| Type: | Stainless Steel Coils |
|---|---|
| Standard: | ASTM, AISI |
| Grade: | 400 Series |
|
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Product Detail
409 409L cold rolled stainless steel coil, 409 409L CRC
Thickness: 0.2mm - 8.0mm
Width: 600mm - 2000mm, the narrowed products pls check in strip products
Max coil weight: 25MT
Coil ID: 508mm,610mm
Finish: 2B,2D
409 Similar grade from different country standard
1.4512 S40930 0Cr11Ti
409 Chemical Component :
C:≤0.08 ,Si :≤1.0 Mn :≤1.0 , S :≤0.03 ,P :≤0.045, Cr :10.5~11.7 ,Ni :0.5 Max,
Ti: 6xC - 0.75
409 Mechanical Property :
Tensile strength : > 380 Mpa
Yield Strength : >205 Mpa
Elongation (%): > 20%
Hardness: < HRB88
Bending Angle: 180 degree
409L Same grade from different country standard
SUH409L S40903 00Cr11Ti 022Cr11Ti
409L Chemical Component :
C:≤0.03 ,Si :≤1.0 Mn :≤1.0 , S :≤0.03 ,P :≤0.045, Cr :10.5~11.7 ,Ni :0.5 Max,
Ti: 6xC - 0.75
409L Mechanical Property :
Tensile strength : > 380 Mpa
Yield Strength : >205 Mpa
Elongation (%): > 20%
Hardness: < HRB88
Bending Angle: 180 degree
Description about 409 409L
The 409L/S40903 stainless steel is mainly used for manufacturing automotive exhaust gas treatment devices.
409 409L Crystalline characteristics
(1) The solid and liquid two-phase region of 409L steel is very small, less than 30°C
(2) There is almost no γ phase at high temperature. Therefore, when the 409L steel begins to crystallize after pouring, the supercooling degree of the liquid phase is large due to direct contact with the surface of the crystallizer, and at the same time, the surface of the crystallizer promotes non-spontaneous nucleation. Therefore, the nucleation rate of the liquid phase is high and the formation rate is high. Fine equiaxed crystals on the surface. The formation of fine equiaxed grains on the surface is rapid, and the carbides of titanium are too short to precipitate. After the formation of the fine equiaxed crystal regions, the general steel forms columnar crystals, but the 409L steel does not show columnar crystals. Due to the narrow temperature range in the liquid-solid two-phase zone, the 409L steel has a small component overcooling zone during crystallization, and the columnar crystals do not easily grow forward. At the same time, after the formation of the fine equiaxed crystal region, titanium and carbon have time to diffuse to form titanium carbide particles after a period of time to promote non-self nucleation. The above two reasons cause the area to produce equiaxed crystals without columnar crystals. There are no columnar crystal structures on the cross section, all of which are equiaxed crystals, but of different sizes. In the pouring process, when the temperature of the slab drops to 1100°C, if the carbon content is high, part of Cr and C form carbides, and chromium-depleted areas appear around the carbides, and a small amount of δ phase may appear. At this point two different phases of the steel appear in the steel, or the delta phase content is 32% to 60% in the blank plastic zone. The carbon content of 409L steel is very low, even if there is a δ phase, the amount is small. Therefore, there is no big impact on performance.
There is almost no α → γ phase transition from high temperature to low temperature of 409L steel, so the grains are easy to grow up, coarse ferrite structure appears, and the strength is low. In the continuous casting, when the slab is cut upward, the elbow is easy to appear. Phenomenon, affecting normal production. The main problem in the crystallization of 409L steel is the reduced performance caused by coarse grains.
409 409L cold rolled stainless steel coil (0.2mm-8mm)
| Thickness | 0.2mm - 8.0mm |
| Width | 600mm - 2000mm |
| Max coil weight | 25MT |
| Coil ID | 508mm,610mm |
| Finish | 2B,2D |
409 Similar grade from different country standard
1.4512 S40930 0Cr11Ti
409 Chemical Component :
C:≤0.08 ,Si :≤1.0 Mn :≤1.0 , S :≤0.03 ,P :≤0.045, Cr :10.5~11.7 ,Ni :0.5 Max,Ti: 6xC - 0.75
409 Mechanical Property :
Tensile strength : > 380 Mpa
Yield Strength : >205 Mpa
Elongation (%): > 20%
Hardness: < HRB88
Bending Angle: 180 degree
409L Same grade from different country standard
SUH409L S40903 00Cr11Ti 022Cr11Ti
409L Chemical Component :
C:≤0.03 ,Si :≤1.0 Mn :≤1.0 , S :≤0.03 ,P :≤0.045, Cr :10.5~11.7 ,Ni :0.5 Max,Ti: 6xC - 0.75
409L Mechanical Property :
Tensile strength : > 380 Mpa
Yield Strength : >205 Mpa
Elongation (%): > 20%
Hardness: < HRB88
Bending Angle: 180 degree
Description about 409 409L
The 409L/S40903 stainless steel is mainly used for manufacturing automotive exhaust gas treatment devices.
