430 Quality Stainless Steel Properties and Usage Areas;
Grade 430 stainless steel, which is considered as a ferritic steel group, is a type of stainless steel with low carbon and chromium content. They do not contain nickel and molybdenum in their chemical content, so they are more affordable than 300 series stainless steels. They can provide a good surface appearance on the materials they are used. Since they do not contain nickel, they can become magnetized. The thermal expansion rate is low. It has excellent tensile and oxidation resistance.
Usage areas
It is frequently used in heat-resistant tools, three-bottomed teapot bases, gas nozzles, household appliances, tub linings, building materials, bolts and nuts, rods, sieves.
Although the resistance of this quality stainless steel against corrosion is not very high, it is often used for decoration purposes. It is recommended to use the material with a price advantage only in environments where corrosion conditions are low, and it should not be forgotten that it can corrode in a humid environment.
420 Quality Stainless Steel Properties and Usage Areas;
Grade 420 stainless steel is a martensitic stainless steel grade with a high chromium content. It is widely used in jewelry and watchmaking because of its high strength and low price; Also used for surgical instruments and knives. The most common application for this type of steel is for watch bands that are exposed to both moisture and air, so they need to be durable enough to withstand this environment without rusting or tarnishing. 420 Stainless Steel is the highest grade of stainless steel available for commercial use. It is a special type of steel used in high quality blades.
Typical properties of 420 quality stainless steels;
• It is a very suitable material for polishing.
• The tensile strength of 420 quality stainless steels is quite high, especially after heat treatment.
• In its annealed state, its machinability is quite good and in this state it is suitable for machining, no chip wrapping occurs.
• Very high surface hardness can be obtained after heat treatment. Its surface structure is very good compared to other steels.
• Its mechanical properties are very good.
Usage areas;
420 grade stainless steel is often used in the machinery industry, petroleum and petrochemical industries, food and food manufacturing plants, decorations, transportation, shafts, pistons and valves. In addition, kitchen tools and utensils can be made with this quality of stainless steel. It is quite a good material for the manufacture of knives.
304 Quality Stainless Steel Features and Usage Areas;
The most preferred model of stainless steels is 304 quality stainless steel. This grade, which accounts for 50% of all stainless steel production, is a must for the stainless steel industry.
304 grade stainless steel contains between 15% and 20% chromium and between 2% and 10% nickel. Since it has much less electrical conductivity than other stainless steels, it does not have magnetic properties. 304 stainless steel belongs to the austenitic stainless steel group.
The reason why 304 stainless steel is preferred more than other models is that it is easy to obtain, easy to shape and easily adapts during welding.
The properties of 304 quality stainless steel, which is one of the most widely used steel types in the market;
• Not hardened by heat treatment.
• Corrosion resistance is quite good. It is highly resistant to pressures that may occur depending on the sectors used.
• It is resistant to temperature. Since it is more suitable for daily use, its heat resistance is adjusted accordingly.
• Provides strength even at low temperatures.
• Its mechanical properties are quite good.
• As in deep drawing and bending, the drawability of 304 is also very good.
• Weldability; 304 quality stainless steel is a very good choice for situations that do not require a lot of welding. 304 quality stainless steel does not require annealing after welding and is suitable for all standard welding techniques.
• Machinability: The machinability of 304 quality stainless steel is quite low compared to other types of stainless steel. They are not efficient in terms of machinability, as good results are obtained at slow speeds and heavy feeding.
• Forgeability: 304 quality stainless steel has an average malleability rate like other carbon steels. This stainless steel, which is produced for daily use, should not be preferred in situations with high metal forging rates.
Usage areas;
304 Quality Stainless Steel is widely used in kitchen utensils, sinks, household appliances, industrial kitchens, internal pipes, hot water boilers, bath tubs, various boilers, auto parts (wiper, muffler, etc.), medical instruments, construction materials, chemical plants, milk. It is used in various vehicles and ship parts in the food industry.
304L Quality Stainless Steel Properties and Usage Areas;
304L Quality Stainless Steel Properties and Usage Areas; 304L quality stainless steels, which are the low carbon version of 304 quality stainless steel;
• 304L quality stainless steel is stainless steel that contains less carbon and less nickel than 304 stainless steel.
