Q1: What is the continuous service temperature range and short-term maximum temperature of hot-dip aluminized silicon steel? 
A1: The continuous service temperature can reach up to 450℃ (maintaining high thermal reflectivity and stable performance), and the short-term maximum temperature can reach 750℃. It shows no discoloration or powdering even after 250 hours of exposure at 300–480℃.
 
Q2: How many times better is its corrosion resistance than ordinary carbon steel in harsh environments like humid climates, coastal salt spray, and industrial waste gas? 
A2: Its comprehensive corrosion resistance is 20–50 times that of ordinary carbon steel. The dense Al2O3 oxide film on the surface isolates the steel substrate from corrosive media. For example, the AS100 grade can withstand 2100 hours of neutral salt spray testing, while ordinary carbon steel only lasts 40–100 hours under the same conditions.
 
Q3: What is the cost reduction compared to stainless steel (e.g., 304 stainless steel)? 
A3: The procurement cost is 40%–60% lower than that of 304 stainless steel. It uses low-carbon steel/low-alloy steel as the base material with an Al-Si coating (density 3.0g/cm³, only 1/2 of zinc), and the production process is more cost-effective than stainless steel smelting.

Q4: What are the main surface treatment options and their core advantages? 
A4: Two main options are available: Cr³+ passivation (environmental-friendly, Cr³+ content 20–60mg/m², excellent corrosion resistance); Chrome-free passivation (meets strict environmental standards,surface resistance <1mΩ for good conductivity). Both support oil coating for enhanced protection.
 
Q5: Can it be processed by bending, stamping, or welding? What should be noted? 
A5: Yes, it has excellent processability. It can withstand 180° bending (bend radius = 2×steel thickness) and stamping without coating peeling. It supports arc welding, spot welding, etc.—simply touch up the welding area with aluminized paint for post-weld corrosion protection.
 
Q6: What are the typical applications in automotive and home appliance industries? 
A6: - Automotive: Engine heat shields (DC54D+AS), exhaust systems (DC53D+AS), protective covers, rainwater collection boxes (DC56D+AS);
Home appliances: Oven molds, air fryers, woks, and stew pots (leveraging its high-temperature resistance and corrosion resistance).