Product Details
Place of Origin: Wenzhou,China
Brand Name: Zheheng
Certification: ISO9001
Model Number: pipe
Payment & Shipping Terms
Minimum Order Quantity: 1Ton
Packaging Details: In wooded cases or pallets,or as for clients requirement
Delivery Time: 7-15 working days after receiving payment
Payment Terms: L/C, D/P, T/T, Western Union
Supply Ability: 8000 Ton/Tons per Month
Length: |
3-6 Meters Or Customized |
Usage: |
Decorative |
Technique: |
Cold Drawn/Cold Rolling Or Both Of Them |
Thickness: |
0.2-20mm |
OD: |
10-820mm |
Grade: |
400 Series |
Length: |
3-6 Meters Or Customized |
Usage: |
Decorative |
Technique: |
Cold Drawn/Cold Rolling Or Both Of Them |
Thickness: |
0.2-20mm |
OD: |
10-820mm |
Grade: |
400 Series |
Overview
Alloy 409 is a general purpose, chromium, titanium stabilized, ferritic stainless steel whose primary application is automotive exhaust systems. It contains 11% chromium which is the minimum amount for the formation of the passive surface film which gives stainless steels their corrosion resistance. It combines good elevated temperature corrosion resistance with medium strength, good formability, and overall cost. Alloy 409 resists corrosion strongly compared to carbon steel and is used as an alternative to carbon steel in mildly challenging environments where its high resistance to corrosion and high temperature oxidation gives an advantage. It is commonly used in applications where appearance is a secondary quality to mechanical properties and corrosion resistance.
Chemical composition
| C | Mn | Si | P | S | Cr | Ni | Ti | |
| 409 | 0.08 | 1 | 1 | 0.045 | 0.045 | 10.5-11.75 | 0.5 | 0.48-0.75 |
Physical Properties
| 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 | |||||
| 430 | 7750 | 200 | 10.4 | 11 | 11.4 | 26.1 | 26.3 | 460 | 600 |
Application
Automotive exhaust systems
Catalytic converters
Mufflers
Tailpipes
Farm equipment
Structural support and hangers
Transformer cases
Furnace components
Heat exchanger tubing
Corrosion Resistance
Grade 409 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.
Mechanical Composition
| Grade | Tensile Strength MPa (min) | Yield Strength 0.2% MPa(min) | Elongation % | Hardness (Brinell) MAX | Hardness (Rockwell B) MAX |
| 409 | 380 | 207 | 20 | 207 | 95 |
Physical Properties
| 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 | 11.7 | 12.4 | 25.8 | 27.5 | 460 | 600 |
Heat Resistance
Generally classified as resistant to scaling in intermittent service up to 1499oF (815oC ) and up to 1247oF (675oC) in continuous service
Heat Treatment
Annealing of grade 409 steels is carried out at temperatures ranging from 790 to 900°C, followed by air-cooling. Thermal treatment does not harden grade 409 steels.
Commodity packaging
Video
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