- Description
Description
AS200 aluminized steel coil represents one of the heaviest standard aluminium-silicon coating classes for applications requiring extended heat resistance, oxidation protection, and long service life. With a nominal coating mass of 200 g/m², AS200 provides a thicker protective aluminium-silicon layer compared with common grades such as AS120 and AS150.
For high-temperature equipment, industrial furnace components, boiler-related parts, and long-term thermal applications, AS200 is selected when durability is more important than minimum material usage.
What Does AS200 Mean in Aluminized Steel?
The AS200 designation refers to an aluminium-silicon coating classification with a nominal total coating weight of approximately 200 g/m² on both sides. The heavier coating creates a thicker aluminium-rich protective layer, improving resistance against oxidation during long-term heat exposure.
| Item | AS200 Specification |
|---|---|
| Coating Type | Aluminium-silicon alloy coating |
| Nominal Coating Weight | 200 g/m² total coating mass |
| Approximate Thickness | Around 28–33 μm per side |
| Main Advantage | Maximum coating durability for severe service |
Why Choose AS200 for Long-Life Heat Resistance?
The main purpose of AS200 is extending the protection period of steel exposed to continuous thermal cycling. During high-temperature operation, aluminium in the coating reacts with oxygen and forms a stable aluminium oxide layer, which slows further oxidation.
A heavier coating provides more aluminium material available for this protective process. As a result, AS200 can maintain protection longer than lighter coating classes when operating conditions are demanding.
• Long-term oxidation resistance
• Suitable for continuous high-temperature environments
• Extended component service life
• Reduced replacement frequency for heat-exposed parts
Typical Applications of AS200 Aluminized Steel
AS200 is mainly used for equipment where failure caused by oxidation can lead to frequent maintenance or production interruption.
| Application | Reason for Using AS200 |
|---|---|
| Boiler tube protection covers | Improved oxidation resistance during long operation |
| Industrial exhaust ducts | Better durability under heat exposure |
| High-temperature furnace components | Supports longer thermal service cycles |
| Agricultural drying equipment | Handles repeated heating conditions |
AS200 vs AS150: Heat Resistance Comparison
AS150 is already widely used for exhaust and heating applications, but AS200 provides additional coating thickness for more severe operating environments.
| Comparison | AS150 | AS200 |
|---|---|---|
| Coating Weight | 150 g/m² | 200 g/m² |
| Approximate Thickness | 21–25 μm/side | 28–33 μm/side |
| Oxidation Protection | Standard high-temperature protection | Extended high-temperature protection |
| Service Life | Normal industrial cycles | Longer thermal service cycles |
In similar operating environments, AS200 may provide approximately 1.3–1.5 times longer oxidation resistance compared with AS150, depending on temperature, atmosphere, and component design.
Processing Considerations for AS200
The thicker coating improves durability but also affects fabrication behavior. During severe forming operations, excessive bending stress may damage the coating layer.
Manufacturers should consider:
- Suitable bending radius selection
- Controlled forming pressure
- Avoiding sharp-angle deformation
- Checking coating integrity after fabrication
| Processing Factor | Recommendation |
|---|---|
| Bending | Use appropriate bending radius |
| Deep forming | Evaluate coating flexibility before production |
| Surface inspection | Check for coating cracks after forming |
AS200 Material Selection vs Cost Consideration
Compared with AS150, AS200 requires more aluminium-silicon coating material. The additional coating weight generally increases material consumption, but it can reduce maintenance frequency in long-life applications.
| Factor | AS150 | AS200 |
|---|---|---|
| Coating Amount | 150 g/m² | 200 g/m² |
| Material Usage | Standard | Higher |
| Selection Priority | Balanced performance | Maximum service life |
AS200 Aluminized Steel Coil Purchasing Guide
When purchasing AS200 material, buyers should confirm coating classification, dimensions, mechanical properties, and application conditions.
• AS200 coating classification
• Steel grade and thickness
• Coil width and weight requirements
• Surface quality requirements
• Inspection documentation
Teda Ganghua AS200 Aluminized Steel Coil Supply
Teda Ganghua provides aluminized steel solutions for customers requiring high-temperature performance, coating selection support, and customized processing services. For demanding applications requiring reliable aluminized steel coil, technical support is available for material evaluation and application matching.
FAQ About AS200 Aluminized Steel Coil
1. What is AS200 aluminized steel coating?
AS200 is a heavy aluminium-silicon coating class with approximately 200 g/m² total coating mass on both sides.
2. Why choose AS200 instead of AS150?
AS200 provides a thicker coating layer and is selected when longer high-temperature oxidation resistance is required.
3. Is AS200 suitable for forming?
Yes, but thicker coatings require careful forming control and suitable bending radius to protect coating integrity.
4. Where is AS200 commonly used?
AS200 is used in boiler components, industrial ducts, furnace parts, and long-life thermal equipment.
5. How should AS200 coating quality be checked?
Coating weight testing, surface inspection, and technical documentation are commonly used for quality verification.
