Baimaoxing Baimaoxing

High-Quality 3105 Aluminum Coil Manufacturers & Factory

Precision-Engineered Medium-Strength Aluminum Alloys for Global Industrial Roofing, Building Materials, Packaging, and Architectural Formwork

Featured Industrial Metal Alloys & Coils Portfolio

Explore our primary industrial metallic selection, featuring cold-rolled carbon alloys, wear-resistant brass plates, high-grade titanium sheets, and universal copper tubes engineered for high-stress manufacturing environments.

China Wear-resistant C28000 C26000 brass plate

C28000 C26000 Brass Plate for Decoration & Construction

Premium wear-resistant copper-zinc alloy sheets optimized for facade architecture, structural panel systems, and high-durability internal partitions.

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ASTM B265 titanium plates

High-Quality ASTM B265 Titanium Plates Gr1 Gr2 Gr3 Gr5

Aerospace and chemical processing grade titanium plates providing exceptional strength-to-weight ratios and complete corrosion immunity in saline and acidic media.

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High-Quality Stainless Steel Sheet

High-Quality Stainless Steel 201 304 316L Sheet / Plate

Cold-rolled austenitic and ferritic sheets featuring high mechanical tensile strength and superior anti-oxidation profiles for food-grade, surgical, and structural uses.

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China Copper Plate C1100

99.9% Copper Plate C1100 C18200 C70600 T2 Thick Sheet

Ultra-pure electrical-grade copper sheeting boasting superior thermal and electrical conductivity, ideal for busbars, transformers, and heat exchange systems.

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China Stainless Steel Flat Bar

Polished 201 304 316 Stainless Steel Flat & Square Bar

Brightly polished, custom-dimension solid bars providing extreme bending resilience, structural support, and chemical resistance for machinery parts.

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Universal Brass Tubing

Multi-Model Universal Brass Tubing H62 H65 HPb59-1

Seamless brass pipes custom-extruded for refrigeration, HVAC systems, sanitary installations, and general fluid transportation channels.

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Chinese aluminum coil manufacturers

Chinese Aluminum Coil Manufacturers: 1060-6061 Series

Comprehensive mill-finish and coated aluminum coil series covering structural temper variants (H112, H14, H18, H24) for complex forming tasks.

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High-quality brass rod supplier

High-Quality H59 H62 H65 Brass Rod General-Purpose Base

Machining-grade solid brass rods offering outstanding free-cutting properties, structural hardness, and electrical conductivity for connectors.

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3105 Aluminum Coil: Technical Blueprint & Material Science

Alloy 3105 is an Al-Mn-Mg series work-hardening aluminum alloy, containing approximately 0.3% to 0.8% Manganese (Mn) and 0.2% to 0.8% Magnesium (Mg). Often designated as a medium-strength alloy with outstanding corrosion resistance and formability, 3105 aluminum coils exhibit up to 15% higher mechanical yield limits than the baseline 3003 series, making it the industry standard substrate for structural color coating, sheet metal components, and deep-drawn packaging products.

Chemical Element Si (Silicon) Fe (Iron) Cu (Copper) Mn (Manganese) Mg (Magnesium) Cr (Chromium) Zn (Zinc) Ti (Titanium) Al (Aluminum)
Percentage (%) 0.6 max 0.7 max 0.3 max 0.3 - 0.8 0.2 - 0.8 0.2 max 0.4 max 0.1 max Remainder

Excellent Mechanical Strength

By integrating both Mn and Mg into the aluminum solid solution, 3105 alloy displays an enhanced work-hardening rate. When processed through H14 or H24 tempers, it offers yield strengths in the range of 120-180 MPa while preserving critical elongation values needed for subsequent rolling, bending, and roll-forming operations without micro-cracking.

Anti-Corrosive Integrity

The native oxide layer formed on 3105 aluminum is chemically inert and exhibits superior resistance to localized pitting and atmospheric oxidation. When subjected to acidic industrial atmospheres or saline coastal environments, 3105 maintains long-term structural reliability, which is why it is preferred for rain gutters and building facades.

Formability & Deep Drawing

The microstructural grain control achieved in Shandong Baimaoxing's hot-rolling mill allows the 3105 alloy to undergo extreme structural deformation. This high plasticity makes it ideal for complex architectural details, complex metal panels, heat exchangers, and bottle caps which require tight radiuses without tearing.

