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45# / S50C Medium Carbon Steel Round Bar (Dia 4–300mm) | Precision Turned Shaft Stock – KUTU

Material

45# / S50C carbon steel

Diameter

4mm to 300mm

Surface

Black skin, turned, ground, polished

Hardness

Hot rolled; can be quenched and tempered

Tolerance

h9, h11 for turned and ground bars

Applications

Shafts, pins, gears, machinery parts

Medium Carbon 45# / S50C Precision Turned Steel Round Bar (Dia 4–300mm) Versatile medium carbon structural steel supplied bright turned or peeled. Offers high lathe turning efficiency and balanced strength for guide shafts and pins. Key Advantages & Capabilities

  • Precision Turned OD: Smooth surface finish ready for CNC lathe chucking.

  • Wide Diameter Stock (4–300mm): Available in stock for immediate dispatch.

  • Induction Hardening Capable: Surface hardenable for local wear resistance. 💡 Optional On-Demand Machining & Wire-EDM Services

  • CNC Turning & Threading: Customized shaft and pin turning.

  • Centerless Grinding: Precision tolerance outer diameter finishing.

  • Saw Cutting: Custom blank cutting to specified lengths. Technical Specifications

  • Grades: China 45# | JIS S50C | AISI 1045

  • Condition: Normalized / Annealed | Precision Turned / Ground

  • Applications: Machine guide shafts, mold guide pins, structural bolts, gears.

  • 📩 Upload your CAD drawings or dimensional requirements for a 2-hour quote.

 

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A:Absolutely. Beyond supplying raw materials, we provide full custom precision machining services. This includes CNC milling, grinding, surface flattening, and custom vacuum heat treatment tailored to your exact blueprints. We deliver near-net-shape blocks to save your production time.

A:Yes, our facility is equipped with heavy-duty CNC milling machines, high-precision grinding machines, and automated sawing systems. We supply not only raw tool steel plates but also fully machined mold bases and custom-sized steel blocks according to your industrial specifications.

A: Our comprehensive service covers everything from steel grade selection consulting to custom cutting, precision machining, and full internal ultrasonic testing (SEP 1921-84). This ensures global toolmakers receive ready-to-use materials with guaranteed quality.

A: Yes, absolutely. We understand that tool and mold steel reliability is critical to your tooling life and production stability. We provide free material samples (standard test blocks or small discs) for metallurgical analysis, chemical composition testing, and hardness verification. You can place a sample request via our chat or contact forms.

A: While the steel material itself is 100% free, international express freight (via DHL, FedEx, or UPS) is typically covered by the buyer. You can provide your courier account number for freight collect. Our Premium Policy: The exact shipping cost you paid for the sample will be 100% credited back and deducted from your first bulk trial order invoice, making the entire sample process completely risk-free for you.

Material

45# / S50C carbon steel

Diameter

4mm to 300mm

Surface

Black skin, turned, ground, polished

Hardness

Hot rolled; can be quenched and tempered

Tolerance

h9, h11 for turned and ground bars

Applications

Shafts, pins, gears, machinery parts

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