共和工業所 List of Products and Services

Swedish steel wear-resistant plate HARDOX is used as a material for various wear-resistant attachments in industries such as mining, construction, recycling, agriculture, forestry, shipbuilding, and road construction. Its combination of hardness and toughness allows for innovative design of structures and components. We are HARDOX Wearparts, a member of the SSAB Group, and we strive to provide the highest quality wear parts utilizing our expertise, information, and technology in wear resistance to extend the life of our customers' equipment and reduce costs. 【Features】 ● High wear resistance, high hardness ● High strength, high toughness ● Uniform strength, hardness, and toughness throughout the core ● Excellent flatness and internal stability ● Excellent weldability and repairability ● Various machining options available ● Impact resistance and resistance to welding cracks even in cold environments ● Various steel material standards including plates, round bars, and pipes ● Options available for various grades, thicknesses, and applications ● Custom and made-to-order options available 【Applications】 ■ Mining and quarrying: Crushers, buffer containers ■ Recycling: Shredding blades, screens ■ Vehicle industry: Dump truck bodies

Channel-shaped steel, known as channel, is used in various applications such as construction, can manufacturing, and equipment. Channels made by bending HARDOX, a hard, strong, and highly tough wear-resistant steel plate, allow for lightweight structural designs without permanent deformation or cracking, thereby enhancing the added value of our customers' products. Channel products made by bending the latest wear-resistant HARDOX500TUF steel plate possess higher hardness and strength than HARDOX450. The mechanical properties of HARDOX wear-resistant steel plates exhibit high toughness, high hardness, and high strength even at low temperatures of -40°C, regardless of climate, terrain, or environment, ensuring a long service life. 【Features】 ● High wear resistance, 8 times that of ordinary steel in the case of HX450. ● High hardness, with a Brinell hardness of 450 for HX450. ● High strength, with a tensile strength of 1400 MPa for HX450. ● High toughness, with an impact value of 50 J (-40°C) for HX450, resistant to cracking. ● No heat treatment or surface treatment required. ● Options available for various grades, thicknesses, and applications. ● Custom orders and bespoke designs are possible.

Guides used as guiding devices, such as press guides and conveyor chain guides, require strict wear resistance and impact resistance. To ensure smooth movement, good machinability of the material is also required. The only material that can satisfy these demands for our customers is the wear-resistant steel plate Hardox, which is hard, strong, highly tough, and has excellent machinability. The key to the consistent success of Hardox wear-resistant steel plates has been their excellent wear resistance and impact resistance. By using Hardox for guides, it is possible to achieve lightweight structural designs without permanent deformation or cracking. 【Features】 ● High wear resistance, 12.5 times that of ordinary steel for HX500. ● High hardness, Brinell hardness of 500 for HX500. ● High strength, tensile strength of 1550 MPa for HX500. ● High toughness, impact value of 30 J (-40°C) for HX500, resistant to cracking. ● No heat treatment or surface treatment required. ● Available in various grades and thicknesses, depending on application. ● Custom orders and made-to-order options are available. 【Applications】 ■ Press guides ■ Conveyor guides ■ Conveyor chain guides ■ Scraper chain guides ■ Various wear-resistant guides

In demanding tasks, mechanical strength and wear resistance are required for pins, shafts, and wheels. The material that satisfies these requirements for our customers is the hard, strong, and highly tough wear-resistant steel plate HARDOX. An example is in the welding assembly device for agricultural machinery frames, where during trial runs, about 1 in 10 positioning pins broke. However, using HARDOX 500 pins, we produced 5,000 units over approximately a year and a half, and not a single pin has broken yet. 【Features】 ● High wear resistance, 12.5 times that of ordinary steel for HX500. ● High hardness, Brinell hardness of 500 for HX500. ● High strength, tensile strength of 1550 MPa for HX500. ● High toughness, impact value of 30 J (-40°C) for HX500, resistant to cracking. ● No heat treatment or surface treatment required. ● Various grades and thicknesses can be selected based on application. ● Custom and made-to-order options are available. 【Applications】 ■ High-strength, high-wear pins. ■ High-strength, high-wear bushings. ■ High-strength, high-wear shafts. ■ High-strength, high-wear wheels.

