420J2 Stainless Steel Plate Sheet Metal Fabrication Parts
At EMERSON METAL, we specialize in producing high-quality 420J2 Stainless Steel Plate Sheet Metal Fabrication Parts designed for industrial and commercial use. Our 420J2 Stainless Steel parts offer a unique combination of durability, corrosion resistance, and versatility, making them ideal for a wide range of applications. These precision-engineered parts are crafted to meet the highest industry standards, ensuring that they are reliable and long-lasting. Whether you are in the automotive, aerospace, or construction industry, our 420J2 Stainless Steel parts will meet your needs with exceptional performance and quality.
Tianjin Emerson Metal Steel Products Co., Ltd. is proud to present 420J2 Stainless Steel Plate Sheet Metal Fabrication Parts under the EMERSONMETAL brand. As a professional manufacturer specializing in metal fabrication, we are committed to delivering high-quality, precision-engineered parts that meet the diverse needs of industrial and commercial sectors. With advanced production equipment and a strict quality control system, we ensure that every 420J2 stainless steel part combines durability, corrosion resistance, and versatility, making it a reliable choice for even the most demanding applications.
At the core of our products is 420J2 stainless steel, a martensitic stainless steel known for its unique combination of mechanical properties. Unlike austenitic stainless steels such as 304 or 316, 420J2 is characterized by its high carbon content (0.26-0.4%), which gives it exceptional hardness and wear resistance after heat treatment. This makes it stand out in applications requiring parts to withstand friction, impact, and heavy loads. Additionally, it offers good corrosion resistance, particularly in dry or moderately humid environments, ensuring long-term performance without easily rusting or degrading.
Our manufacturing process is designed to maximize the potential of 420J2 stainless steel. We utilize a full range of advanced equipment, including laser cutting machines, CNC bending machines, welding machines, polishing machines, and more, to achieve precise fabrication. Laser cutting ensures that parts are cut to exact dimensions with tolerances as tight as ±0.05mm, even for complex shapes, minimizing material waste and ensuring consistency. Bending and stamping are performed by skilled technicians using CNC-controlled equipment, which applies uniform force to avoid cracks or deformation, maintaining the material’s structural integrity. Welding is carried out using techniques that preserve the steel’s strength; we use low-heat input methods to prevent excessive grain growth in the heat-affected zone, ensuring welded joints are as strong as the base material.
Customization is a key part of our service. We accept OEM orders based on customer drawings, offering flexibility in thickness, width, and length to meet specific project requirements. Whether you need a single prototype for testing or large-volume production for industrial use, we can accommodate orders starting from 1 piece. Our quality control process is rigorous: from material sourcing (we select 420J2 stainless steel from reputable suppliers with consistent chemical composition) to final inspection (each part is tested for hardness, tensile strength, and surface finish), we ensure that every product meets the highest standards.
In summary, our 420J2 Stainless Steel Plate Sheet Metal Fabrication Parts leverage the material’s inherent strengths—high hardness, wear resistance, and moderate corrosion resistance—combined with precision manufacturing techniques. They are designed to perform in industries such as automotive, aerospace, tool making, and more, providing long-lasting durability that reduces maintenance costs and enhances operational efficiency.
OEM/ODM based on customer drawings; customizable thickness, width, and length
Brand
EMERSONMETAL
Minimum Order Quantity
1 piece
Key Features
High hardness, wear resistance, moderate corrosion resistance, precision fabrication
Application Scenarios
The unique properties of 420J2 stainless steel make our fabrication parts suitable for a wide range of industries where strength, wear resistance, and durability are critical:
Tool Making: 420J2 stainless steel is widely used in the production of cutting tools, molds, and blades. Its high hardness (up to 50 HRC after heat treatment) and wear resistance ensure that tools maintain their sharpness and shape even after repeated use. For example, industrial cutters and stamping molds made from our 420J2 parts can withstand continuous friction and pressure, extending their service life significantly compared to those made from ordinary steel.
