ENGINEERING MATERIAL

Stainless Steel Alloys

The definitive choice for corrosion resistance and durability. Stainless steel alloys offer a powerful combination of high strength, chemical resistance, and a clean, aesthetic appeal for demanding applications.

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A complex part machined from 316L stainless steel, highlighting its corrosion resistance

The Power of Passivation

Stainless steel is a family of iron-based alloys that contain a minimum of 10.5% chromium. It is this chromium content that reacts with oxygen to form a thin, invisible, and self-healing **passive layer** on the surface of the steel. This layer is what gives stainless steel its famous "stainless" quality and exceptional resistance to rust and corrosion.

High Corrosion Resistance

Resists rust and various forms of corrosion, particularly in wet environments and when exposed to many chemicals.

Excellent Strength & Durability

Offers good mechanical properties, making it suitable for structural components and high-wear applications.

Hygienic & Aesthetic

Easy to clean and maintain, making it ideal for food processing and medical applications. It also has a premium, modern appearance.

Common Stainless Steel Grades We Work With

Austenitic Stainless Steels (300 Series)

These are the most common type, known for their excellent corrosion resistance, ductility, and formability. They are generally non-magnetic.

303 Stainless Steel: A "free-machining" grade with added sulfur, making it much easier to CNC machine than 304 or 316. Ideal for parts requiring high volumes of machining.
304/304L Stainless Steel: The most widely used grade. Offers good corrosion resistance and weldability. "L" indicates lower carbon content for improved weldability. Used for general hardware, kitchen equipment, and architectural components.
316/316L Stainless Steel: Contains molybdenum, which dramatically improves its resistance to pitting and crevice corrosion, especially in chloride-rich (saltwater) or acidic environments. The standard for marine, medical, and chemical processing applications.

Martensitic & Precipitation Hardening Steels

These grades offer very high strength, often achievable through heat treatment. They are typically magnetic.

17-4 PH Stainless Steel: A chromium-nickel-copper precipitation-hardening stainless steel. It offers a unique combination of high strength, good corrosion resistance, and excellent toughness, even at high temperatures. Its properties can be precisely controlled through various heat treatment conditions. Used in aerospace, chemical, and medical industries.

Stainless Steel Alloys FAQ

Does stainless steel rust?

While highly resistant, "stainless" doesn't mean "stain-proof." If the passive layer is damaged (e.g., by mechanical abrasion, embedded iron particles, or exposure to harsh chemicals without proper cleaning), stainless steel can still corrode. Proper handling and passivation are important.

Can stainless steel be welded?

Yes, most common grades like 304L and 316L are highly weldable. Proper welding techniques and filler metals are important to maintain corrosion resistance in the weld area. Grades like 303 are not recommended for welding due to their sulfur content.