Hot Rolled Pure Aluminum Plate

Updated: 2026-07-15

Overview

Hot rolled pure aluminum plate (≥99% Al) is manufactured by heating aluminum ingots above recrystallization temperature (300-500°C) and rolling them into sheets. This process improves mechanical properties and surface quality compared to cold rolling. The material combines aluminum's inherent advantages—light weight (1/3 steel's density), corrosion resistance, and conductivity—with hot rolling's cost efficiency for thicknesses typically ranging from 6mm to 200mm. Industrial grades include 1050, 1060, and 1100 series, with minor alloying elements (Fe, Si) affecting machinability. Its isotropic grain structure from hot rolling ensures uniform performance across directions, making it preferable for structural applications requiring consistent strength.

Physical and Chemical Properties

The material exhibits a tensile strength of 70-150 MPa (depending on temper) and elongation up to 35%. Its thermal conductivity (235 W/m·K) makes it ideal for heat exchangers, while electrical conductivity (62% IACS) suits busbars and conductive components. The naturally forming oxide layer provides corrosion resistance in pH 4-9 environments. Notably, hot rolled plates have higher formability than cold rolled counterparts due to reduced work hardening. They maintain stability across temperatures (-80°C to 150°C), with a linear expansion coefficient of 23.1×10⁻⁶/°C. Chemical resistance includes excellent performance against organic compounds but vulnerability to strong acids/alkalis.

Main Applications

In construction, hot rolled aluminum plates serve as curtain walls, roofing, and structural panels due to their weather resistance and weight savings (30-50% lighter than steel alternatives). The automotive industry uses them for body panels, battery enclosures, and heat shields, capitalizing on crash energy absorption and thermal management. Electronics applications include capacitor foils and LED heat sinks, where purity (>99.5%) ensures optimal conductivity. Packaging industries employ thicker plates for chemical tanks and food processing equipment, leveraging non-toxicity and FDA compliance. Emerging uses encompass renewable energy (solar panel frames) and aerospace (non-critical structural parts).

Safety and Storage

While aluminum is non-flammable and non-toxic in solid form, grinding or machining generates dust that requires OSHA PEL compliance (15 mg/m³ total dust; 5 mg/m³ respirable fraction). Storage should prevent galvanic corrosion by isolating from copper or steel, using wooden pallets or rubber separators. For indoor storage, maintain relative humidity below 70% to prevent water staining. Outdoor stacks should be elevated and covered with breathable tarps. Chemical compatibility precautions include avoiding contact with chlorides (risk of pitting corrosion) and strong alkalis (rapid dissolution). Fire exposure risks melting but no toxic gas emission.

B2B Procurement Guide

Key specifications to confirm: alloy (e.g., 1060), temper (O for annealed, H12 for strain-hardened), thickness tolerance (±5-10%), and surface finish (mill finish, brushed, or coated). For architectural use, specify PVDF or anodized coatings. MOQs typically start at 3-5 tons, with lead times of 2-4 weeks for custom sizes. Quality certifications to request: ISO 9001, ASTM B209, and EN 485-2. For cost optimization, consider coil-to-plate processing for large orders. Logistics should account for aluminum's softness—edge protectors and interleaf paper prevent transit damage. Spot prices track LME aluminum (plus $500-1,000/ton processing fees), with discounts for 20+ ton orders.