Medical Devices: In the medical industry, 420J2 parts are used to manufacture surgical blades, needles, and instrument components. The material’s ability to be polished to a smooth, hygienic surface makes it easy to sterilize, meeting strict medical hygiene standards. Additionally, its strength ensures that medical instruments remain stable during procedures, reducing the risk of breakage.
Automotive Industry: 420J2 parts find applications in automotive components such as exhaust system brackets, valve parts, and transmission components. These parts need to withstand high temperatures, vibration, and wear, and 420J2’s combination of strength and corrosion resistance ensures reliable performance under these conditions.
Watch and Jewelry Manufacturing: The corrosion resistance and decorative potential of 420J2 make it suitable for watch cases, bracelets, and jewelry accessories. After polishing, it achieves a smooth, mirror-like finish that retains its luster over time, even with daily wear.
Construction and Industrial Equipment: In construction machinery and industrial equipment, 420J2 parts are used for hinges, shafts, and wear plates. These components are exposed to heavy loads and frequent movement, and 420J2’s wear resistance prevents premature failure, reducing maintenance downtime.
Frequently Asked Questions (FAQ)
Can 420J2 stainless steel be heat-treated to enhance its hardness? Yes, 420J2 is a heat-treatable martensitic stainless steel. Through processes such as quenching and tempering, its hardness can be increased to 50-55 HRC, significantly improving wear resistance. We offer optional heat treatment services based on customer requirements, which can be specified when placing an order. This is particularly useful for tool-making applications where maximum hardness is needed.
What is the corrosion resistance of 420J2 compared to 304 stainless steel? 420J2 offers moderate corrosion resistance, suitable for dry or moderately humid environments. However, it is less resistant to corrosion than 304 (which contains higher chromium and nickel). 304 performs better in highly humid, salty, or acidic environments. If your application involves exposure to saltwater or strong chemicals, we recommend 304; for dry environments requiring high hardness, 420J2 is more suitable. Our technical team can help you choose the right material based on your specific environment.
What is the lead time for customized 420J2 stainless steel parts? Lead time depends on part complexity, order quantity, and whether additional processes (e.g., heat treatment) are required. For simple laser-cut parts (1-50 pieces), delivery takes 3-5 working days. For complex parts requiring bending, welding, and heat treatment, or larger orders (500+ pieces), lead times may extend to 7-10 working days. We will confirm the exact timeline after evaluating your drawings and specifications.
What surface finishes are available for 420J2 parts? We offer various surface finishes, including:
Polishing: Achieves a smooth, mirror-like finish (Ra 0.8-1.6μm) for decorative or hygienic applications.
Sandblasting: Creates a matte, textured surface that hides minor scratches, suitable for industrial equipment.
Passivation: Enhances corrosion resistance by removing free iron from the surface.
Painting/Coating: Optional for additional corrosion protection or color coding. The choice of finish can be specified in your order.
Is 420J2 suitable for food contact applications? While 420J2 is not as commonly used for food contact as 304, it can be used in certain food processing tools (e.g., cutting blades) after thorough polishing and passivation. However, it is important to note that 420J2 may develop minor rust if not cleaned properly, so it is not recommended for long-term contact with acidic or salty foods. For strict food-grade applications, we suggest 304 or 316 stainless steel.
Choosing our 420J2 Stainless Steel Plate Sheet Metal Fabrication Parts means partnering with a manufacturer that understands the unique requirements of martensitic stainless steel processing. Our key advantages include:
Material Expertise: We specialize in 420J2 fabrication, ensuring optimal processing parameters (e.g., heat treatment, welding) to maximize the material’s properties.
Precision Manufacturing: Advanced CNC equipment and skilled technicians ensure parts meet tight tolerances, even for complex geometries.
Customization Flexibility: From small prototypes to large-volume orders, we adapt to your needs with customizable sizes and finishes.
Quality Assurance: Every part undergoes strict testing, including chemical composition checks, hardness tests, and dimensional inspections, to guarantee reliability.
Comprehensive Service: Our team provides pre-sales advice (material selection, design optimization) and after-sales support to address any issues.