420 stainless steel round bar

420 stainless steel round bar (UNS S42000) is an exceptional choice for applications that require outstanding hardness and good corrosion resistance. This hardenable steel contains a minimum of 12% chromium, providing sufficient corrosion resistance properties. Compared to 410 stainless steel, 420 features a higher carbon content, making it ideal for achieving hardness and high strength. Hardened through heat treatment, 420 stainless steel exhibits excellent ductility in its annealed state and superior corrosion resistance when polished, ground, or hardened. With a hardness rating of 50HRC, it is the hardest among all steel grades.

Martensitic stainless steels, like 420, are specifically designed for high levels of hardness. While austenitic steels excel in corrosion resistance at high temperatures, the corrosion resistance of martensitic grades is enhanced through processes such as hardening, grinding, and polishing. The 420 stainless steel round bar finds applications in various industries, including:

• Shear blades
• Hand tools
• Cutlery
• Surgical and dental instruments
• Knife blades
• Scissors
• Needle valves
• Pump shafts
• Straight edges
• Gauges
• Ball bearings
• Pivots

However, it is important to note that 420 stainless steels are not typically suitable for applications exceeding 800°F (427°C) due to potential loss of corrosion resistance and quick hardening, which complicates welding. For optimal results, welding should be performed after preheating to 300°F to 400°F, followed by post-weld tempering for 2 hours. While machinability can be challenging with tougher chip buildup, 420 can be easily machined in its annealed state. If higher machinability is required, considering alternatives like 416, a free-machining steel grade, may be advisable.

Benefits of Using 420 Stainless Steel Round Bar

420 stainless steel round bar offers numerous advantages, including high corrosion resistance, lightweight properties, and a shiny, polished surface. Its durability and strength make it a popular choice in the construction industry, while the automotive industry frequently utilizes it for exhaust systems, radiators, and engine components.

As a grade A stainless steel, 420 round bar is known for its high purity, making it easier to machine and weld without concerns of defects. The high chromium content contributes to its rust resistance and enhances its ability to withstand heat, cold, and acidity compared to other metals.

Stainless steel round bars, also referred to as stainless steel bars or rounds, are composed of an alloy containing chromium and nickel. This makes the 420 stainless steel round bar a reliable choice for various industries, including food and beverage, chemicals, and pharmaceuticals.

420 Stainless Steel Round Bar Suppliers

The demand for 420 stainless steel round bars has surged due to their excellent mechanical properties. At PGB, we pride ourselves on being one of the leading suppliers of 420 stainless steel round bars. We offer a wide variety of products and have been dedicated to serving our customers with high-quality round bar stocks.

PGB is recognized as one of the top suppliers and manufacturers of premium 420 stainless steel round bars and flat bars. Our extensive range of products is suitable for construction, manufacturing, and various other industries. We provide customers with high-quality 420 stainless steel round bars in various sizes at competitive prices, ensuring that quality is never compromised.