What is stainless steel? Stainless steel is the common name for corrosion resistance steel. Stainless steels have about 10.5% chromium. Chromium reacts with the oxygen in the air to form a complex chrome-oxide surface layer. This prevents oxygen from “staining” or rusting the surface. Stainless steel contains iron, chromium, manganese, silicon, carbon and in many cases, significant amounts of nickel and molybdenum. These elements react with oxygen from water and air to form a very thin, stable film that consists of such corrosion products as metal oxides and hydroxides. Chrome gives the stainless steel its luster & durability, while the nickel is for the hardness & strength. No wonder – our stainless steel knife is worn away by daily use but will still remain stainless. Furthermore, stainless steel is fully recyclable.
We will talk about 3 stainless steel fabrication processes:
Work hardening is the process of strengthening material through deformation. Relative to other varieties of steel, stainless steel work hardens quickly, although the exact rate depends on the specific grade of the alloy.
Machining Stainless Steel:
Steel grades numbers 303, 430, 410 and 416 reach a resistant point to chipping when alloyed with manganese sulfide. If you are looking at fabricating stainless steel, here are some tips that help with machining this alloy:
- Apply coolants or lubricants to the equipment
- Use large tools to help dissipate heat
- Maintain light cuts and constant feeds
- Use chip breakers to deflect debris
- Select a machine tool that reduces vibration
- Keep the cutting edge sharp at all times
Welding stainless steel:
- Austenitic Stainless Steel: This Stainless Steel is well-suited for welding purposes. Chromium-nickel-iron alloys with 16-26% chromium, 6-22% nickel (Ni), it’s the most commonly used grade or composition.
- Martensitic Stainless Steel: This Stainless Steel grades are also good options for welding, but may be prone to cracking. This is strong and hard, but is brittle and difficult to form and weld. Chromium-iron alloys with 10.5-17% chromium and carefully controlled carbon content harden able by quenching (quickly cooled in water or oil) and tempering (heated then cooled). It has magnetic properties. It is commonly used in knives.
- Ferritic stainless steel: This is relatively less suitable for welding, some stabilized ferritic grades, such as Grade 409, may be appropriate for certain projects. Chromium-iron alloys with 17-27% chromium and low carbon content, with magnetic properties. Kitchen utensils belong to this category.
- Duplex: this set of grades works well for low thermal expansion and is welding efficient.
Stainless steel can be recycled 100%. Corrosion is generally caused by contaminants settling on the surface of the stainless steel. Stainless does not “rust” as you think of regular steel rusting with a red oxide on the surface that flakes off.
Look for the manufacturer that offers several types of stainless steel fabrication. This can make it easy for you to carry out selection process. Online search is the best alternative that can help you to find the best quality of stainless steel fabrication.