409 409L Crystalline characteristics
(1) The solid and liquid two-phase region of 409L steel is very small, less than 30°C
(2) There is almost no γ phase at high temperature. Therefore, when the 409L steel begins to crystallize after pouring, the supercooling degree of the liquid phase is large due to direct contact with the surface of the crystallizer, and at the same time, the surface of the crystallizer promotes non-spontaneous nucleation. Therefore, the nucleation rate of the liquid phase is high and the formation rate is high. Fine equiaxed crystals on the surface. The formation of fine equiaxed grains on the surface is rapid, and the carbides of titanium are too short to precipitate. After the formation of the fine equiaxed crystal regions, the general steel forms columnar crystals, but the 409L steel does not show columnar crystals. Due to the narrow temperature range in the liquid-solid two-phase zone, the 409L steel has a small component overcooling zone during crystallization, and the columnar crystals do not easily grow forward. At the same time, after the formation of the fine equiaxed crystal region, titanium and carbon have time to diffuse to form titanium carbide particles after a period of time to promote non-self nucleation. The above two reasons cause the area to produce equiaxed crystals without columnar crystals. There are no columnar crystal structures on the cross section, all of which are equiaxed crystals, but of different sizes. In the pouring process, when the temperature of the slab drops to 1100°C, if the carbon content is high, part of Cr and C form carbides, and chromium-depleted areas appear around the carbides, and a small amount of δ phase may appear. At this point two different phases of the steel appear in the steel, or the delta phase content is 32% to 60% in the blank plastic zone. The carbon content of 409L steel is very low, even if there is a δ phase, the amount is small. Therefore, there is no big impact on performance.
There is almost no α → γ phase transition from high temperature to low temperature of 409L steel, so the grains are easy to grow up, coarse ferrite structure appears, and the strength is low. In the continuous casting, when the slab is cut upward, the elbow is easy to appear. Phenomenon, affecting normal production. The main problem in the crystallization of 409L steel is the reduced performance caused by coarse grains.
| Stainless Steel Coil, Strip, Sheet, Plate, Tube/Pipe | |||||
| Grade: | 201 , 301 , 304 , 304L , 309S , 310S, 316L, 317L, 321, 409L, 410, 410S, 430, 439, 444, 904L, 2205, 2507, etc. | ||||
| Finish: | NO.1, 2B, 2D, BA, NO.4, NO.8, 8K, mirror, hair line, sand blast, brush, etching, checkered, embossed, etc. | ||||
| Thick: | 0.2 - 200 mm | Width: | 4 - 2000 mm | Length: | 500 - 12000 mm / coil |
| Surface | Feature | Summary of manufacturing method | Application |
| NO.1 | Silver white matt | A rough, matte surface that is hot rolled to a specified thickness, then annealed and descaled | Does not require surface gloss |
| NO.2D | silver white | Heat treatment and pickling after cold rolling | 2D products are used for applications that do not require strict surface requirements, general materials, and deep drawing materials |
| NO.2B | Gloss is stronger than NO.2D | After NO.2D treatment, the final pass is lightly cold rolled by polishing rollers | General materials |
| BA | Bright as a mirror | There is no standard, but it is usually bright annealed surface processing, with high surface reflectivity. | Building materials, kitchen utensils |
| NO.3 | Rough grinding | Use 100~200# (unit) grinding belt for grinding | Building materials, kitchen utensils |
| NO.4 | Intermediate grinding | Polished surface obtained by grinding with 150~180# abrasive belt | Same as above |
| NO.240 | Fine grinding | Grinding with 240# grinding belt | Kitchenware |
| NO.320 | Very fine grinding | Grinding with 320# grinding belt | Same as above |
| NO.400 | Gloss close to BA | Use 400# polishing wheel for grinding | General timber, construction timber, kitchen utensils |
| HL | Hairline grinding | Grinding the hairline with the appropriate particle size abrasive material (150~240#) has a lot of grains | Buildings, construction materials |
| NO.7 | Close to mirror polishing | Use 600# rotary polishing wheel for grinding | For art and decoration |
| NO.8 | Mirror grinding | Mirror grinding with polishing wheel | Reflector, for decoration |
Product & Application
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