Macro Industry Solutions & Global Commercial Realities

Across the international manufacturing sector, structural lightness combined with corrosion resilience is a primary engineering goal. The 3105 aluminum coil acts as a vital structural component within the modern supply chain. Below are the key sectors utilizing our technical solutions globally:

1. Clean Energy Infrastructure & HVAC

In thermal management and residential/commercial HVAC installations, 3105 aluminum serves as high-stability casing and heat exchanger structural sheets. Its ability to survive cyclic humidity variations without intergranular corrosion ensures that the internal thermal profiles remain stable over multi-decade lifespans, cutting down operational and maintenance overheads.

2. Sustainable Prefabricated Building

As green building certifications (such as LEED and BREEAM) grow more stringent, the demand for highly recyclable building envelopes has risen. 3105 aluminum coils, often made from recycled scrap feeds, require only 5% of the energy needed for primary aluminum production. They are processed into prepainted architectural siding, roof panels, and insulated sandwich boards, providing a lightweight, low-carbon alternative to structural steel.

3. Rigid Packaging & Closures

Within the consumer packaging sector, the material properties of the alloy are exploited for roll-on pilfer-proof (ROPP) bottle caps, beverage closures, and deep-drawn can ends. In this application, high ductility is critical. 3105 alloy permits high-speed stamping and deep forming with near-zero failure rates, minimizing scrap and improving output for canning lines.

About Shandong Baimaoxing Iron and Steel Co., Ltd.

Located in the industrial hub of Liaocheng City, Shandong Province, China, Shandong Baimaoxing Iron and Steel Co., Ltd. is a premier metal supplier specializing in metallurgical research, processing, international distribution, and dedicated engineering services.

Our expansive business portfolio encompasses specialized steel pipes, high-strength carbon plates, stainless steel coils (grades 201, 304, 316L), wear-resistant brass plates, high-grade copper sheets (C1100, C70600), titanium alloys (Gr1 to Gr5), prepainted galvanized steel coils (PPGI & PPGL), and structural aluminum alloys. Baimaoxing operates on a scientific management paradigm, and our certified products are widely utilized across aerospace, petrochemical engineering, defense, ship building, precision mechanical tool systems, transport infrastructure, and packaging machinery industries worldwide.

Global Standards, Technical Roadmap & Regional Compliance

To operate successfully in highly regulated global markets, compliance with local standards is critical. Our 3105 aluminum coils are produced in strict alignment with regional manufacturing benchmarks including ASTM B209 (North America), EN 485 / EN 573 (Europe), and JIS H4000 (Japan). This compliance ensures that our products meet the exact mechanical, dimensional tolerance, and chemical purity standards required for import and assembly in major markets.

North America Compliance

Standards: ASTM B209, ASME SB209
Our materials undergo regular testing for tensile strength (UTS: 115 - 200 MPa), 0.2% yield offset, and clear bend limits. Every batch shipped to USA and Canadian markets is issued with a certified material test report (MTR) detailing chemical analysis and physical testing verification.

European Union Directives

Standards: EN 485-2, EN 573-3, REACH, RoHS
Our manufacturing processes ensure that trace heavy metal content (such as Lead, Cadmium, and Mercury) is kept well below RoHS thresholds. These coils are fully certified for export to the EU, supporting building facades and product containers.

Asia-Pacific Standardizations

Standards: JIS H4000, GB/T 3880
Optimized for precision stamping and sheet metal fabrication lines in Japan, Korea, and Southeast Asia. The coils are manufactured with minimal thickness tolerances and flatness parameters to prevent equipment jams during automated processing.

Strategic Future Roadmap: Low-Carbon Aluminum Smelting

Shandong Baimaoxing is committed to a green transition. Over the next five years, our technical roadmap focuses on reducing carbon intensity. We are expanding the use of green electricity (such as solar and hydro-power) in our refining steps and aiming for a 75% recycled aluminum input target for our 3000-series alloy lines. This helps our global clients meet Scope 3 emissions reduction targets, ensuring long-term supply chain sustainability.

Why Partner With Shandong Baimaoxing?

One-stop Services

We provide our customers with raw metals alongside custom processing, sizing, tension leveling, surface slitting, protective film application, and direct logistical support.

Outstanding Professionals

Our metallurgical team holds decades of combined experience in continuous casting, cold rolling, and heat treatment optimization to resolve processing challenges.

