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We are the Leading Supplier of Stainless Steel SUS409/ SUS409L
Stainless Steel Ss409 is a Ferritic steel that offers good mechanical properties and high-temperature corrosion resistance.
We supply and export to Singapore , Indonesia , Brunei and other ASEAN Countries.
Our specialty is to provide wide range of stainless steel with no minimum order (MOQ).
E Steel supply Stainless Steel SUS409 (SS409 or SS409L) Plates , Origin CHINA Mill.
Stainless Steel SUS409 Supplier – SUS409L , UNS S40900 , AISI 409 , DIN 1.4512 Stainless Steel
SUS409 Stainless Steel is a Ferritic steel that offers good mechanical properties and high-temperature corrosion resistance. It is commonly considered as a chromium stainless steel, with applications in exhaust systems of automobiles and applications that demand weldability.
SUS409 steels are also available in highly stabilized forms, such as grades S40930, S40920 and S40910. The stability of these grades is provided by the presence of niobium, titanium, or both, in the composition of steels.
Chemical Composition of SUS409 Stainless Steel
|
Stainless Steel 409 |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
T |
|
min. |
- |
- |
- |
- |
- |
10.5 |
- |
6x C |
|
max. |
0.08 |
1.00 |
1.00 |
0.045 |
0.045 |
11.75 |
0.5 |
0.75 |
Mechanical Properties of SS409 Stainless Steel
|
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 |
|
SS 409 |
450 |
240 |
25 |
75 |
131 |
Physical Properties of SUS409
|
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 |
|
SS409 |
7800 |
200 |
11.0 |
11.7 |
12.4 |
25.8 |
27.5 |
460 |
600 |
Stainless Steel SUS409 is equivalent to
|
Grade |
UNS No |
Old British |
Euronorm |
Swedish SS |
Japanese JIS |
|
BS |
En |
No |
Name |
|
SS409 |
S40900 |
409S19 |
– |
1.4512 |
X6CrTi12 |
– |
SUH 409 |
Alternative Grades for SUS409
|
Grade |
Properties |
|
3CR12 |
Easy to weld and good corrosion resistance. Heavy sections are more easily available when compared to 409. |
|
SUS304 |
High heat resistance and corrosion resistance. Grade 304 is expensive. |
|
SUS321 |
Better heat resistance when compared to 304 or 409. |
|
Aluminized steel |
Cheaper than grade 409 stainless steel, but less resistant to exhaust gases. |
Corrosion Resistance of Stainless Steel 409
Grade 409 stainless steels have excellent resistance to exhaust gas and atmospheric corrosion, superior to that of SS410 martensitic grades with 12% chromium and 3CR12. However, the corrosion resistance is lower than that of grade SS430 steels containing 17% chromium. The surface of grade SS 409 steels is liable to mild corrosion, which limits the usage of steels for decorative purposes.
Heat Resistance of SUS409
Grade 409SS stainless steels offer scaling resistance at temperatures up to 675°C during continuous operation, and up to 815°C under intermittent conditions. These temperatures pertain to specific service environments.
Welding
Grade 409SS steels must be pre-heated to temperatures of 150 to 260°C before welding. Although grade 430SS and 409 filler rods or electrodes can be used during welding of grade 409 steels, grade 309SS electrodes or filler rods are strongly recommended by AS 1554.6. Care should be taken to weld grade 409 stainless steels with minimum heat, in order to mitigate grain growth.
Ductility of the welded products can be improved by annealing post-welding at temperatures of 760 to 815°C. However, this is not required for thin welded products. Welding of exhaust tubing of automobiles is carried out without filler rods.
Applications of SUS409 Stainless Steel
The typical applications of 409 stainless steels are listed below
-
Automotive exhaust tubing
-
Catalytic converter systems
-
Mufflers
Our Sales & Supplier Network
Australia, Pakistan, Malaysia, Taiwan, China, Vietnam, Belgium, Japan, South Korea, Philippines, France, United Kingdom, Indonesia, Thailand, Hong Kong, Sweden, United States, Dubai, Finland, Brunei, Germany & etc.
E Steel is the Global Metal Procurement Company in providing and sourcing raw materials to a variety of engineering industries and sectors. We work as an online B2B Metal Marketplace to help our customers in finding the required steels that are difficult to source locally.
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