Updated text about AISI 304 steel:
AISI 304 steel is one of the most widely used stainless steel alloys worldwide. Its popularity is due to:
- Unique chemical composition: This provides AISI 304 steel with high corrosion resistance, wear resistance, strength, ductility, good weldability, and ease of processing.
- Affordable cost: AISI 304 is a relatively inexpensive stainless steel, making it economically viable for many applications.
- High performance characteristics: Thanks to its chemical composition, AISI 304 demonstrates durability and reliability in various conditions.
AISI marking system: The first digit "3" indicates that the steel belongs to the austenitic stainless steel group. The remaining two digits ("04") are the порядковый номер марки в этой категории.
Unlike ГОСТ, where alphanumeric marking can denote the chemical composition or technical properties of the alloy, the AISI designation is simply an abbreviation for the American Iron and Steel Institute. This institute has developed standards for various materials, including AISI 304 stainless steel.
AISI 304 applications: Due to its combination of properties, AISI 304 is widely used in various industries, construction, medicine, food production, and other areas.
Foreign equivalents of AISI 304 steel (analogue 08Х18Н10)
| Country | Analogue |
|---|---|
| USA | AISI 304, 304H, S30400 |
| Germany | 1.4301, 1.5301, X5CrNi18-10, X5CrNi18-9, X6CrNi18-9 |
| Japan | SUS304 |
| France | 304F00, X5CrNi18-10, Z4CN19-10FF, Z5CN17-08, Z6CN18-09, Z7CN18-09 |
| England | 304S11, 304S15, 304S16, 304S17, 304S18, 304S25, 304S31 |
| European Union | 1.4301, X5CrNi18-10, X6CrNi18-10 |
| Italy | X3CrNi18-10, X5CrNi18-10 |
| Spain | F.3504, F.3551, X5CrNi18-10 |
| China | 0Cr19Ni9, OCr18Ni9 |
| Sweden | 2332, 2333 |
| Poland | 0H18N9 |
| Czech Republic | 17240 |
| Austria | X5CrNi18-10OS |
| Ukraine | 08Х18Н10 |
AISI 304 stainless steel is one of the most widely used stainless steel alloys worldwide. It is favored for its:
- Excellent corrosion resistance: AISI 304 resists oxidation and corrosion in a variety of environments, making it ideal for applications where durability is critical.
- High strength and ductility: AISI 304 is strong and can withstand significant loads without deforming or breaking. It is also ductile, which means it can be formed into complex shapes without cracking.
- Weldability: AISI 304 is easily welded using a variety of methods, making it ideal for fabrication and construction.
- Versatility: AISI 304 can be used in a wide range of applications, from food processing to automotive to medical.
- Cost-effectiveness: AISI 304 is relatively inexpensive compared to other stainless steel alloys, making it a cost-effective choice for many applications.
AISI 304 is an austenitic stainless steel, which means it contains:
- Chromium (18-20%): Chromium provides corrosion resistance by forming a protective oxide layer on the surface of the steel.
- Nickel (8-10.5%): Nickel enhances strength, ductility, and toughness.
- Iron (balance): Iron provides the base for the alloy.
AISI 304 is available in a variety of forms, including:
- Sheet: Sheet is the most common form of AISI 304 and is used for a wide range of applications, such as cladding, roofing, and ducting.
- Plate: Plate is thicker than sheet and is used for applications where strength and durability are critical, such as in pressure vessels and tanks.
- Bar: Bar is used for structural applications, such as in reinforcement and beams.
- Tube: Tube is used for a variety of applications, such as in piping and heat exchangers.
AISI 304 is a versatile and durable material that is well-suited for a wide range of applications. It is a cost-effective choice for many applications where corrosion resistance, strength, and ductility are important.
Some common applications of AISI 304 include:
- Food processing: AISI 304 is used in food processing equipment because it is resistant to corrosion from food acids and is easy to clean.
- Chemical processing: AISI 304 is used in chemical processing equipment because it is resistant to corrosion from a variety of chemicals.
- Automotive: AISI 304 is used in automotive applications, such as exhaust systems and trim, because it is resistant to corrosion and high temperatures.
- Medical: AISI 304 is used in medical devices, such as surgical instruments and implants, because it is resistant to corrosion and body fluids.
- Construction: AISI 304 is used in construction applications, such as cladding, roofing, and ducting, because it is resistant to corrosion and weather.
AISI 304 is a valuable material for many applications due to its combination of properties. It is strong, durable, corrosion-resistant, and easy to fabricate. If you are looking for a versatile and reliable material for your next project, AISI 304 is a good option to consider.
Mechanical Properties of AISI 304 Steel (Analogue 08Х18Н10) at T=20°C
| Product | Size | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation at Break (%) | Reduction of Area (%) | Charpy Impact Energy (kJ/m²) |
|---|---|---|---|---|---|---|
| Stainless Steel Bar | Ø 60 | 470 | 196 | 40 | 55 | - |
| Stainless Steel Sheet | - | 510 | 45 | - | - | - |
| Cold Rolled Stainless Steel Sheet | - | 740-930 | 25 | - | - | - |
| Stainless Steel Plate | - | 510 | 205 | 43 | - | - |
| Cold Worked Stainless Steel Pipes | - | 529 | 37 | - | - | - |