International Certification

Our factory is certified to ISO 9001:2015 standards. Selected products hold SGS environmental and material performance reports, fully matching EU ROHS benchmarks.

Shandong Baimaoxing Factory Tour

Our operational flowchart integrates real-time ERP monitoring with strict checkpoints. From scrap feedstock selection and chemical spectroscopy analysis to hot rolling, cold reduction, final leveling, and packing, every step is traced with barcode documentation.

We operate advanced high-precision rolling mills, high-speed slitting lines, and automated tension-levelers. This equipment allows us to control strip shape and thickness tolerances, ensuring flat, uniform coil surfaces for downstream color-coating or forming.

Our testing facilities are equipped with optical emission spectrometers, mechanical testing machines, and salt-spray corrosion chambers. Every batch of 3105 aluminum is verified for chemical composition and mechanical properties before shipping.

Global Partnership & Industrial Exhibitions

We actively present our latest metallurgical products at international trade fairs, demonstrating our manufacturing capabilities and establishing connections with procurement departments globally.

Products Center

Carbon alloy steel round bars

High-quality 4140/4130/4340 carbon alloy steel round bars, hot-rolled/cold-rolled, thickness 6-600mm

Our high-quality carbon steel round bars cover grades Q235B, A36, 1045 and 45#, with customizable diameters (5–300mm) and lengths up to 6m (or cut-to-size). Featuring excellent machinability, weldability and tensile strength, they undergo precision forging/rolling and strict quality checks. Compliant with ASTM and GB standards, they suit machinery parts, fasteners, shafts, construction brackets and automotive components for industrial use.

Carbon steel coils

Hot-rolled Q195/ Q235/ Q235b/ Q345/ A36/ SS400/ SA302 carbon steel coils for the construction industry

Carbon steel plate: Carbon steel refers to carbon steel with a carbon content of less than 0.8%. Compared to carbon structural steel, carbon steel has lower levels of sulfur, phosphorus, and non-metallic inclusions, resulting in better mechanical properties. Based on carbon content, carbon steel can be divided into three categories: low-carbon steel (C≤0.25%), medium-carbon steel (C 0.25-0.6%), and high-carbon steel (C>0.6%).

low-carbon steel seamless tubes

Low-priced ASTM A53 A106 Gr.B low-carbon steel seamless tubes, Sch40 Sch80 hot-rolled MS round tubes, used for manufacturing

Carbon steel pipe is a steel pipe made by perforating steel ingots or solid round steel into rough pipes, and then hot rolling, cold rolling or cold drawing. Carbon steel pipe plays an important role in my country's steel pipe industry and is widely used in various industrial fields. Characteristics: Good toughness for hot-rolled, smooth finish and high strength for cold-rolled. Applied widely in bridges, buildings, brackets, fluid delivery pipelines, etc.

Carbon steel plates

Factory direct sales of Q235/Q345/SS400/Q355 carbon steel plates, thickness 6mm-12mm, reasonable prices, bending and welding processing services available

Our premium carbon steel plates cover structural and mechanical grades like Q235B, Q355B, A36 and 1045, with full documentation and mechanical property assurances.

We stock high-quality stainless steel coils and plates in grades 201, 304, 316, and 321. Surface finishes include 2B, BA, No.4, Hairline, and Mirror polished, meeting diverse requirements from sanitary piping to chemical storage tanks.

Our copper range includes 99.9% pure C1100 copper plates, C12200 deoxidized copper tubes, C70600 copper-nickel alloys, and brass rods (H59, H62, H65) offering excellent cold formability and electric conduction profiles.

Specialty supply of 1000, 3000, 5000, 6000, and 7000 series aluminum alloy sheets and coils alongside ASTM B265 Titanium plates (Gr1, Gr2, Gr3, Gr5) for demanding environments.

Color-coated steel sheets and coils (PPGI / PPGL) with paint coatings in polyester (PE), silicone modified polyester (SMP), high durability polyester (HDP), and polyvinylidene fluoride (PVDF) for durable outdoor applications.

FAQ: Technical Answers on 3105 Aluminum Coil Procurement

Get authoritative technical answers regarding metallurgy, processing specifications, and order logistics for 3105 aluminum alloys.