Appropriate wear resistance measures are the key to business success. Buckets, hoppers, and casings made from wear-resistant steel Hardox maximize the wear resistance of your equipment and facilities, extending operational time to the fullest. 【Features】 ● High wear resistance, 12.5 times that of ordinary steel for HX500. ● High hardness, Brinell 500 for HX500. ● High toughness, resistant to cracking. ● No heat treatment, surface treatment, or overlay required. ● Machining, welding, and cutting are possible. ● Various grades and thicknesses available for selection based on application. ● Customization and tailoring are possible. 【Applications】 ■ Buckets ■ Excavator buckets ■ Skeleton buckets ■ Conveyor buckets ■ Concrete buckets ■ Hoppers ■ Service tanks ■ Multi-branch hoppers ■ Dampers ■ Casings

The liners made from wear-resistant steel plate HARDOX not only possess excellent toughness and high strength, but also exhibit outstanding weldability and workability. Moreover, they maintain high toughness and high hardness even at low temperatures of -40°C. 【Features】 ● High wear resistance, 25 times that of ordinary steel in the case of HX600 ● High hardness, Brinell hardness of 600 in the case of HX600 ● High strength, tensile strength of 2000 MPa in the case of HX600 ● High toughness, impact value of 20 J at -40°C in the case of HX600 ● Uniform strength, hardness, and toughness throughout the core ● No need for buildup, heat treatment, or surface treatment ● Excellent weldability and workability ● Impact resistance and weld crack resistance are ensured even in cold regions ● Options available for various grades, thicknesses, and applications ● Custom and made-to-order options available 【Content Note: For more details, please refer to the catalog.】

There are various types of blades in the world, but why not compare the cost and durability with conventional products? (Heat treatment, surface treatment, and hardfacing are not necessary.) If you contact our steel materials department, we can produce prototypes from just one piece. 【Features】 ● High wear resistance, HARDOX600 is 25 times that of ordinary steel. ● High hardness, HARDOX600 has an HB of 600, equivalent to SKD11. ● High toughness, resistant to cracking. ● No heat treatment, surface treatment, or hardfacing required. ● Uniform strength, hardness, and toughness throughout the core. ● No hardfacing, heat treatment, or surface treatment needed. ● Even when used in cold regions, it possesses impact resistance and resistance to welding cracks. ● Machinable, weldable, and can be cut. ● Available in various grades and thicknesses, selectable based on application. ● Custom orders and customization available. 【Applications】 ■ Rotating and fixed blades for single-shaft crushers. ■ Rotating and fixed blades for double-shaft crushers. ■ Hammer mills for hammer-type crushers. ■ Cutter bits for mobile and self-propelled crushers. ■ Prism knives. ■ Crushing blades for pelletizers. ■ Chipper knives for various types of grinders. ■ Cutters and blades for various shredders.

For the efficient sorting of crushed stone, gravel, industrial waste, and more, sieves, screens, and trommels are essential. HARDOX, known for its excellent wear resistance and impact resistance, boasts high toughness and hardness even at low temperatures of -40°C, regardless of climate, terrain, or environment, ensuring a long service life. 【Features】 ● High wear resistance, 12.5 times that of ordinary steel for HX500 ● High hardness, Brinell hardness of 500 for HX500 ● High strength, tensile strength of 1550 MPa for HX500 ● High toughness, impact value of 30 J at -40°C for HX500 ● Uniform strength, hardness, and toughness throughout the core ● No need for buildup, heat treatment, or surface treatment ● Excellent weldability and machinability ● Impact resistance and weld crack resistance even in cold regions ● Available in various grades, thicknesses, and applications ● Custom orders and bespoke options available 【Applications】 ■ Various wear-resistant sieves ■ Various wear-resistant screens ■ Various wear-resistant trommels ■ Die plates ■ Sieve mesh ■ Screen-type molding machines ■ Vibrating sieves ■ Vibrating screens ■ Two-stage screens ■ Supply sorting machines 【Content Note: For more details, please refer to the catalog.】

"HARDOX" is a wear-resistant steel plate that meets the demanding requirements of abrasion. It has uniform and high hardness, high strength, and excellent toughness, making it suitable for a wide range of applications. "HARDOX" is a product developed by SSAB Swedish Steel in Oxelösund, which has gained global acclaim, and Kyowa Kogyo Co., Ltd. is a certified HARDOX processing company known as "Hardox Wearparts" by SSAB Swedish Steel. [Features] - Depending on the application, we offer five grades from HARDOX400 to HARDOX600, with cutting sales tailored to customer needs in terms of thickness and width. - Despite its high strength and hardness, it can be processed in various ways, such as gas cutting, laser cutting, bending, machining, drilling, and welding. - With ultra-high strength exceeding that of high-tensile steel, it allows for weight reduction. For more details, please contact us or download the catalog.

