How is the selling price of aluminum profiles calculated, and how is the aluminum ingot price and processing fee distinguished?

As a core material in industrial manufacturing and architectural decoration, the selling price of aluminum profiles combines the volatile nature of bulk commodities with the manufacturing attributes of precision processing. Based on the complete production process from raw materials to finished products, its overall cost structure can be precisely broken down into two core components—Ingot Price and Processing Fee—supplemented by subsequent deep processing and logistics costs.

I. Ingot Price: The Baseline Raw Material Cost

The aluminum ingot price is the most transparent and largest portion of an aluminum profile’s cost structure. It directly anchors to the daily spot prices of aluminum ingots published on open commodity markets (such as Changjiang Nonferrous Metals or Nanhai Lingtong). During production, purchased pure aluminum ingots are melted, cast, and homogenized into aluminum logs. The raw material cost at this stage purely reflects bulk commodity market fluctuations. To hedge against drastic price swings, the industry standard is to use the “spot price on the order date” or the “monthly average price” as the baseline, ensuring complete price transparency.

II. Processing Fee: Cumulative Manufacturing and Material Loss Costs

The processing fee serves as the key indicator of a factory’s technical capabilities and manufacturing expertise. It encompasses all expenses from extrusion to surface treatment:

1. Material Loss & Depreciation Costs: Includes melting burn loss during ingot processing, cropping scrap loss during extrusion, mold wear, and equipment depreciation for melting furnaces and extrusion presses.

2. Energy & Labor Costs: High-voltage electricity and natural gas consumed by extrusion presses and heating furnaces, along with front-line worker salaries.

3. Surface Treatment & Auxiliary Costs: Chemical reagents, powder coatings, and other consumable materials used in processes like anodizing, electrophoretic painting, or powder coating.

4. Quality Control & Testing Costs: Expenses associated with quality management, such as testing hardness, film thickness, and tensile strength prior to factory release.

III. Additional Fees: Deep Processing and End-Services

If profiles require fabrication into finished components, additional deep processing fees apply—such as precision cutting, drilling, and milling. These are typically billed separately based on labor hours or piece rate, accounting for additional scrap loss. Finally, adding protective film and carton packaging fees alongside logistics transportation costs yields the total final delivered price.

This split-pricing model—combining Ingot Price (variable cost) with Processing Fee (manufacturing cost)—clearly delineates expense sources across all stages, offering a transparent and rational accounting framework for both buyers and suppliers.