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  • Steel bar

    High strength non-heat treated steel for hot forging

    Process omission
    Easy processing
    High strength
    Weight reduction
    Environmental
    response

    • Characteristics

      Component design according to customers' purposes, shape and size of forged parts.

    • Advantages

      Enables omission of the quenching and tempering process.

    • Applied parts

      Crank shaft, knuckle, connecting rod

  • Steel bar

    Steel bar for cold forging

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      • A wide range of strength and excellent workability

      • Component design according to the purpose and processing type of customers.

    • Advantage

      Enables cold forging in a wide range of purposes and processing types

    • Applied parts

      Piston pins, piston couple

  • Steel bar

    Steel for high strength connecting rod

    Process omission
    Easy processing
    High strength
    Weight reduction

    • Characteristics

      • High fatigue and high buckling strength non-heat treated steel

      • High quality and stable fracture splittability (fracture splittable heel)

    • Advantages

      • Weight reduction and fuel improvement

      • Enables the omission of manufacturing process

    • Applied parts

      Connecting rod

  • Wire rod

    Wire rod for high strength valve spring

    High strength
    Weight reduction

    • Characteristics

      • High cleanliness and long life

      • Maintain high strength and good workability

    • Advantages

      Reduce spring weight and size of engine

    • Applied parts

      Valve spring

  • Steel bar

    Steel for high strength gear (XG5, CM201, etc.)

    Process omission
    Easy processing
    High strength
    Weight reduction
    Environmental
    response

    • Characteristics

      • Design of components that are optimized for customers' needs

      • XG5: high tooth surface strength and tooth bending strength

      • CM201: high cycle bending strength
        Decrease of carburized abnormal layers and maintaining the thickness of carburized hardening layers

    • Advantages

      • Weight reduction and fuel improvement

      • Enables cold forging by combining a spheroidizing heat treatment

      • XG5: enables cold forging

      • CM201: realize a high fatigue life

    • Applied parts

      Gears

  • Steel bar

    Steel for low distortion, high durability and soft nitriding

    Process omission
    Easy processing
    High strength
    Weight reduction
    Environmental
    response

    • Characteristics

      Pitting resistance and high fatigue life resulting from hardening of deep layers
      Fatigue strength

    • Advantages

      Reduced quenching strain enables the omission of the grinding process to correct teeth.

    • Applied parts

      Gears

  • Steel bar and wire rod

    Steel to prevent coarse particles (NSACE)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      Coarse particle resistance for high-temperature carburizing

    • Advantages

      Enables high-temperature carburizing and the omission of intermediate heat treatment process

    • Applied parts

      Gears, shafts, pins and bolts

  • Steel bar and wire rod

    Mild Alloy

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      • Same components as standardized steel

      • Reduction of hardness with the same rolling process

    • Advantages

      • Enables the omission of annealing treatment process before cold processing.

      • Same hardness distribution as conventional materials after carburizing and quenching.

    • Applied parts

      Input shafts, CVJ inner race, differential pinion, cross joints

  • Steel bar and wire rod

    Super Mild Alloy

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      • Addition of trace element

      • Hardness equivalent to the spheroidizing annealing (SA) materials with the same rolling process

    • Advantages

      • Enables the omission of annealing treatment process before cold processing.

      • Use of SA enables more softening and longer life of metal molds.

    • Applied parts

      Gears, shafts

  • Steel bar

    Steel for high strength and high frequency quenching

    High strength
    Weight reduction

    • Characteristics

      • Excellent bearing fatigue strength and bending fatigue strength

      • Optimal component design according to customers' needs

    • Advantages

      • Enables the omission of carburizing heat treatment

      • Contributes to the use of high torque and reduction of part size.

    • Applied parts

      CVJ outer race, shafts

  • Steel bar

    Super Forge (SF)

    Process omission
    Easy processing

    • Characteristics

      Controlled rolling – improves carbide spheroidizing levels by combining control cooling and spheroidizing annealing

    • Advantages

      Increase the limit of processing while forging.

    • Applied parts

      CVJ outer race, shafts

  • Steel bar and wire rod

    Steel for direct normalizing treatment (FG, DN)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      Refining of structures using the controlled rolling method.

