SUS420J2 Stainless Steel

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Product information

Grade: SUS420J2 
SUS420J2 stainless steel is a high-strength and high-maintainability stainless material, featuring excellent corrosion resistance and cutting performance. It is widely used in the manufacturing of high-load and high-precision components such as tools, molds, and bearings.
Mechanical properties
‌Hardness‌: HRC 50-52, tensile strength ≥ 735 MPa, yield strength ≥ 440 MPa, elongation ≥ 18%
‌Toughness‌: Can withstand a certain degree of impact and vibration, suitable for manufacturing rotating components such as gears and bearings
Corrosion resistance
It performs stably in most corrosive media (such as seawater, sulfuric acid, nitric acid), but it is important to note that a chloride environment may cause local corrosion.
Heat treatment characteristics
‌Quenching‌: Heat to 980-1030℃, quench with water or oil to increase hardness
‌Tempering‌: Tempering at 200-300℃ to enhance toughness
Typical applications
‌Tools and molds‌: Manufacturing blades, tools, and stamping molds that require high wear resistance and precision tools 
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Product parameter

Chemical composition 
The chemical composition (by mass percentage) of SUS420J2 stainless steel is as follows:
‌Carbon (C): 0.26% - 0.40%
‌Chromium (Cr): 12.00% - 14.00%
‌Silicon (Si): ≤ 1.00%
‌Manganese (Mn): ≤ 1.00%
‌Phosphorus (P): ≤ 0.040%
‌Sulfur (S): ≤ 0.030%
‌Nickel (Ni): ≤ 0.60%
‌Iron (Fe): Balance
Key features:
‌High carbon design‌: The carbon content is significantly higher than that of similar materials (such as 0.16% - 0.25% for SUS420J1), enhancing quenching and hardness, but requires fine heat treatment to avoid brittleness
‌Chromium element dominance‌: The high chromium content (12% - 14%) gives the material corrosion resistance in oxidative environments, forming a passivation film to protect the base
‌Strict impurity control‌: The sulfur and phosphorus contents are extremely low, ensuring the material's toughness and stability

Product display

COMPANY PROFILE




Shiyu Metal Material Technology Co., Ltd. is a collection of procurement, processing, agent, sales, logistics, warehousing in one of the enterprises, the company has a large-scale spot supply base in China, with domestic and foreign large steel mills and suppliers to maintain good relations of cooperation, with a full range of multi-channel procurement resources.
Shiyu Metal main products: nickel base alloy, Hastelloy, super austenitic stainless steel, duplex stainless steel, cobalt base alloy, pure nickel, titanium and titanium alloy, heat resistant, corrosion resistant alloy and other kinds of steel, a large number of product categories, can meet the size and thickness customization, prefabrication and other diversified needs.
The company has ISO9001 quality certification, the company's product standards include: the United States (UNS) ASTM /ASME, AMS, German DIN/EN, Japan (SUS) JIS and other standards supply, provide the original material certificate. We can supply according to the standards and technical requirements provided by customers to ensure that the goods and specifications are complete to meet the needs of various merchants. From raw materials to finished products, all go through three quality inspection to ensure the qualified rate of finished products. Shiyu Metal strives for perfection in every detail to ensure that the quality of products in different countries and regions around the world can meet international standards. Shiyu Metal has established a good strategic cooperative relationship with the world famous steel mills such as HAYNES, ATI, SPECIALMETALS, VDM, OUTOKUMPU, Japan Metallurgy, Nippon Steel, and Datong Special Steel.
The products supplied by Shiyu Metal are widely used in nuclear power, petrochemical, mechanical engineering, precision processing, aerospace, electronic instruments, medical equipment, automobile manufacturing, environmental protection, wind power application, seawater desalination, shipbuilding industry, paper making machinery, mining engineering, cement manufacturing, metallurgical manufacturing, corrosion resistant environment field, high temperature environment field, mold field, etc. It is a global high-quality supplier of special steel materials.
Shiyu Metal Material Technology Co., Ltd. is committed to the purchase, agent and sales of special steel, and has a perfect special steel sales management system and product quality supervision system. The company has been adhering to the "integrity, innovation, responsibility, win-win" business philosophy, adhere to the "quality first, customer first" service purpose, to provide customers with quality services and high-quality steel products. Shiyu Metal actively participates in the development of domestic steel industry ecology, and is willing to contribute to the development of national special steel.



ENTERPRISE ADVANTAGE




SERVICE

From steel procurement, processing, logistics, warehousing, 
Shiyu Metal has a perfect management system, tailor-made solutions for each customer, strictly control each link, to ensure safe, efficient and accurate product delivery to customers;




RESOURCE

Shiyu Metal maintains good cooperative relations with medium and large steel mills and suppliers at home and abroad, 

and has established good strategic cooperative relations with world famous steel mills such as the United States, Germany, Finland and Jap.




SCALE

Shiyu Metal set procurement, processing, agency, sales, logistics, 

warehousing in one, can provide customers with steel products procurement, processing, logistics and other one-stop services.




PRODUCT

Shiyu Metal operates a wide range of steel products, can provide customers with product size and width customization, prefabrication and other services, perfect product quality supervision system, to ensure high standards of product quality, high quality.