HARDOX is manufactured and sold by the Swedish special steel manufacturer SSAB. The wear-resistant steel plate HARDOX is characterized by its high hardness without heat treatment, making it possible to minimize wear. It also possesses high toughness, allowing for bending and welding without cracking. In addition to plates, we also handle round bars and pipes with the same mechanical properties. As a new product, we have started handling the wear-resistant overlay steel plate DUROXITE, which is effective against sliding wear caused by powders and fine particles, for which HARDOX was previously considered unsuitable. 【Features】 ○ A cutting sales system tailored to customer needs, with five grades of HARDOX ranging from 400 to 600, available in various thicknesses and widths. ○ High strength and high hardness while allowing for various processing methods → Gas cutting, laser cutting, bending, machining, drilling, welding, etc. ○ Possibility of weight reduction with ultra-high strength that exceeds high-tensile steel. *For more details, please contact us or download the catalog.

The "Wear-Resistant Steel Plate HARDOX Product Achievement Case Collection" is a collection of case studies featuring the product achievements of the special steel plate "HARDOX," which has uniform and high hardness, high strength, and excellent toughness. "HARDOX" offers five grades ranging from HARDOX400 to HARDOX600, with cutting and sales arrangements tailored to customer needs in terms of thickness and width. Currently, we are giving away the case collection for free. [Featured Cases] - HARDOX400 Product Achievement Photos - HARDOX450 Product Achievement Photos - HARDOX500 Product Achievement Photos - HARDOX550 Product Achievement Photos - HARDOX600 Product Achievement Photos For more details, please contact us or download the catalog.

This is a wear-resistant overlay wire product developed for overlay welding on general materials and wear-resistant steel plates like HARDOX using semi-automatic welding machines. The welded material contains a high proportion of very hard chromium-rich carbide, making it highly wear-resistant. Duroxite wear-resistant overlay plates are suitable for applications where parts cannot be processed, pinpoint wear areas, maintenance, and repairs. Duroxite100Wire is primarily designed for use on wear-resistant components subjected to sliding wear from soil, sand, and abrasives at temperatures up to 350°C. It can also be utilized for the repair and reinforcement of processed products made from Duroxite wear-resistant overlay plates.

The latest upgrade in the Hardox series, Hardox 500 Tuf, not only has the same hardness as Hardox 500 but also features a narrower nominal hardness range (475–505 HB) and a minimum nominal hardness that is higher than that of Hardox 500. With guaranteed impact toughness (27 J at -20°C), its wear resistance in simulations is improved by 35% to 40% compared to Hardox 450. Additionally, while Hardox 500 Tuf has the same hardness as Hardox 500, it possesses the same bending characteristics as Hardox 450, and welding does not require preheating for thicknesses below 16 mm, making it easier to process.

Hardox HiAce is a true wear fighter, especially in mildly acidic corrosive environments that can be detrimental to equipment. This corrosion-resistant steel plate protects equipment from general corrosion and pitting, and is expected to improve equipment condition and extend its lifespan. It helps address the challenges of corrosive wear environments found in urban and industrial waste management, waste-to-energy plants, mining, and process industries.

We would like to introduce three products from the Hardox series of wear-resistant steel plates manufactured by Swedish Steel, which we handle. Each product is specialized in corrosion resistance, toughness, and heat resistance, contributing to enhancing the durability of equipment and facilities operating in harsh environments, such as dump trucks, construction machinery, containers, and coke ovens. 【Product Lineup】 <Hardox HiAce> - Strong against corrosion from weak acidic liquids, contributing to increased service life - Suitable for garbage collection trucks, trucks for transporting acidic compounds, waste processing equipment, etc. <Hardox 500Tuf> - Equipped with extremely high strength, hardness, and toughness, suitable for harsh operating conditions - Ideal for large dump trucks, recycling containers, hydraulic shovel buckets, etc. <Hardox HiTemp> - Exhibits high shape stability even in high-temperature environments up to 500°C - Suitable for equipment in coke ovens, foundries, steel mills, and slag buckets, etc. *For more details, please refer to the materials. Feel free to contact us with any inquiries.