    • Advantages

      Enables omission of the normalizing treatment

    • Applied parts

      Lift axle shafts, piston rods, drive shafts

  • Steel bar

    High strength and high toughness steel omitting quenching and tempering

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      High strength and high toughness equivalent to quenching and tempering steel using our original rolling method

    • Advantages

      Enables omission of quenching and tempering treatment processes.

    • Applied parts

      Rollers, links

  • Wire rod

    High strength suspension string steel

    High strength
    Weight reduction

    • Characteristics

      Excellent hydrogen embrittlement property and toughness

    • Advantages

      Improves flexibility of suspension design and weight reduction

    • Applied parts

      Suspension strings

  • Wire rod

    Wire rod for steel tire codes

    Process omission
    Easy processing
    High strength
    Weight reduction
    Environmental
    response

    • Characteristics

      • Reduces hard inclusion and segregation.

      • Stable code property (strength, etc.) with small component fluctuation.

      • Our original high strength component design

      • Thin wire rod (can supply wire rod with diameters of 3.8Φ, 4.0Φ, 4.5Φ)

    • Advantages

      • Enables stable wire drawing processing that prevents disconnection.

      • Enables weight reduction of tires in the high strength special component menu.

      • Enables omission of process in the thin wire rod menu.

    • Applied parts

      Steel codes

  • Wire rod

    Steel for high strength bolts (MB series, ADS series)

    Process omission
    Easy processing
    High strength
    Weight reduction
    Environmental
    response

    • Characteristics

      Controls hydrogen embrittlement(delayed fracture)and contributes to higher strength.

    • Advantages

      Reduces weight with smaller bolts and reduction of number of mounting bolts

    • Applied parts

      Steel codes, bolts, nuts

  • Steel bar and wire rod

    Boron steel for cold forging (SBR, NHB)

    Process omission
    Easy processing

    • Characteristics

      Maintains adequate bolt strength without a spheroidizing annealing process by reducing the carbon amount and adding boron.

    • Advantages

      • Enables simplification of heat treatment process

      • Reduces costs for alloy steel

    • Applied parts

      Shafts, bolts, nuts

  • Wire rod

    Non-refining steel for cold forging (NHF, SUC80D)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      Our original high strength and non-refining component design

    • Advantages

      • Enables omission of quenching and tempering processes after cold forging. (requires bluing treatment)

      • Enables cold forging while maintaining high strength.

    • Applied parts

      Shafts, bolts, nuts, ball tie-rods

  • Wire rod

    Non-annealing type low-carbon aluminum killed steel (SNN*: A/B)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      Controls strain aging.

    • Advantages

      • Enables repeated processes without annealing

      • Small processing hardening during cold forging

    • Applied parts

      Shafts, bolts, nuts, ball tie-rod spark plugs

  • Wire rod

    New soft wire rod (DS, DL)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      In-line softening treatment realizes a hardness level equivalent to the normal annealing to the rolling process.

    • Advantages

      • Extends the life span of metal molds.

      • Enables omission of the annealing process before wire drawing.

    • Applied parts

      Shafts, bolts, nuts

  • Wire rod

    Simple-annealing type wire rods (ED, EC, ES)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      In-line softening treatment realizes the unified refining of annealing structures and reduction of hardness level after annealing.

    • Advantages

      • Extends the life span of metal molds.

      • Enables simplification (omission of grinding) in the wire drawing process.

    • Applied parts

      Shafts, bolts, nuts

  • Steel bar

    Non-refining steel for direct cutting

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      • A wide range of strength levels

      • Component design according to customers' purposes

    • Advantages

      Enables omission of quenching and tempering processes.

    • Applied parts

      Piston rods, steering rack bars

  • Steel bar and wire rod

    Free-cutting steel for machine structures

    Process omission
    Easy processing

    • Characteristics

      • Machinery properties equivalent to carbon steel for machine structures and alloy steel for machine structures

      • Excellent machinability

    • Advantages

      • Extends the life span of tools.

      • Increases productivity.

