness HB 170-220 Precision Ground for Shaft

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Carbon Steel Round Bar 1045 Hardness HB 170-220 Precision Ground for Shaft photo-4

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Product Spotlights

Our Carbon Steel Round Bar 1045 (HB 170-220) is precision ground to tight tolerances (h7-h9) with excellent surface finish (Ra ≤ 1.6 μm). Ideal for shafts, it offers superb machinability, strength, and customization options. Backed by ISO9001 certification and global export capability from a reliable manufacturer.

Negotiable MOQ: 1 Ton (Price negotiable depending on order volume and customization)

Key Specifications

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Application:

Other, Shafts

Standard:

Other, AISI 1045

Material:

1045 Carbon Steel

Contact Supplier Request Quote Chat Now

Hemaokang Steel (Shandong) Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

Qingdao Port

Delivery Detail:

7 days

Product Details
Company Profile
Contact Us

Application Other, Shafts

Standard Other, AISI 1045

Material 1045 Carbon Steel

Hardness HB 170-220

Diameter Customizable (e.g., 20mm-300mm)

Length Customizable (e.g., 3000mm-12000mm)

Surface Finish Precision Ground

Tolerance h7 to h9 (available upon request)

Certificate ISO9001:2015

Processing Precision Ground, Turned, Polished

Hemaokang Steel (Shandong) Co., Ltd. is proud to offer the Carbon Steel Round Bar 1045 Hardness HB 170-220 Precision Ground for Shaft. As a trusted manufacturer established in 2025 with an annual export value of US$50 million to US$100 million and a dedicated team of 51–100 employees, we deliver high-quality steel bars that meet the rigorous demands of shaft manufacturing. Our 1045 carbon steel round bars are precision ground to achieve exceptional surface finish and dimensional accuracy, making them ideal for a wide range of industrial applications. Discover the reliability and performance that our ISO9001-certified products bring to your projects.

Key Features & Technical Specifications

Material Grade: AISI 1045 (DIN 1.1191, JIS S45C) – medium carbon steel with excellent strength and wear resistance.
Hardness Range: HB 170–220, providing a balanced combination of toughness and machinability for shaft applications.
Surface Finish: Precision ground with a smooth surface (Ra ≤ 1.6 μm) to reduce friction and improve component life.
Dimensional Tolerance: Available in h7 to h9 precision grades, ensuring tight control over diameter and straightness.
Customizable Dimensions: Diameters from 20 mm to 300 mm, lengths from 3,000 mm to 12,000 mm, with custom sizes upon request.
Straightness: ≤ 0.5 mm/m for superior performance in rotating shaft applications.
Heat Treatment Option: Normalized, quenched and tempered, or as-rolled – tailored to your specific requirements.
Surface Treatment: Black, bright, polished, or precision ground – choose the finish that suits your manufacturing process.

Parameter	Value
Chemical Composition (C)	0.42% – 0.50%
Chemical Composition (Mn)	0.60% – 0.90%
Tensile Strength	570 – 700 MPa (depending on heat treatment)
Yield Strength	≥ 310 MPa
Elongation	≥ 16%
Hardness Range	HB 170 – 220
Surface Roughness (Ra)	≤ 1.6 μm
Straightness	≤ 0.5 mm/m

Product Advantages & Customer Benefits

Excellent Machinability: The HB 170–220 hardness range allows for efficient cutting, drilling, and milling, reducing tool wear and production time.
High Dimensional Accuracy: Precision grinding ensures consistent diameter and straightness, minimizing the need for secondary machining.
Strong & Durable: 1045 carbon steel offers a good balance of strength and toughness, suitable for heavy-duty shafts, spindles, and axles.
Wide Application Range: Ideal for automotive shafts, industrial machinery, hydraulic cylinders, and general engineering components.
Customizable Options: We offer various lengths, diameters, heat treatments, and surface finishes to match your exact specifications.
Reliable Supply Chain: With an annual export value of US$50–100 million, we ensure stable inventory and timely delivery worldwide.

Trust & Quality Assurance

Hemaokang Steel is a ISO9001:2015 certified manufacturer, ensuring that every batch of carbon steel round bar undergoes rigorous quality control. Our team of experienced engineers and technicians monitors the entire production process – from raw material selection to precision grinding and final inspection. We serve major markets across North America, South America, Europe, Asia, Africa, and Oceania, and our products are trusted by hundreds of industrial clients. With a strong focus on customer satisfaction, we offer flexible packaging, fast lead times, and professional after-sales support. Choose Hemaokang Steel for your shaft material needs – quality that you can rely on.

Frequently Asked Questions (FAQ)

Q: What is the typical hardness range of your 1045 precision ground round bar?
A: Our standard hardness is HB 170–220, which is suitable for most shaft applications. Custom hardness ranges are available upon request.
Q: Can I order non-standard lengths or diameters?
A: Yes, we offer customization. Please contact our sales team to discuss your specific dimensions and tolerances.
Q: What surface finish options do you provide?
A: We offer precision ground, turned, polished, and black finishes. The precision ground surface is ideal for direct use in shaft assemblies.
Q: Is the material suitable for induction hardening?
A: Yes, 1045 steel responds well to induction hardening. We can supply the bar in normalized or quenched and tempered condition as per your requirements.
Q: Do you provide certificates of material and inspection?
A: Absolutely. We provide mill test certificates (MTC) and can arrange third-party inspection upon request.
Q: What is the minimum order quantity (MOQ)?
A: Our MOQ is typically 1 ton for standard sizes, but smaller quantities may be considered for sample orders. Please inquire.
Q: How long does it take to produce and ship?
A: For standard products, production takes 7–15 days. Shipping time depends on destination and chosen logistics. We expedite urgent orders when possible.
Q: What markets do you export to?
A: We export to North America, South America, Europe, Asia, Africa, Oceania, and the Middle East. Our global logistics network ensures reliable delivery.