Hot Rolled ASTM A240 AISI 409L SUS 409L SUS409L Stainless Steel Plate NO.1 1D Surface 10*1500*6000 mm
Hot Rolled ASTM A240 AISI 409L SUS 409L SUS409L Stainless Steel Plate NO.1 1D Surface 10*1500*6000 mm
Type 409L (UNS S40903/1.4512)
- Resistant to high temperature, exhaust gas and atmospheric corrosion
- It is a cheaper version of grade 409 steel
- Easily fabricated, and resistant to heat
- Applicable to non-corrosive or lightly corrosive environments
- Used in automotive exhaust systems
Although stainless steel 409L is designed primarily for applications in automotive exhausts, it has been used successfully in other industrial applications such as home heating systems, electrical transformer cases, and automotive thermostats, and fuel filters.
Stainless steel type 409L has a relatively low chromium composition, which makes it a low-cost option for corrosion-resistant steel. In addition, it is has a good formability and welding performance and is also highly resistant to oxidation in high temperatures.
Steel grade 409L contains a good amount of chromium, the low composition of carbon, nitrogen, and titanium, which enhances the corrosion resistance, weldability and formability of its products.
Common Names: Grade 409L, UNS S409L00
Executive Standards:
- ASTM A240
- ASME SA240
- API
- EN 10088-2 (1.4512)
Chemical Properties:
The chemical properties of grade 409L stainless steel are presented in terms of its chemical composition as shown below.
| Element | Content (%) |
| Manganese, Mn | 1.0 max |
| Phosphorus | 0.04 max |
| Silicon, Si | 1.0 max |
| Chromium, Cr | 10.5 min, 11.7 max |
| Carbon, C | 0.03 max |
| Nickel, Ni | 0.5 max |
| Sulfur, S | 0.03 max |
| Titanium, Ti | 6(C+N) min, 0.05 max |
| Niobium, Nb | 0.17 max |
| Nitrogen, N | 0.03 max |
Mechanical Properties:
| Item | Tensile Test | Hardness Test | Bend Test | ||||
| 0.2%Y.S. | 1%Y.S. | T.S. | EL (%) | HRBW | HV | 180∘ | |
| Min | 170 | – | 380 | 20 | – | – | 0.5t |
| Max | N/mm2 | – | N/mm2 | – | 88 | – | |
Physical Properties:
The physical property of the 409L grade steel is shown below.
| Property | Value |
| Density (kg/m³) | 7600 |
| Elastic Modulus (GPa) | 208 |
| Mean Coefficient of Thermal Expansion (mm/m/°C) | 11.0 (0-100°C), 11.7 (0-315°C), 12.4 (0-538°C) |
| Specific Heat 0-100°C (J/kg.K) | 460 |
| Electrical Resistivity (nW.m) | 600 |
| Thermal Conductivity(W/m.K) | 25.8 at 100°C and at 500°C |
Key Features:
- It has a lower chromium composition.
- Has a good combination of heat and corrosion resistance
- Good formability and excellent flexibility
Product Forms Available:
It can be cut, blanked stretch formed and drawn: Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, and Chequered Plate
Applications:
- 409L steel is used in automotive exhaust systems
- Heat exchangers
- Catalytic converter systems
- Culverts
- Home heating systems
- Automotive thermostats
- Fuel filters
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Surface Finish
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Definition
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Application
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2B
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Those finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster.
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Medical equipment, Food industry, Construction material, Kitchen utensils.
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BA
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Those processed with bright heat treatment after cold rolling.
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Kitchen utensils, Electric equipment, Building construction.
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NO.3
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Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001.
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Kitchen utensils, Building construction.
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NO.4
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Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001.
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Kitchen utensils, Building construction, Medical equipment.
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HL
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Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size.
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Building construction
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NO.1
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The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling.
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Chemical tank, pipe.
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