Aluminized Silicon Steel Coil (AS) – Structural High Strength Grade
Product Overview
Structural-grade aluminized silicon steel (AS) combines S350GD high-strength low-alloy steel base with AS200 medium-heavy Al-Si coating, delivering both reliable load-bearing capacity and durable corrosion / oxidation resistance. This grade is specially designed for industrial steel structures, chimneys, exhaust stacks, plant framing and equipment supports, providing a maintenance-free alternative to painted carbon steel structural components.
Why Choose CNB Structural AS Steel?
Our structural AS steel is produced on dedicated HSLA hot-dip lines, with precise control of alloying elements, mechanical properties and coating quality. Unlike painted structural steel that requires frequent repainting and maintenance, our AS steel provides long-term inherent corrosion protection with zero ongoing coating costs. Each batch is certified for mechanical properties and coating quality to meet structural design specifications.
Key Specifications
| Item | Specification |
|---|---|
| Product Name | Structural Grade Aluminized Silicon Steel Coil (AS) |
| Thickness Range | 1.0mm – 3.0mm |
| Standard Widths | 1000mm, 1200mm, 1250mm, 1500mm, 1600mm |
| Coating Mass | AS200 (200g/m², double side, Al-Si alloy) |
| Steel Grade | S350GD |
| Coil Inner Diameter | 508mm / 610mm |
| Coil Weight | 6MT – 15MT per coil |
| Surface Finish | Bright annealed, chromated |
| Applicable Standards | ASTM A463, EN 10217, structural steel standards |
| Minimum Yield Strength | ≥350MPa |
Core Advantages
- Structural strength: S350GD grade delivers reliable load-bearing capacity for industrial framing and support structures.
- Dual protection: Resists both internal high-temperature oxidation and external atmospheric corrosion.
- Low maintenance: Inherent alloy coating eliminates the need for repeated repainting of carbon steel structures.
- Good fabricability: Supports roll forming, bending, welding and punching for structural fabrication.
Applications
This structural AS grade is widely used for industrial chimneys, exhaust stacks, plant steel framing, conveyor housings, industrial walkways, equipment support frames, boiler structures and kiln external components.
Order Information
We supply a full range of structural AS grades from S250GD to S550GD to match different load requirements. Custom sizes, coating weights and mechanical property targets can be engineered for your specific structural project. Contact our structural steel team for design support and a detailed quotation.
