400系
400 Series Stainless Steel
Ferritic & martensitic stainless steel with good corrosion resistance, magnetic property and high‑temperature performance. Main grades: 430,410,420,440. Widely applied in kitchen appliances, hardware, auto parts, decorative panels and household utensils. Available in coils, sheets, strips with customized surface finishes.
Key Features

Technical Specifications
Grade1
Grade2
Grade3
Grade4
430: Home appliances, kitchen panels & decorative sheets
410: Fasteners, valves & general mechanical parts
420: Knives, scissors & surgical blades
440C: High‑hardness cutting tools & bearings
439 / 441: Automotive exhaust & heat‑resistant components
Case Study
Brazilian Miner Vale SA
23 large-scale ball mills, Ø5.5×8.8m
Wengfu Phosphate Mine Project Phase II in Saudi Arabia (Ma'aden)
6 wet grinding rod mills, Ø4.6×6.7m
Vedanta Project in South Africa
1 SAG mill, Ø8.5×5.5m
Laos Phonesack Group's KSO Gold Mine Project (83,000t/d)
6 SAG mills, Ø8.8×4.8m
Mongolian Erdenet Mining Corporation's Copper Mine Project (20,000t/d)
SAG mill, Ø9.75×4.88m
Full-process Solution for Stainless Steel Supply
Still struggling with uncontrollable quality, delivery delays, or poor communication in your stainless steel procurement? Look no further! What we are showcasing is not just products, but a mature Full-process Solution.
Why Choose Top source Metal Stainless Steel Products
- High cost-effectiveness
Top source Metal stainless steel products are widely recognized for their superior cost performance in the global market. We offer a full portfolio of 200, 300 and 400 series stainless steel sheets, coils and tubes, with an annual sales volume of 40,000 tons and 30,000 tons of ready stock. Backed by direct mill sourcing, optimized processing technology and deep industry expertise, we deliver consistently high quality at competitive prices for both bulk orders and customized requirements. - High quality & stable performance
Our products are produced in strict compliance with international and national standards, using premium raw materials from leading steel mills and state-of-the-art processing techniques. This ensures uniform material properties, precise dimensional tolerance and excellent durability, which can stably adapt to a wide range of industrial application scenarios. - High-efficiency service
Our service network covers all major regions around the world, staffed with a team of seasoned international trade professionals. We provide rapid response to customer demands, and offer full life cycle support including material consultation, customized processing, global logistics and after-sales service, to ensure smooth and efficient cooperation for every customer.