While both belong to the 3000 series (Manganese-based alloys), 3105 aluminum contains a defined addition of Magnesium (0.2% to 0.8%) which is mostly absent in 3003. This addition improves work hardening, resulting in 10-15% higher mechanical strength. Additionally, 3105 contains slightly higher limits for Copper, Zinc, and Chromium, which help stabilize the grain structure during cold-rolling and heat-treatment cycles.
For structural roll-forming, building siding, and roofing panels, the H14 (strain-hardened to half-hard) and H24 (strain-hardened and partially annealed to half-hard) tempers are recommended. These offer a balanced combination of tensile strength (145 - 185 MPa) and yield strength (above 115 MPa) while maintaining sufficient elongation (often > 5% depending on thickness) to prevent cracking at the seam lines.
Yes. 3105 exhibits excellent compatibility with organic coatings including PVDF, Polyester (PE), and Polyurethane (PU). For anodizing, while 3105 can be anodized for protective purposes, its multi-element chemical composition (silicon, iron, and copper limits) means it does not produce the same bright, clear finish as 5005 or 6063. For aesthetic architectural finishes, color coating is the preferred option.
We use continuous tension leveling systems to eliminate edge waves and oil-canning. Additionally, our processing lines use automated surface inspection systems that detect micro-voids, roll marks, or oil stains in real-time. For high-finish requirements, we apply a temporary polyethylene protective film (50-80 microns) to prevent scratching during transport and stamping.
We supply thicknesses from 0.2mm to 6.0mm and coil widths ranging from 20mm up to 2600mm. Inner coil diameters are typically 508mm or 610mm. Thickness tolerances are controlled within +/- 0.02mm, and width tolerances are kept within +/- 0.5mm, conforming to ASTM B209 and EN 485 limits.
3105 offers good corrosion resistance in coastal environments. However, for direct, continuous exposure to seawater or high-salinity marine environments, 5000-series alloys like 5083, 5086, or 5052 are recommended. These alloys have higher magnesium contents (2.5% to 5.0%), which provide better resistance to alkaline marine conditions.
Every shipment is accompanied by a Mill Test Certificate (MTC) conforming to EN 10204 3.1. This certificate details the exact melt-batch chemical composition, tensile testing values, yield limit values, elongation percentages, and confirmation of compliance with requested international standards (such as ASTM, EN, or JIS).

Additional Industrial Coils & Structural Metals

Explore our range of customizable color-coated roofing sheets, high-strength alloy round bars, corrosion-resistant titanium tubes, and pre-coated galvanized steel coils engineered to support infrastructure and manufacturing lines.

Color-coated steel coil

Color-Coated Steel Coil & Galvanized Z275 Roofing Panel

Heavy-duty galvanized base coils coated with protective polymers (PVDF/PE), designed for extreme outdoor exposure and long-term roofing systems.

Technical Specifications
Alloy steel round bars

High-Quality 4140 4130 4340 Carbon Alloy Steel Round Bars

High-tensile alloy steel round bars (6mm-600mm) suitable for high-stress gears, shafts, structural fasteners, and heavy industrial machinery components.

Technical Specifications
Corrugated Roofing Steel Sheet

OEM Color Coated Dx51d+Z Corrugated Roofing Steel Sheet

Customizable mid-to-high hardness roofing sheets offering excellent load-bearing capacity and corrosion resistance for agricultural and industrial buildings.

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Titanium pipes

China High-Strength Titanium Pipes GR1 & GR2 Customizable

Seamless and welded titanium tubes designed for heat exchangers, marine exhaust systems, and chemical processing pipelines.

Technical Specifications
aluminum alloy sheets

Factory Supplier of Aluminum Alloy Sheets: 1050 to 7075

Extensive inventory of structural aluminum sheets, including medium-strength and aerospace-grade alloys, cut to custom dimensions.

Technical Specifications
OEM Stainless Steel Coil

OEM Stainless Steel Coil Supplier & Factory

Precision-rolled stainless steel coils available in grades 304, 316, and 430, with tailored slit widths and surface finish parameters.

Technical Specifications
Low-carbon seamless tubes

ASTM A53 A106 Gr.B Low-Carbon Steel Seamless Tubes

Pressure-rated carbon steel pipes (Sch40/Sch80) suitable for steam, water, gas, and structural structural piling installations.

Technical Specifications
PPGI PPGL steel coils

Cold-Rolled ASTM PPGI PPGL Color-Coated Steel Coils

High-precision prepainted steel coils (0.12mm-4.0mm) featuring custom RAL colors and excellent paint adhesion for roll forming.

Technical Specifications