• The machinability of 304L quality stainless steel is more difficult than 304 quality stainless steels, and its mechanical properties are lower than 304 quality stainless steels.
• High flexibility due to low carbon. It has better formability and weldability compared to 304. It is generally used below 400°C. The material has corrosion resistance up to 700°C, but its corrosion resistance is reduced in aqueous environments.
• Good resistance to nitric acid.
• It shows excellent ability in all welding methods.
Usage areas
It is widely used in machinery and equipment used in the chemical industry, in the coal and petroleum industry where high intergranular corrosion resistance is needed, in construction materials, parts of heat-resistant tools and parts that are difficult to heat treatment. It is suitable for storage tanks and boilers. It is used in the paper industry, chemical, petrochemical industry and in the production of heat exchangers.
316L Quality Stainless Steel Features and Usage Areas;
316L stainless steel is an austenitic alloy, meaning it is non-magnetic and has high corrosion resistance. It also has a low carbon content, which means it won't rust. The "L" at the end of 316L indicates that this type of stainless steel has a low carbon content. Because nickel improves corrosion resistance, 316L has superior resistance to pitting and crevice corrosion while maintaining good formability and weldability. It is widely used in industry due to its ability to withstand high temperatures and withstand corrosive chemicals.
Use of 316L Stainless Steel in Surgery; 316L Stainless Steel is a relatively new addition to the stainless steel family, but has quickly become one of the most popular choices for industrial applications. It can be used to make surgical instruments. This type of stainless steel has excellent corrosion resistance properties. This makes it suitable for use in harsh environments such as hospitals or medical areas.
Usage areas
Because it is similar to 316 grade stainless steels and is resistant to caustic solutions, it is still widely used in the chemical industry, in the manufacture of surgical instruments in medicine and in implant production, in the food industries, in the manufacture of pharmaceuticals, and in 316L orthopedic implants, especially due to the efforts to prevent nickel release into the body. It is also used in jewelery and other applications where a corrosion resistant material is needed, in industrial applications such as the Aerospace, automotive, oil and gas industries.
316 Quality Stainless Steel Features and Usage Areas;
316 stainless steels consist of 16% chromium (Cr) and 10% nickel (Ni). In addition to these, it contains 2% molybdenum (Mo). It is a stainless steel quality that we can think of as obtained by adding molybdenum and more nickel into 304 quality stainless steel. Among the most distinctive features of 316 quality stainless steels is the extra corrosion resistance provided by molybdenum. It also has resistance to high temperatures.
Typical properties of 316 class Stainless Steels;
• Corrosion resistance is excellent.
• Pitting corrosion resistance is also quite good.
• It is highly resistant to temperature with the addition of Mo.
• Tensile strength is much better when compared to 304 quality stainless steels.
• The corrosion resistance of 316 quality stainless steels is very good even in harsh conditions (sea water, acidic liquids, etc.).
The most important feature of the 316 class stainless steel product is that it has a very durable and stronger structure than normal stainless steel products. Therefore, it can work under more difficult conditions and can work with more dangerous liquids (highly corrosive liquids) used in industrial applications. It is sustainable in the best working rhythm without deteriorating at very high temperatures such as 6000C. The most important features of this stainless steel class are; in environments where no other stainless steel can work, i.e. steam boilers, heat-resistant heat exchangers, fruit juice and liquor production units, corrosive liquid tanks, storage tanks, chemical and petrochemical industry, food plants, paint industry, mining areas, sea water equipment, equipment used in chemicals , acetic acid, fertilizer, paper industry, nuclear engineering, photography and food industry, seaside constructions, ropes, rods, bolts and nuts are also widely used.
It is also widely used in the jewelry and jewelery industry. It has almost equivalent corrosion resistance to Titanium in the galvanic series. It is colloquially known as "surgical steel" because it does not cause the most common allergic reaction that people encounter. This is because it does not contain high nickel content. Silver jewelry will tarnish over time due to atmospheric sulfur if Rhodium plating is not applied, but 316L Stainless steel has better corrosion resistance than Silver.