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Alloy Steel

ISO 9001:2008-certified at our headquarters, Kanto Processing Center, and Toyokawa Office

Point 1Unparalleled Logistics and Quality

We can meet short deadlines with 5,000 tons of inventory on hand.

Point 2Integrated Processing System

- Lower costs
- Handles sophisticated needs with less labor
- Integrated processing system delivers products with high added value

  1. Material
    procurement
  2. Cutting
  3. Rough processing
  4. Heat treatment
  5. Finish processing
  6. Assembly
  7. Inspection

Material procurement

We can meet short deadlines with 5,000 tons of inventory on hand.

Main Products
Material  
Carbon steel S10C, S12C, S15C, S20C, S25C, S35C, S45C, S48C, S50C, S53C, S55C
Rolled structural steel SS400
Chrome molybdenum steel SCM415, SCM420, SCM435, SCM440
Untempered structural steel SVD45, SVD48, SVDT38
Die steel DC11, DC53
Die cast steel DH23, DH24, DH31
Bearing steel SUJ2
Stainless steel SUS304, SUS403, SUS420, SUS431, SUS440
High-speed tool steel SKH9, HM35, HS97R, HS93R
DRM1, DRM2, DRM3
Powder high-speed steel DEX20, DEX40, DEX60, ASP2015, ASP2030, ASP2052, ASP2060, ASP2023
Specified-use steel DEX-M1, DEX-M3

Shapes
Bar, square bar, plate, pipe, ring, rough cut

Note: We also have other types of products, so please ask if you need something else.

Cutting

We are the only mill in the Kanto region capable of cutting 600 tons per month for high-mix, small lot jobs.

Cutting Equipment
6 circular saws (can cut up to 150 mm diameter)
10 bandsaws (can cut up to 430 mm diameter)
Automatic bandsaw (1 set)

Rough processing

With our extensive experience and expertise, along with a wide network of partner companies, we are able to handle complex processes and high-precision part processing, and far more than cutting and grinding. We support all kinds of processing, including laser cutting, pressing, sheet metal, and can production.

Supported Processing Techniques and Descriptions of Processing
  Process Description
Cutting
/
Shearing


Cutting
A cutting process that involves cutting materials in a single line. No scraps are left over for either straight or curved cuts. Processed goods are the same shape on both ends and burrs point in the opposite direction on each end.
Shearing
A cutting process that involves using a tool to cut the material apart, like cutting paper with scissors. Although this technique often leaves scraps behind, it does offer great flexibility when deciding the shape of the punch or die. The left and right sides are cut at the same time and in the same direction, so the burrs also point in the same direction.
Blanking
This is one of the shearing processes. This process lets you create an outline of any shape by putting sheet metal on a die and pressing the material with a punch from above.
Fine blanking
This is a special kind of punching process where the sheet metal is tightly constrained. This helps minimize the occurrence of cracks in the shearing process, providing a cleaner cut.
Punching This is one of the punching processes where the piece that is punched out by the die, is used as the product.
Piercing
This is another one of the punching processes. With this process, the piece that remains on the die is used as the product.
Notching
With this process, only part of the material (not an entire piece) is cut away. In some cases, the width of the cut material is used as the product, and in other cases it is just part of a larger product.
Slitting
This is a cutting process where the workpiece is cut without actually removing the full circumference. When the workpiece is bent or shaped at the same time as the cut, it is called “lancing.”
Half blanking
In this process, the punch stops before it makes a hole, leaving the shape of the punch in the workpiece.
Trimming
This is the process of cutting away unwanted features on the edge of the workpiece to produce the final shape.
Shaving This is a finishing process where the cut edge of a sheared workpiece is carefully cut away with a punch and die.
Finish blanking
In this process, the cutting part of either the punch or the die is rounded (the die for blanking and the punch for piercing) and pressed against the workpiece to refine the shape.

  Process Description
Bending


V bend This process produces a V shape in the workpiece. The material is placed in between a V-shaped punch and a V-shaped die, which are then pressed against the material to bend it. The bend usually has a 90-degree angle.
L bend This process produces an L shape in the workpiece. Only one location is bent either up or down. With this type of bend, the workpiece is more stable during the bend process than a V bend.
U bend This process produces a U shape in the workpiece. This is also often used to produce a squared-off U shape bend. Because the left and right sides are bent symmetrically and at the same time, this process is good for producing consistent angles.
O bend This process produces an O shape in the workpiece. This refers to rolling the material into the shape of a pipe or similar. It is sometimes called “cylindrical bending” or “rolling.” Rolling the entire workpiece in one pass is difficult, so the process is usually repeated multiple times.
Z bend This process produces a Z shape in the workpiece. This is usually a two-step process, but because a die and punch are often used to bend two locations simultaneously, there is a possibility that the bend angle, dimensional accuracy, and degree of parallelization will not be as good as the two-step process.
P bend This process produces a P shape in the workpiece. This involves bending the edges of the material greater than 90 degrees. It is also called “curling.”
Folding
Like a P bend, this process involves bending the edges of the material greater than 90 degrees. It refers to any edge bending that is not a P bend.
Twisting This process bends each end of the material in opposite directions.