【Publication content: For more details, please refer to the catalog.】 Wear-resistant steel HARDOX is characterized by its high hardness and strength, as well as its high impact resistance. Focusing on this property, we custom-manufacture special bolts for attaching and detaching liners and other components that are subjected to harsh operating environments, as well as bolts that require consideration of wear resistance. A company was experiencing significant issues with the installation bolts for the inner lining of a rod mill that crushes ore and metal rods, with about two bolts breaking each day. By using bolts made from HARDOX500, the breakage was dramatically reduced to just five bolts per year! Maintenance time was shortened, and operational efficiency significantly increased!! Our company's HARDOX500 bolts were featured in a magazine published by SSAB Swedish Steel, distributed worldwide. Moreover, we received a silver medal! *Bolts are crucial components used for joining parts, and their lifespan can be greatly affected by usage conditions, load states, and bolt shapes. Therefore, detailed discussions are necessary when placing an order.

The chutes, cyclones, and pipes of crushers require wear resistance, impact resistance, and machinability. Wear-resistant steel HARDOX plates possess these characteristics. 【Features】 ● High wear resistance, 12.5 times that of ordinary steel for HX500. ● High hardness, Brinell 500 for HX500. ● High toughness, resistant to cracking. ● No heat treatment, surface treatment, or overlay required. ● Machining, welding, and cutting are possible. ● Various grades and thicknesses can be selected based on application. ● Custom orders and customization are available.

Plates made from HARDOX wear-resistant steel not only possess excellent toughness and high strength, but also have outstanding weldability and workability. Moreover, they maintain high toughness and high hardness even at low temperatures of -40°C. 【Features】 ● High wear resistance, 25 times that of ordinary steel in the case of HX600 ● High hardness, Brinell hardness of 600 in the case of HX600 ● High strength, tensile strength of 2000 MPa in the case of HX600 ● High toughness, impact value of 20 J (-40°C) in the case of HX600 ● Uniform strength, hardness, and toughness throughout the core ● No need for buildup, heat treatment, or surface treatment ● Excellent weldability and workability ● Equipped with impact resistance and weld crack resistance even for use in cold regions ● Available in various grades, thicknesses, and applications ● Custom orders and made-to-order options available 【Applications】 ■ Fan plates for blowers and feeders ■ Various wear-resistant wear plates ■ Various base plates ■ Water impact plates ■ Plates for crushers ■ Side plates (with screw machining) ■ Grab bit keep plates ■ Anvils ■ Washer plates ■ Screw blade sides ■ Edges for snow removal machines in cold regions 【Content Note: For more details, please refer to the catalog.】

The wear-resistant steel plate HARDOX rail has uniform strength and toughness from the surface to the center, does not require heat treatment, is resistant to wear and internal fatigue damage, maintains its properties even at low temperatures, and achieves wear resistance under harsh conditions. 【Features】 ● High wear resistance, 12.5 times that of ordinary steel for HX500. ● High hardness, Brinell hardness of 500 for HX500. ● High strength, tensile strength of 1550 MPa for HX500. ● High toughness, impact value of 30 J (-40°C) for HX500, resistant to cracking. ● No heat treatment or surface treatment required. ● Available in various grades and thicknesses, suitable for different applications. ● Custom orders and bespoke options are available.

Using Hardox wear-resistant steel plates in truck bodies and dump trucks, along with flooring, demonstrates superior lightweight properties and strength, making a difference at various levels. Especially with the adoption of the latest upgrade in the Hardox series, the Hardox 500 Tuf wear-resistant steel plate, the strength and weight reduction of the vehicle body are improved, enhancing load distribution and enabling trucks and dump trucks to achieve a higher level of performance. Even after loading and unloading, the reduction in vehicle body weight leads to fuel savings and reduced tire wear, thereby improving the overall performance of the truck and increasing customer satisfaction. The mechanical properties of Hardox wear-resistant steel plates exhibit high toughness, high hardness, and high strength even at low temperatures of -40°C, regardless of climate, terrain, or environment, ensuring a long service life. 【Features】 ● High wear resistance, 8 times that of ordinary steel for HX450. ● High hardness, Brinell hardness of 450 for HX450. ● High strength, tensile strength of 1400 MPa for HX450. ● High toughness, impact value of 50 J (-40°C) for HX450, resistant to cracking. ● No heat treatment or surface treatment required. ● Various grades and thicknesses available for different applications. ● Custom and made-to-order options available.

