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Round bar Product List

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NAK55 round bar

NAK55 round bar (HRC 37~43)

High-performance, precision plastic mold pre-hardened steel of the free-cutting type. It has good mirror polishing properties and contains free-cutting elements, resulting in excellent machinability. Stock sizes: Φ13 to Φ503. Delivery condition: Pre-hardened. Application: Precision plastic molds. It has been heat-treated to 37-43 HRC (surface guarantee), allowing for immediate use after processing. If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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NAK80 round bar

NAK80 round bar (HRC 37~43)

Pre-hardened steel with a focus on mirror polishing properties for high-performance, precision plastic molds. It is suitable for molds that prioritize mirror polishing properties and discharge machining finishes, such as transparent products. Stock sizes: Φ13 to Φ303 Delivery condition: Pre-hardened Application: Precision plastic molds Heat-treated to 37-43 HRC (surface guarantee), allowing for immediate use after processing. ★If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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DC11 round bar (equivalent to SKD11)

DC11 round bar

Excellent wear resistance and hardens with air cooling, equivalent to JIS SKD11 cold work die steel. Good hardenability, hardens with air cooling (no concern for cracking due to air cooling). Thermal dimensional changes are very small (thermal distortion is very small, suitable for molds requiring precision). Stock sizes: Φ13 to Φ152 Delivery condition: spheroidized annealed ★If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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DC53 round bar

DC53 round bar

Since the hardenability is improved compared to SKD11, issues related to hardness during processes such as vacuum heat treatment will be resolved. Below are the main features: (1) Higher heat treatment hardness than SKD11 (2) Twice the toughness of SKD11 (3) Improvement of large carbides in SKD11 Stock sizes: Φ13 to Φ252 Delivery condition: spheroidized annealed ★If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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QCM64-HARMOTEX round bar

QCM64-HARMOTEX round bar

High hardness, high toughness, high wear resistance cold work die steel By applying QCM64-HARMOTEX to molds made of SKDK11, SKH51, or powder high-speed steel, improvements in productivity and reductions in manufacturing costs can be expected. (1) Productivity improvement (2) Material cost reduction (3) Mold life extension Stock sizes: Φ32 to Φ90 Delivery condition: spheroidized annealed ★If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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EXEO-CR20 round bar

EXEO-CR20 High Strength High Corrosion-Resistant Stainless Steel

This is a new concept martensitic stainless steel. It has a hardness of up to 60 HRC and a strength exceeding 2 GPa, achieving superior corrosion resistance compared to SUS420J2. It also has good grindability, contributing to a reduction in processing time. Stock sizes: Φ13 to Φ80 Delivery condition: Annealed ★If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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YK30 round bar (equivalent to SKS93)

YK30 round bar

Carbon tool steel for oil quenching equivalent to JIS SKS93. It has been subjected to vacuum degassing refining, ensuring stable quality. It has good hardenability and hardens with oil cooling (minimal cracking and deformation). It excels in toughness and wear resistance, improving the lifespan as a tool. Manganese and chromium are added to SK3 to enhance hardenability. Stock sizes: Φ13 to Φ150 Delivery condition: spheroidized annealed ★If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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GOA round bar (equivalent to SKS3)

GOA Round Bar

Excellent hardenability and wear resistance JIS SKS3 improved alloy tool steel. Due to the addition of special elements, it has greater hardenability compared to JIS SKS3, allowing for uniform high hardness even in relatively large dimensions. The spheroidizing annealing provides good and stable machinability. Stock sizes: Φ13 to Φ150 Delivery condition: spheroidized annealed ★If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • Steel

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S-STAR Round Bar

S-STAR Round Bar

For high hardness and ultra-polished corrosion-resistant plastic molds, we use 13Cr stainless pre-hardened steel. It combines corrosion resistance, wear resistance, and ultra-polished finish, making it suitable for molds for flame-retardant resins, glass fiber reinforced resins, and transparent resins. Stock sizes: Φ13 to Φ130 Delivery condition: Pre-hardened 31 to 34 HRC ★ If you have specific dimensions in mind, you can request a quote/order through the related link here.

  • Special Steel
  • alloy
  • stainless

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