AISI 420 Stainless Steel Tube SUS420 1.4021

420 Stainless Steel Pipe/Tube Details

Overview

420 stainless steel pipe/tube is a martensitic stainless steel known for its high hardness, moderate corrosion resistance, and good wear resistance. It is primarily used in applications where hardness and strength are important, and it is often utilized in situations where components must resist wear and maintain sharp edges.

Key Characteristics

High Hardness: Offers excellent hardness and can be hardened to high levels through heat treatment, making it suitable for applications requiring durable and sharp components.

Moderate Corrosion Resistance: Provides reasonable resistance to corrosion, particularly in mildly corrosive environments, though not as high as austenitic stainless steels.

Wear Resistance: Good resistance to wear and abrasion, making it suitable for applications involving friction and impact.

Heat Treatment: Can be heat-treated to achieve various hardness levels, enhancing its performance for specific applications.

Weldability: Can be welded using standard techniques; however, preheating and post-weld heat treatment may be necessary to avoid issues such as cracking and ensure weld integrity.

Formability: Less formable compared to austenitic grades due to its higher hardness, which can make it more challenging to shape and machine.

Chemical Composition

Carbon (C): 0.15-0.40%

Manganese (Mn): 1.00%

Silicon (Si): ≤ 1.00%

Phosphorus (P): ≤ 0.040%

Sulfur (S): ≤ 0.030%

Chromium (Cr): 12.00-14.00%

Nickel (Ni): ≤ 0.75%

Common Applications

Cutting Tools: Used in the manufacture of cutting tools, blades, and dies due to its ability to hold a sharp edge and withstand wear.

Industrial Equipment: Applied in industrial equipment and machinery where high hardness and durability are required.

Medical Instruments: Suitable for medical instruments and surgical tools where sharpness and corrosion resistance are important.

Valve Components: Employed in valve components and other parts where strength and resistance to wear are necessary.

Advantages

High Hardness: Provides excellent hardness and edge retention, making it suitable for demanding applications that require sharpness and durability.

Good Wear Resistance: Offers reliable performance in applications involving friction and abrasion, extending the life of components.

Heat Treatable: Can be heat-treated to achieve desired hardness and mechanical properties, allowing for customization based on specific needs.

Cost-Effective: Provides a balance of performance and cost, making it a practical choice for various industrial and commercial applications.

Summary

420 stainless steel pipe/tube is a martensitic stainless steel known for its high hardness, moderate corrosion resistance, and good wear resistance. Its chemical composition and heat treatment capabilities make it suitable for applications such as cutting tools, industrial equipment, medical instruments, and valve components. With its combination of durability, hardness, and cost-effectiveness, 420 stainless steel is a reliable choice for applications requiring sharpness and resistance to wear.

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