  Process Description
Drawing


Round drawing This drawing process produces cylinders and is also called “cylindrical drawing.”
Square drawing This process uses bending and round drawing techniques to draw the material into a square cylinder. It is sometimes called “square cylindrical drawing.”
Irregular drawing This refers to a drawing process other than round or square drawing.
Bulging This refers to a drawing process that uses the stretch of the material to form a shape.
Spinning This process involves spinning a metal plate to form a shape.
Necking
This process refines the edge of a cylindrically-drawn product and reduces the diameter.

  Process Description
Pressure
processing

Extrusion processing The material formed by pushing it through a die with a punch.
Backwards extrusion In this process, the material pressed by the punch travels through the gap between the die and the punch to form a cylindrical shape in the reverse direction as the pressing direction.
Coining
This is the process of transferring the pattern of bumps and valleys on the die surface onto the workpiece. The name of the process comes from its most common use: manufacturing coins. Another process involves coining a sheet to make only a part of the material thinner.
Upsetting
This is the process of compressing the length of an bar-shaped workpiece to increase the diameter in parts.
Indenting
In this process, a punch is pressed against the material to create an indent.
Ironing
This is the process of stroking a thick workpiece to thin it out somewhat and smooth out the surface.
Sizing
In this process, a warped product is slightly compressed to level it out.
Marking This is the process of engraving letters, symbols, or patterns in a material.

  Process Description
Cutting
Milling Milling is a cutting processing for surface treatment that uses a miller with multiple blades, such as a circular saw.
NC processing NC stands for “numerical control.” The cut dimensions, surface machining process, and other variables are all programmed and handled uniformly by a dedicated machine.
Broaching
Broaching uses a special tool called a broach to machine the surface or the inner surface of holes in the workpiece. Broaching can be performed horizontally or vertically depending on the direction of the broach.
Drilling The drilling process involves opening holes in the workpiece with a drill bit.
Tapping Tapping is the process of creating a threaded screw hole.
Slotting Slotting (vertical shaving) is used to form the inner surface of a hole by moving a ram with blade attached up and down.
Planing In the planing process, the workpiece is moved in a straight line using a tool bit against a cutting tool that removes material.
Reaming Reaming is a metalworking process in which a reamer (a rotary cutting tool) is used with a drill press. The reamer is used to improve the size, straightness, and surface finish of a hole that was opened with a drill bit.
End milling End milling uses a milling cutter called an “end mill” that has blades on the end and on the circumference of the tool. This tool is often used for surface and contour milling.

  Process Description
Precision
processing
/
special
processing



Honing
This is a type of surface processing. It uses an abrasive stone called a hone. Honing is mainly used to improve the precision of the surface on the inside of a cylinder.
Lapping
Lapping is a polishing process in which the workpiece is placed on a tool called a “lap” with a lapping agent, or abrasive material, in between. Pressure is applied on the workpiece from above and the workpiece and lap are rubbed together.
Buffing This is a type of surface processing. Buffing is a finishing process where an abrasive powder is applied to a flexible material such as cloth or leather, which is then pressed against the workpiece and rotated to smooth the surface.
Shot blasting This is a type of special processing. It is a general term for processes that involve propelling a stream of metal particles (called “shot”) against a workpiece.
Electrical discharge machining This process involves melting away part of a metal workpiece with an electrical discharge between the workpiece and a tool submerged in a dielectric liquid.
Metallizing Metallizing is a method of coating metal on the surface of a workpiece by spraying a thin layer of molten metal at high speed.
Plasma processing This process uses the plasma that is produced by the discharge that occurs when an inert gas flows between two electrodes. The superheated energy can be used for cutting, opening holes, welding, and more.
Laser processing This process uses a laser to heat, melt, or remove part of the workpiece. This extremely high-energy process is also suitable for machining materials with a high degree of hardness.

