Description of Stainless Steel Plate Surface

About Daxun Stainless Steel Plate

Daxun International embarked on its illustrious stainless steel journey in 2003. With over two decades of dynamic growth and groundbreaking innovation, it has risen to the pinnacle of the industry, firmly establishing its esteemed reputation in stainless steel materials and advanced processing.

With an illustrious history in international business, Daxun's 2023 export revenue surged past US$100 million. By strategically establishing three export service bases in China, the company has forged robust alliances with engineering firms, steel mills, and global trading entities. This extensive collaborative network continually enhances service capabilities and ambitiously expands Daxun's footprint in overseas markets.

Comprehensive Stainless Steel Plate Service

Daxun International redefines stainless steel services with its innovative 'supermarket' model, partnering globally with renowned steel mills. With an impressive inventory of 160,000 tons-comprising 20,000 tons of diverse metals, including ordinary stainless steel plates, duplex steel plates, nickel-based alloy plates, and heat-resistant steel plates-Daxun ensures reliability, unparalleled quality, and strict adherence to specifications and delivery standards.

Advanced Processing Capabilities

Equipped with cutting-edge steel processing equipment and professional testing centers, Daxun excels in cutting, grinding, forming, beveling, welding, heat treatment, machining, spraying, and beyond. Serving over 30 diverse industries-including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/biofermentation, petrochemicals, and energy equipment-Daxun's expertise is unrivaled.

Diverse and Reliable Services

Daxun's extensive service experience is reflected in its wide range of offerings. With a client base exceeding 70,000 across 30 industries and 30,000+ active customers, Daxun's industry recognition and service excellence are well-established.

Efficient and High-Quality

Daxun guarantees prompt and efficient delivery of stainless steel products through an integrated system that merges information flow, logistics, and capital flow. Real-time order data seamlessly links to the logistics system, ensuring swift delivery. Strategically positioned processing centers near highways, rivers, and oceans facilitate efficient scheduling, rapid response, and smooth transportation.

Quality Commitment

Dedicated to quality and integrity, Daxun introduces 'Performance Excellence Management' and adopts 'PDCA+Lean' management principles, ensuring 'Daxun = assured quality' becomes synonymous with trust. The implementation of a sophisticated ERP system allows full traceability of each steel plate, reinforcing the industry's anti-counterfeiting efforts.

Save Costs for Customers

Daxun prioritizes time, material, and stress savings for customers, ultimately reducing costs. By offering cost-optimized material recommendations and streamlined processing services, Daxun enhances material utilization. Continuous lean improvement activities enable Daxun to minimize its own costs and pass on savings to customers. Additionally, a comprehensive product traceability system and prompt resolution of quality concerns provide customers with unparalleled peace of mind.

General Properties
The Alloy 420 Stainless Steel Plate stands as a robust martensitic stainless steel bar, an enhanced variant of Alloy 410. With a minimum of 12% chromium, it ensures valuable corrosion resistance. Compared to Alloy 410, the 420 version integrates additional carbon to significantly boost its strength and hardness. Post-annealing, it exhibits excellent ductility but can be hardened to a formidable Rockwell hardness of 50 HRC, marking it as the hardest among the 12% chromium grades. While its hardening characteristics make welding uncommon, it remains a possibility. Developed primarily for high hardness, martensitic stainless steels like Alloy 420 may sacrifice certain other properties. Its corrosion resistance, although substantial, falls short of typical austenitic grades and is constrained by a limited operational range due to reduced ductility at sub-zero temperatures and diminished strength from over-tempering at high temperatures. Optimal corrosion resistance is achieved when the metal is hardened and its surface is polished or ground.
Specifications: UNS S42000.
Applications:
The 420 stainless steel finds extensive use in scenarios demanding superior corrosion resistance coupled with hardness. Operating at temperatures above 800°F (427°C) is uncommon due to rapid hardening and compromised corrosion resistance. Typical applications include:
Knives
Blades
Surgical instruments
Needle valves
Shear blades
Scissors
Hand tools
Corrosion resistance:
Less resistant than austenitic grades and 17% chromium ferritic alloys.
Exhibits good resistance to atmospheric conditions, food environments, fresh water, and mild acids when in a hardened state.
Corrosion resistance decreases when annealed.
Maintains a smooth surface finish.
Heat resistance:
Not advisable for use beyond tempering temperatures due to loss of mechanical properties.
Scaling occurs around 1202°F (650°C).
Machinability:
Produces hard, elongated chip buildup.
Comparable to machining certain high-carbon tool steels.
Welding:
Welding is atypical due to its air-hardening nature.
Preheat to 300-400°F prior to welding.
Temper for 2 hours post-welding.
Hot Working:
A gradual increase to 1400°F followed by reaching 2000-2200°F is recommended.
Cool slowly post-furnace work to prevent cracking.
Reheating is necessary to keep the working temperature above 1600°F.
Cold Working:
Capable of enduring only mild cold working.
More aggressive forming efforts will lead to cracking.
Annealing:
Perform annealing at 1550-1650°F (843-900°C).
Allow the furnace to cool slowly.
Tempering:
Temper between 300-400°F.
Air cool to achieve maximum hardness and corrosion resistance.
Hardening:
Soak at 1850-1950°F and quench in hot oil.