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operation manual Product List

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SCM steel (round bar) 'SCM415H'

SCM steel (round bar) 'SCM415H'

Supporting standard steel grades for structural alloy steel!

"SCM415H" is a chromium-molybdenum steel, commonly referred to as "chromoly," and is a surface-hardened steel that undergoes carburizing and quenching treatment for use. It is used in products that require high fatigue strength and impact resistance. Examples of applications include general-purpose gears, pins, shafts, and high-strength toughness components. 【Features】 ■ Surface-hardened chromium-molybdenum steel ■ Undergoes carburizing and quenching treatment for use ■ High fatigue strength and impact resistance ■ Used in general-purpose gears, pins, shafts, and high-strength toughness components ■ Stock dimensions φ16 to φ380 (some sizes may not be in stock) *For more details, please refer to the catalog or feel free to contact us.

  • Special Steel
  • shaft
  • Steel

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SCM steel (round bar) 'SCM440H'

SCM steel (round bar) 'SCM440H'

Support for standard steel grades of structural alloy steel!

"SCM440H" is used for parts that require strength and toughness, similar to "SCM435H," and is referred to as high-strength steel. By adding an appropriate amount of manganese, chromium, and molybdenum to steel with a carbon content of 0.25% to 0.5%, it hardens through quenching. Furthermore, it is used for gears, shafts, and other components that require greater strength than "SCM435H" through appropriate tempering. 【Features】 ■ High-strength steel ■ Used for parts requiring strength and toughness ■ Hardens through quenching ■ Used for gears, shafts, etc. ■ Stock dimensions φ13 to φ380 (some dimensions may not be in stock) *For more details, please refer to the catalog or feel free to contact us.

  • Steel
  • Special Steel
  • gear

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SCM steel (round bar) 'SCM440H-H'

SCM steel (round bar) 'SCM440H-H'

Wide range of sizes in stock! Material "SCM440H" tempered in its black skin state.

"SCM440H-H" is a material that has been heat-treated while in the black-oxide state of "SCM440H." The tensile strength is over 980 N/mm², and the hardness ranges from HBW 285 to 352. Additionally, a heat treatment certificate can be issued. We have a wide range of sizes in stock, from φ16 to φ150. (Some sizes may not be available.) With a rich inventory and a more accurate and speedy supply system, we deliver high-quality steel through an efficient inventory and delivery system. 【Features】 ■ Material heat-treated in the black-oxide state (Marquenching processed) ■ Tensile strength: over 980 N/mm² ■ Hardness test: 285 to 352 HBW *For more details, please refer to the catalog or contact us via phone or inquiry form.

  • Steel
  • Special Steel
  • gear

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Heat-treated and tempered SCM steel (round bar)

Heat-treated and tempered SCM steel (round bar)

High-quality steel (SCM435H-H, SCM440H-H) that has been heat-treated while in a black skin condition. An eco-file is currently being offered for easy inventory confirmation at a glance.

The SCM steel (round bar) that has been quenched and tempered, 'SCM435H-H' and 'SCM440H-H', is material that has been treated in a tempered state while still in its black skin condition. For example, 'SCM440H-H' is available in a wide range of sizes from φ16 to φ150. Additionally, we have established a supply system that allows for quick responses, and we can also flexibly accommodate material cutting and component processing. 【Features】 ■ Material treated in a tempered state while still in black skin condition (products that have undergone marquenching) ■ Issuance of heat treatment certificates is possible ■ Abundant inventory and efficient delivery system ★ We are currently offering a set of two types of "Eco Files (paper)" that allow you to check product specifications and inventory status, similar to a comprehensive catalog. If you are interested, please apply through the inquiry form.

  • Other metal materials

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SCM steel (round bar) "SCM420H"

SCM steel (round bar) "SCM420H"

Support for standard steel grades of structural alloy steel! SCM steel used as skin-rolled steel.

"SCM420H" is used as a case-hardened steel, similar to "SCM415H." By adding Mo to Cr steel, the mechanical properties are improved, and the mass effect is also reduced, making it applicable to relatively large parts. The main applications include general-purpose gears, shafts, and parts that prioritize strength and machinability. 【Features】 ■ Used as case-hardened steel ■ Improved mechanical properties ■ Reduced mass effect ■ Applicable to relatively large parts ■ Used in general-purpose gears, shafts, and parts that prioritize strength and machinability ■ Stock dimensions φ28 to φ230 *For more details, please refer to the catalog or feel free to contact us.

  • Special Steel
  • shaft
  • Steel

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SCM steel (round bar) "SCM435H-R"

SCM steel (round bar) "SCM435H-R"

Supporting standard steel grades of structural alloy steel! Tough steel suitable for gears, shafts, and more.

"SCM435H" is referred to as a tough steel compared to skin-burned steel and is used for parts that require strength and toughness. By adding an appropriate amount of manganese, chromium, and molybdenum to steel with a carbon content of 0.25% to 0.5%, it is hardened through quenching. It is used for gears, shafts, bolts, and similar applications with proper tempering. 【Features】 ■ Used for parts that require strength and toughness ■ Hardened through quenching ■ Used for gears, shafts, bolts, and similar applications ■ Stock dimensions φ13 to φ350 (some dimensions may not be in stock) *For more details, please refer to the catalog or feel free to contact us.

  • Steel
  • bolt
  • Special Steel

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SCM steel (round bar) 'SCM435H-H'

SCM steel (round bar) 'SCM435H-H'

Supports standard steel grades of structural alloy steel! Material tempered in black skin condition.

"SCM435H-H" is a material that has been heat-treated while in the black-oxide state of "SCM435H." The tensile strength is over 930 N/mm² and the hardness ranges from 269 to 331 HBW. We have a rich inventory and have established a more accurate and speedy supply system, delivering high-quality steel through an efficient inventory and distribution system. [Features] ■ Material heat-treated in the black-oxide state ■ Tensile strength: over 930 N/mm² ■ Hardness test: 269 to 331 HBW ■ Stock dimensions φ16 to φ130 (some sizes may not be in stock) *For more details, please refer to the catalog or feel free to contact us.

  • Steel
  • Special Steel
  • gear

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