  Process Description
Welding



Arc welding This welding technique uses electrical discharge (an electric arc) to weld two pieces of the same metal together. The high heat created by the electric arc melts the metal material at the welding point.
TIG welding TIG is an abbreviation of Tungsten Inert Gas. This arc welding process uses an inert shielding gas. A non-consumable electrode is used in addition to the welding material.
MIG welding MIG is an abbreviation of Metal Inert Gas. This arc welding process uses an inert shielding gas.
Carbon dioxide welding This type of arc welding uses carbon dioxide as a shielding gas.
Spot welding In this welding process, workpieces are piled together under pressure and a current is applied. The heat from resistance of the welded objects is used to weld them together.
Butt welding Butt welding is a technique where an electric current is applied to the two materials to be joined. The resulting heat is used to melt the metal and join the pieces together. This is also sometimes called upset welding.
Turning This is a cutting process where a tool bit is applied while the workpiece rotates to achieve the desired shape.
Drilling This process involves attaching a drill bit to a spindle that is turned by a motor. The drill bit is then moved up and down to shape the workpiece. A drill press can be used for opening holes, reaming to increase the diameter of a hole, and tapping holes for screws.
Boring This is a cutting process where a drill or tool bit is used to cut out an internal diameter.
5-sided machining Having a movable double-column tool mount means the workpiece on the table can be machined from five sides--top, front, back, right, and left-- with a single set of tools.

  Process Description
Coating
Powder coating
This coating technique can be used to burn a powder-based coating on metal products without the use of organic or water-based solvents.
Solvent coating This coating technique uses a solvent such as thinner. There are several disadvantages compared to powder coating, such as increased susceptibility to rust and scratches.

Heat treatment

We use our extensive experience and expertise, as well as our wide network of partner companies, to meet our customers’ heat treatment needs.

Immersion quenching
- This process involves heating the workpiece to an appropriate temperature above the transformation point and then rapidly cooling it in a suitable medium to harden or strengthen the steel.
- This process should not be used on precision products or on spindles and other long products.
Typical
Materials
Supported
Materials
Vickers Hardness
(HV)
Rockwell (HRC)
C-Scale Hardness
Quenching
Depth (mm)
Strain
S45C
SUJ2
SKH51
SKS93
SK4
750 or less 62 or less Overall Depends on material High carbon steel C>0.45%

Carburizing and quenching
- Local quenching possible
- Indicate quenching depth on drawings
- Suitable for precision parts
Typical
Materials
Supported
Materials
Vickers Hardness
(HV)
Rockwell (HRC)
C-Scale Hardness
Quenching
Depth (mm)
Strain
SCM415 SNCM220 750 or less 62 or less Standard: 0.5
Maximum: 2
Medium Low carbon steel C<0.3%

Induction hardening
- This is a method of hardening steel by rapidly heating the surface with induction heating and then quickly cooling it
- Local quenching is possible
- Higher cost with small volumes
- Better fatigue resistance
Typical
Materials
Supported
Materials
Vickers Hardness
(HV)
Rockwell (HRC)
C-Scale Hardness
Quenching
Depth (mm)
Strain
S45C 500 or less 50 or less 1 - 2 Large Medium carbon steel C 0.3-0.5%

Nitriding and quenching
- Forms a hard layer of nitrogen compounds on the surface of steel
- Achieves the greatest quenching hardness
- Suitable for precision parts
- Suitable for slide bearing spindles
Typical
Materials
Supported
Materials
Vickers Hardness
(HV)
Rockwell (HRC)
C-Scale Hardness
Quenching
Depth (mm)
Strain
SACM645 1000 or less 68 or less 0.1-0.2 Small Nitride steel

Isonite/Tufftride
- Isonite is a nitriding technique called nitrocarburizing
- Good fatigue and abrasion resistance
- Corrosion resistance equivalent to zinc plating
- Not suitable for precision parts because it cannot be polished after heat treatment
- Suitable for no-oil lubrication
Typical
Materials
Supported
Materials
Vickers Hardness
(HV)
Rockwell (HRC)
C-Scale Hardness
Quenching
Depth (mm)
Strain
S45C
SCM415
Stainless
Carbon steel 500
Stainless 1000
Carbon steel 50
Stainless 68
0.01-0.02 Small Steel materials

Bluing
- Low-temperature annealing
- Increases elasticity by relieving internal stress from formation
Typical
Materials
Supported
Materials
Vickers Hardness
(HV)
Rockwell (HRC)
C-Scale Hardness
Quenching
Depth (mm)
Strain
SWP-B - - - - Wire

Finishing

We use our extensive experience and expertise, as well as our wide network of partner companies, to meet our customers’ finishing needs.

Coating
- Baked-on coating. This is the most common request
- Powder coating. Also known as powder baked-on coating, this environmentally-friendly process does not use organic solvents.
- Dipping. This is called dip coating.
- Electrocoating. With this technique, the workpiece to be coated is submerged in a water-based paint.

Plating
There are more types of plating than coating.
- Nickel plating, chrome plating, hard chrome plating
- Electroless nickel plating (Kanigen plating)
- Black oxide finishing, etc.

Assembly

We can quickly respond to any assembly requirements.

Inspection

After each process, we inspect the products before delivery.

Point 3Expanding Sales by Solving Problems

Our sales team puts customer satisfaction first. We aim to be a one-stop shop for the steel industry, from arranging for material to meet customer needs to providing machining methods.

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