Many industries rely on stainless steel for a variety of applications. One particular type, 409 stainless steel, offers an array of beneficial properties that make it a great choice for many different applications. Let’s explore the properties and uses of 409 stainless steel in more detail.
What Forms is 409 Stainless Steel Available at Piping Mart?
- 409 Stainless Steel Pipes
- 409 Stainless Steel Tubing
- 409 Stainless Steel Bars
- 409 Stainless Steel Bolts
- 409 Stainless Steel Valves
- 409 Stainless Steel Screw
- 409 Stainless Steel Nuts
- 409 Stainless Steel Washer
- 409 Stainless Steel Stud Bolts
What is 409 Stainless Steel?
SS 409 is a ferritic grade of stainless steel that contains around 10.5% chromium by weight. This makes it highly resistant to corrosion from both acidic and alkaline solutions. It also offers other benefits, such as low cost, good ductility, and a high strength-to-weight ratio compared to other grades of stainless steel.
409 Stainless Steel Composition
409 stainless steel composition is an ideal fit for Inconel sheet applications, due to its combination of strength and corrosion resistance that can withstand harsh conditions. This type of steel contains iron, chromium, and titanium, plus small amounts of aluminum, silicon, and sulfur for additional strength. The result is a metal alloy that is capable of withstanding temperatures up to 800°C (1,472°F) and does not require a great deal of maintenance. Its low-cost production makes it an excellent choice for certain industrial needs.
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Ti |
|
|
409 |
min. max. |
– 0.08 |
– 1.00 |
– 1.00 |
– 0.045 |
– 0.045 |
10.5 11.75 |
– 0.5 |
6x C 0.75 |
409 Stainless Steel of Properties
- 409 Stainless Steel is one of the most popular chromium stainless steels.
- It has good corrosion resistance, heat resistance, and stress-corrosion cracking resistance.
- It is often used in automotive applications such as exhaust systems.
- It can be welded using all welding methods, but it is not recommended for use in severely corrosive environments.
- 409 Stainless Steel is available in a variety of forms, including sheet, plate, bar, and tube.
409 Stainless Steel Physical Properties
UNS S40900 is a popular choice when it comes to Inconel sheets, as it provides superior physical properties such as incredible strength, and corrosion and oxidation-resistant properties. This type of Inconel sheet has superior machinability, making it ideal for industrial applications. Despite its low cost and wide availability, 409 stainless steel has excellent resistance to corrosion and chemical environments and is often used in the food processing industry or applied in high-temperature situations thanks to its heat-resistant properties. These amazing qualities make it the perfect material for Inconel sheets that are increasingly being used across many industries.
|
Grade |
Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Coefficient of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat 0-100°C (J/kg.K) |
Electrical Resistivity (nΩ.m) |
|||
|
0-100°C |
0-315°C |
0-538°C |
at 100°C |
at 500°C |
|||||
|
409 |
7800 |
200 |
11.0 |
11.7 |
12.4 |
25.8 |
27.5 |
460 |
600 |
409 Stainless Steel Mechanical Properties
most often used to manufacture 409 Stainless Steel. This steel is known for displaying impressive mechanical properties such as malleability, tensile strength, fatigue resistance, elongation and corrosion resistance. Not only can it endure regular contact with various materials, but its commitment to tensile strength allows it to resist vibration shock loads and thermal shocks up to 1500° F. Due to these qualities as well as its low cost relative to other types of alloys, 409 has become one of the most popular stainless steel products for industrial purposes.
|
Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness |
|
|
Rockwell B (HR B) max |
Brinell (HB) max |
||||
|
409 |
450 |
240 |
25 |
75 |
131 |
409 Stainless Steel Equivalent
|
Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
||
|
BS |
En |
No |
Name |
||||
|
409 |
S40900 |
409S19 |
– |
1.4512 |
X6CrTi12 |
– |
SUH 409 |
409 Stainless Steel Specifications
| AISI 409 |
| ASTM A176 |
| ASTM A240 |
| ASTM A268 |
| ASTM A791 |
| ASTM A803 |
| DIN 1.4512 |
| DIN 1.4720 |
| UNS S40900 |
409 Stainless Steel Uses
Due to its excellent resistance to corrosion, 409 stainless steel is commonly used in automotive exhaust systems and catalytic converter components. It is also used in heat exchangers, pressure vessels, and chemical processing equipment due to its high melting point (around 1600°F). Its low cost also makes it an attractive option for less demanding applications such as food processing equipment or kitchen sinks.
Benefits of Using 409 Stainless Steel
The main benefit of using SS 409 is its corrosion resistance—it is highly resistant to both acidic and alkaline solutions, which makes it ideal for use in environments where exposure to these elements could be a problem. Its low cost, combined with its strength-to-weight ratio, make it an attractive option for many manufacturing applications that require materials that are strong but not bulky or expensive. Finally, its good ductility means that it can be easily molded into any shape necessary without cracking or breaking during the process.
Conclusion:
409 stainless steel has proven itself useful in many different industrial applications due to its beneficial properties such as corrosion resistance, strength-to-weight ratio, good ductility, and low cost. Whether you’re looking for material that can withstand acidic conditions or need something lightweight yet durable enough for use in manufacturing processes, 409 stainless steel may be the perfect solution! If you’re considering using this versatile metal alloy for your next project or application, take some time to explore all the options available so that you can find the perfect fit for your needs!
Abhishek is a seasoned blogger and industry expert, sharing his insights and knowledge on various topics. With his research, Abhishek offers valuable insights and tips for professionals and enthusiasts. Follow him for expert advice on the latest trends and developments in the metal industry.
