
Martensitic Stainless Steel
What is Martensitic Stainless Steel?
Martensitic stainless steel is a high-strength, corrosion-resistant alloy known for its exceptional hardness, wear resistance, and toughness. Unlike other stainless steels, martensitic grades can be heat-treated to achieve superior mechanical properties, making them ideal for applications requiring durability and precision performance.
Composed primarily of iron, chromium, and carbon, martensitic stainless steel offers moderate corrosion resistance and is commonly used in industries such as aerospace, automotive, medical, and industrial manufacturing, where high strength and wear resistance are critical.

Key Properties
and Advantages
1. High Strength & Hardness
Martensitic stainless steel is known for its superior hardness and strength, making it suitable for applications requiring wear resistance and structural integrity.
2. Heat Treatable for Enhanced Performance
Unlike austenitic stainless steel, martensitic grades can be hardened and tempered, allowing for customized mechanical properties based on application needs.
3. Good Corrosion RESISTANCE
While not as corrosion-resistant as austenitic or duplex stainless steels, martensitic stainless steel still provides good resistance to oxidation and mild corrosive environments, especially when properly treated.
4. ExcellenT Wear and Abrasion Resistance
With its high hardness, martensitic stainless steel performs well in high-wear environments, making it ideal for cutting tools, valves, bearings, and turbine blades.
Materials We Offer
410 Stainless Steel (UNS S41000)
A general-purpose martensitic stainless steel offering good corrosion resistance, high strength, and excellent wear resistance. Commonly used in cutlery, pumps, valves, and industrial applications.
420 Stainless Steel (UNS S42000)
Known for its high hardness and polishability, 420 stainless steel is used in surgical instruments, cutlery, and high-wear components requiring exceptional edge retention and durability.
431 Stainless Steel (UNS S43100)
Offers improved corrosion resistance and toughness over 410 and 420 grades. Often used in marine applications, aerospace components, and high-stress mechanical parts.
440C Stainless Steel (UNS S44004)
A high-carbon, high-strength martensitic stainless steel with excellent wear and abrasion resistance, commonly found in bearings, knives, and industrial tooling.

Why Choose System 22?
At System22, we specialize in high-performance stainless steels, including Martensitic Stainless Steel, to deliver fasteners and components that offer exceptional strength, hardness, and wear resistance. Our expertise ensures that you receive materials engineered for demanding applications across aerospace, automotive, medical, and industrial manufacturing industries.
Whether you need standard fasteners or precision-engineered solutions, our team works closely with you to ensure every component meets the highest industry standards. By leveraging advanced heat-treatment processes and precision machining, we maximize the performance, durability, and reliability of our products, providing you with cost-effective solutions tailored to your needs.
Get it Fast!
Same day
shipping
Emergency
orders
After hours & weekend shipping
Rush
Manufacturing
Ready to learn more about how Martensitic Stainless Steel can benefit your next project? Contact System22 today to discuss your needs with one of our specialists. We're here to provide the information and support you need to make informed material choices.
Let us help you find the perfect solution for your fasteners and components. With System22, you're choosing exceptional strength, durability, and precision-engineered performance.