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  • Alloy Steel
    • Mold Steel Hot Work Die Steel 5CrMnMo
      Mold Steel Hot Work Die Steel 5CrMnMo
      Mold Steel 5CrMnMo is developed on the basis of medium carbon steel by adding three elements of Cr, Mn, Mo. The steel is a hot work die steel with slightly poor hardenability and thermal fatigue resistance. Steel is suitable for various types of forging dies with high strength and high wear resistance.When higher toughness is required, electro slag remelting steel can be used.
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    • Medium Hardenability Steel High Strength SCM440(SCM440H)
      Medium Hardenability Steel High Strength SCM440(SCM440H)
      SCM440 steel belongs to medium hardenability steel with good comprehensive mechanical properties after heat treatment, such as good strength and plasticity, and good impact properties.They are usually delivered in a quenched and tempered condition.
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    • Low-alloy High-strength Economical Structural Steel S355J2
      Low-alloy High-strength Economical Structural Steel S355J2
      S355J2 is a type of low-alloy high-strength structural steel plate, which possesses a variety of superior qualities such as high strength, high toughness, fatigue resistance, impact resistance, corrosion resistance, as well as good weldability and machinability. This steel plate complies with the EN10025 standard and is suitable for various delivery conditions, including controlled rolling, normalized and tempered, or normalized state. Due to its excellent comprehensive performance, S355J2 steel plate is widely used in industries such as construction, mechanical manufacturing, and petrochemicals. It is a European standard hot-rolled structural steel product and is also one of the commonly used steel plate grades in China, widely recognized and utilized by the manufacturing industry.
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    • Wear Resistance High Toughness 18CrNiMo7-6
      Wear Resistance High Toughness 18CrNiMo7-6
      DIN 1.6587 steel, sometimes also called 17CrNiMo6 steel (old designation, new designation 18CrNimo7-6 in the newer standard version EN 10084), is a case-hardening alloy. It is widely used for its dynamic strength, especially in industries that require high surface hardness. The chemical composition of 1.6582 offers many advantages, from durability to resistance to wear. This material is often used to manufacture mechanical parts and structural components that require high strength and toughness.
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    • Carbon Steel
      • Carbon Structural Steel High-quality Steel SAE1020
        Carbon Structural Steel High-quality Steel SAE1020
        SAE1020 steel is a high-quality carbon structural steel that is usually used directly in the supplied state without heat treatment. Its advantages include high cost-effectiveness, good machinability, good welding performance and good formability. SAE1020 steel is widely used in mechanical parts, automotive parts, structural applications, fasteners, hand tools and equipment, agricultural equipment, pipes and tubes, and bicycle frames.
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      • Medium Carbon Steel High Cost Performance SAE1045
        Medium Carbon Steel High Cost Performance SAE1045
        SAE 1045/AISI 1045 Carbon Steel is a medium carbon steel which is characterized by good weldability, good machinability, high strength and impact properties in either the normalized or hot forged condition. It has high cost performance.
        SAE 1045/AISI 1045 steel is widely used for axles, bolts, forged connecting rods, crankshafts, torsion bars, light gears, guide rods etc.
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      • Medium Carbon Steel Engineering Steel C45E+N
        Medium Carbon Steel Engineering Steel C45E+N
        C45E+N steel is a medium carbon engineering steel with excellent performance. It is suitable for manufacturing mechanical parts that are subject to high loads and impacts, especially those parts that require superior mechanical properties and surface hardness, such as connecting rods, bolts, gears and shafts. Its performance can be further improved through appropriate heat treatment.
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      • Balanced Strength Balanced Hardness C35R
        Balanced Strength Balanced Hardness C35R
        Steel C35R is suitable for slightly higher loaded parts in vehicle, engine and machine engineering with enhanced workability at constant mechanical properties (e.g. transmission parts, crank shafts, cylinder). Lowest application temperature -25°C. It has balanced strength and balanced hardness.
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      About Us

      Union Steel is China’s lead supplier of alloy steel both nationally and internationally. Founded in 1988 and now employing 356 people in 3 provinces of China. We are committed to providing customers with a fast and professional one-stop supply solution for alloy steel. 
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      30000
      tons
      Dynamic inventory
      356
      +
      Number of employees
      36
      +
      Industry experience
      42CrMoS4 Alloy Steel

      Certifications

      Union Steel is a leading supplier of alloy steel in China and abroad. It has been established for more than 30 years. Union Steel has a dynamic inventory of 30,000 tons all year round. 
      With high-quality products, excellent delivery performance and perfect customer service, it has won the praise and trust of customers at home and abroad.

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      Latest News​​​​​​​

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      How Heat Treatment Affects The Elasticity And Durability of Spring Steel Components

      When you hold a high-quality spring, you expect it to snap back every single time. Whether it is a tiny component in a medical device or a massive suspension leaf in a heavy-duty truck, the magic lies in a delicate balance between flexibility and strength.

      2026-04-04
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      Why Spring Steel Outperforms Regular Carbon Steel in High Stress Applications

      When you design a component that must bend thousands of times without breaking, the choice between Spring Steel and regular Carbon steel isn't just a matter of price.

      2026-04-22
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      Spring Steel Vs Stainless Steel And Which One Suits Your Project Better

      Choosing between spring steel and stainless steel feels like picking between a powerlifter and a marathon runner.

      2026-04-09
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      High-Strength Alloy Steel: Enhancing Machinery Durability And Performance

      In today’s high-performance industrial environments, the demands placed on machinery are greater than ever.

      2025-07-03

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      The Management and Staff at Union Steel, have a firm belief that by identifying the customers’ needs, we can achieve the best results for all. Union Steel warmly welcomes friends around the world to cooperate with us.

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      Phone: +86-18904079192
      Add: No. 237, Shenbei West Road, Yuhong District, Shenyang City, Liaoning Province

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