    • Applied parts

      Various automobile parts

  • Steel bar and wire rod

    SUMICUT (low-carbon free-cutting steel)

    Process omission
    Easy processing

    • Characteristics

      Excellent machinability (contains sulfur, sulfur + zinc)

    • Advantages

      • Increases the life span of tools.

      • Increases productivity.

    • Applied parts

      Heavy cutting parts, OA shafts

  • Steel bar and wire rod

    Zinc-free free-cutting steel (EZ, SUMIGREENS, T, CS)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      Excellent machinability (no zinc added)

    • Advantages

      • Expands the life span of tools.

      • Increases productivity.

      • Reduces environmental load substances.

    • Applied parts

      Heavy cutting parts, crankshafts, connecting rods, OA shafts

  • Wire rod

    Wire rod for saw wires (SPURKS)

    Process omission
    Easy processing
    High strength
    Weight reduction
    Environmental
    response

    • Characteristics

      • High cleanliness and surface uniformity.

      • Thin wire rod (can supply wire rod with diameters of 3.8Φ, 4.0Φ, 4.5)

    • Advantages

      • Reduces wire disconnection during wire drawing and cutting processes.

      • Reduces the cutting loss of silicon wafer, etc. due to thin wires.

    • Applied parts

      WR for cutting

  • Wire rod

    SHTB, steel for high tension bolts

    High strength
    Weight reduction

    • Characteristics

      Controls hydrogen embrittlement and contributes to high strength.

    • Advantages

      Enables reduction of the size of joint works and construction costs.

    • Applied parts

      High power bolts

  • Steel bar and wire rod

    Steel for fire resistant bolts

    Environmental
    response

    • Characteristics

      Excellent fire resistance

    • Advantages

      Applied to connecting bolts of fire resistant (FR) steel for construction structures.

    • Applied parts

      High power bolts

  • Steel bar and wire rod

    Steel for weather resistant bolts

    Environmental
    response

    • Characteristics

      Excellent weather resistance

    • Advantages

      Applied to connecting bolts of steel structures such as bridges.

    • Applied parts

      High power bolts

  • Wire rod

    Wire rod for high strength bridge cables

    High strength
    Weight reduction

    • Characteristics

      • Thick and high strength materials

      • Received the "Main Award" of the 47th (FY 2014) Ichimura Prize in Industry

    • Advantages

      Enables the reduction of design flexibility of bridges and decrease of construction costs.

    • Applied parts

      Bridge cables

  • Wire rod

    DLP wire rod (DLP: Direct in-Line Patenting)

    Process omission
    Easy processing
    Environmental
    response

    • Characteristics

      • Our original in-line heat treatment wire rod.

      • Excellent balance of strength and extension.

      • Can be used for a wide range of purposes.

    • Advantages

      • Enables omission of the heat treatment process (LP = lead patenting) by the customer.

      • Contributes to environmental load reduction by saving energy.

      • Contributes to the reduction of environmental load substances.

    • Applied parts

      Bridge cables

  • Steel bar

    Steel for high strength chain

    High strength
    Weight reduction

    • Characteristics

      Our original component design contributes to high strength.

    • Advantages

      Enables weight reduction of chains for mooring of marine structures, etc.

    • Applied parts

      Chains

  • Wire rod

    TOUGH GUARD series

    Environmental
    response

    • Characteristics

      Maintains 5 times the corrosion resistance of conventional zinc aluminum alloy.

    • Advantages

      • Extends the life span and reduces costs.

      • Excellent environmental performance

    • Applied parts

      Wire mesh for bank protection, fences, power lines, etc.

  • Wire rod

    Thin wire rod(5.0mm, 4.5mm, 4.0mm, 3.8mm, 3.6mm)

    Process omission
    Easy processing
    High strength
    Weight reduction
    Environmental
    response

    • Characteristics

      • Wire diameter (thin)

      • Excellent wire drawing capability

    • Advantages

      • Enables omission of the patenting process.

      • Enables omission of the wire drawing process.

    • Applied parts

      Valve springs, suspension springs, steel codes, WR for cutting, bridge cables, wire mesh for bank protection, fences, power lines, etc.