410 Stainless Steel: A Guide to Properties, Applications, and Supply 

410 Stainless Steel is a general-purpose martensitic stainless steel grade known for its exceptional combination of strength, hardness, and moderate corrosion resistance. Its composition, centered around 12% chromium, provides good resistance in mild atmospheric conditions, while its carbon content allows it to be hardened through heat treatment. This makes the alloy magnetic in all conditions and highly suitable for applications where high strength and wear resistance are critical engineering requirements. For industries that demand performance and durability, understanding the capabilities of AISI 410 is essential. 

As a leading material supplier, Nifty Alloys LLC provides comprehensive technical data to support your procurement decisions. This guide covers the chemical composition, mechanical properties, heat treatment procedures, and common industrial uses of 410 stainless steel, ensuring you have the precise information needed for your projects. Nifty Alloys LLC supplies 410 Stainless Steel bars, rods, and flats across the UAE and worldwide. 

What is 410 Stainless Steel? 

410 Stainless Steel (UNS S41000) is a hardenable, martensitic stainless steel. The term "martensitic" refers to its specific crystalline structure, which is achieved through a carefully controlled heat treatment process. This process, involving heating to a high temperature followed by rapid cooling (quenching), transforms the steel's internal structure to create a very hard and strong material. Following this, tempering can be applied to adjust the final balance of hardness and toughness. 

This grade offers a balanced profile of good corrosion resistance, high strength, and excellent wear resistance. Its properties make it a cost-effective choice for components subjected to mechanical stress and mild corrosive environments. Unlike austenitic grades like 304 or 316, 410 stainless steel is ferromagnetic, meaning it is magnetic. 

Its versatility is reflected in its wide range of applications, including manufacturing valves, turbine blades, fasteners, and pump shafts. The ability to tailor its mechanical properties through heat treatment makes it a dependable choice for engineers and designers. 

Key International Equivalents for Grade 410: 

• AISI: 410 
• UNS: S41000 
• EN: 1.4006 
• BS: 410S21 / 410S29 / 410S37 
• JIS: SUS410 

What is +QT650? 

The designation +QT650 refers to a specific heat treatment condition commonly applied to martensitic stainless steels such as 410. The “QT” stands for Quenched and Tempered, while “650” indicates the tempering temperature in degrees Celsius. 

In the +QT650 condition, the steel undergoes austenitizing (heating to a high temperature), followed by quenching (usually in oil or air) to induce a martensitic structure. Subsequently, tempering at 650°C optimizes the balance between strength and toughness. This treatment imparts: 

• A typical hardness range of 217–255 HB 
• Improved ductility, impact strength, and resistance to stress corrosion cracking 
• Consistent and predictable mechanical performance for demanding applications 

Common uses for 410 +QT650 include turbine blades, shafts, fasteners, pump rods, and other high-strength components subjected to cyclic loads or aggressive industrial environments. Its well-defined mechanical properties and reliability make it suitable for applications where both strength and resistance to corrosion are critical.