Sprockets and tooth-shaped components are parts used for power transmission. They are widely utilized in general industrial machinery such as machine tools and conveyor systems. Sprockets and tooth-shaped components made from HARDOX wear-resistant steel exhibit superior lightweight properties and strength, enhancing the performance of our customers' equipment. The mechanical properties of HARDOX wear-resistant steel provide high toughness, high hardness, and high strength even at low temperatures of -40°C, regardless of climate, terrain, or environment, ensuring a long service life. 【Features】 ● High wear resistance, 12.5 times that of ordinary steel for HX500. ● High hardness, Brinell hardness of 500 for HX500. ● High strength, tensile strength of 1550 MPa for HX500. ● High toughness, impact value of 30 J (-40°C) for HX500, resistant to cracking. ● No heat treatment or surface treatment required. ● Available in various grades and thicknesses, suitable for different applications. ● Custom orders and bespoke designs are possible.

Toolox, which boasts the highest hardness in the world as a pre-hardened steel, combines excellent properties such as high toughness, hardness, machinability, dimensional stability, and fatigue resistance. Toolox has also introduced a round bar type, allowing for various applications. 【Mechanical Properties】 Tensile Strength (MPa) 　　TOOLOX44 Tensile Strength: 1450 MPa Yield Strength (MPa) 　　TOOLOX44 Yield Strength: 1300 MPa Hardness (HBW) 　　TOOLOX44 Hardness: 440 HBW Impact Value (J) 　　TOOLOX44 Impact Value: 30 J (20°C) Maximum Operating Temperature (°C) 　　TOOLOX44 590 °C

Strenx high-strength steel plates are truly deserving of the name high-performance steel, boasting superior performance that surpasses conventional structural steel, enhancing product strength, lightweight properties, safety, as well as competitiveness and sustainability. 【Mechanical Properties】 Tensile Strength (MPa) 　　STRENX700 Tensile Strength: 850 MPa Yield Strength (MPa) 　　STRENX700 Yield Strength: 700 MPa Impact Value (J) 　　STRENX700 Impact Value: 69 J (-40°C) Maximum Operating Temperature (°C) 　　STRENX700 580°C ◆Exhibiting at the 2024 New Environmental Exhibition◆ Date: May 22 (Wednesday) to May 24 (Friday), 2024, 10:00 AM to 5:00 PM Venue: Tokyo Big Sight (Booth Number: East Hall 2 A-220)

The wear-resistant overlay steel plate DUROXITE is composed of a wear-resistant material that is built up on soft steel or Hardox wear-resistant steel plates. It is suitable for applications subjected to severe abrasive wear and medium to low levels of impact. The multi-layer overlay can maintain full wear resistance up to 350°C (660°F) and a typical surface hardness of 55 HRC at high temperatures up to 540°C (1000°F), and it is available in single or multiple layers with a thickness of up to 20mm. DUROXITE WIRE is also available, allowing for extended wear resistance through its use in welding applications. Surface Hardness: Single Pass: 55~57 HRC (590~630 HV) Double Pass: 59~62 HRC (675~750 HV) Triple Pass or More: 60~64 HRC (700~810 HV) *Surface hardness is measured on a machined flat surface directly beneath the overlay surface.

Our company, as a member of the SSAB Group under HARDOX WEARPARTS, specializes in the machining and cutting of various Swedish steel materials manufactured by SSAB Sweden Steel, including wear-resistant steel HARDOX. We utilize our expertise, information, and technology related to wear resistance to take on various processing challenges. 【Various steel materials handled by SSAB Sweden Steel】 ● Wear-resistant steel plate HARDOX HARDOX600 HARDOX550 HARDOX500 HARDOX450 HARDOX400 ● Wear-resistant steel pipe HARDOX TUBE 500 ● Wear-resistant steel round bar HARDOX bar ● Structural steel plate TOOLOX ● Structural wear-resistant steel round bar TOOLOX bar ● High-strength steel plate STRENX ● Wear-resistant overlay steel plate DUROXITE ● Wear-resistant overlay steel DUROXITE 100 WIRE ● Heat-resistant and wear-resistant steel plate HARDOXHITEMP ● Corrosion-resistant and wear-resistant steel plate HARDOXHIACE ● New type of wear-resistant steel plate HARDOX500TUF