Сил2С Aluminum Alloy Products Supplier

Сил2С aluminum alloy, also written as СИЛ2С / Sil2S / SIL2S, is a Russian Al-Si wrought aluminum alloy and a heat-treatable alloy, suitable for aerospace, oil and gas equipment, and construction engineering projects.

Chalco supplies Сил2С aluminum sheets, plates, coils, strips, and foils for Russian standard material procurement, including engines, turbines, aircraft structures, satellite parts, oil and gas equipment parts, windows, doors, and curtain wall systems. Production solutions can be confirmed according to drawings, standards, and project requirements.

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Сил2С aluminum alloy standards and specifications

GOST 4784-2019 / GOST 4784-97: Used to confirm the grade designation, chemical composition, and density data of Сил2С / СИЛ2С.
OST 1-92014-90: Used to confirm material requirements for Сил2С in aviation and special industrial projects.
GOST 9.510: Used as a reference for packaging, transportation, protection, and storage requirements of Сил2С rolled products.

Сил2С aluminum alloy chemical composition

Element	Mass Fraction, %
Fe	≤0.20
Si	8.5–9.5
Mn	≤0.10
Ti	≤0.10
Al	89.84–91.50
Cu	≤0.03
Ca	≤0.10
Mg	≤0.05
Zn	≤0.08
Other impurities	Each ≤0.05

Description of main elements in Сил2С aluminum alloy

Si (silicon): The key alloying element. Its high content helps improve wear resistance, dimensional stability, and high-temperature performance retention.
Al (aluminum): The base element, providing lightweight performance, basic corrosion resistance, and good rolling processability.
Fe (iron): A controlled impurity element. Excessive Fe may affect plasticity, rolling performance, and forming stability.
Cu (copper): Controlled at a low level to reduce its impact on corrosion resistance and material stability.
Mn (manganese): Helps improve microstructural stability and reduce the negative effects of iron impurities.
Mg (magnesium): Controlled at a low level to maintain the Al-Si characteristics of Сил2С.
Zn (zinc): Controlled at a low level to avoid shifting toward an Al-Zn-Mg high-strength alloy system.
Ti (titanium): Helps refine grains and improve microstructural uniformity and processing stability.
Ca (calcium): May affect silicon phase morphology and help maintain the structural stability of Al-Si alloys.

Сил2С aluminum alloy available product forms

Chalco specializes in Сил2С rolled aluminum products and can review production and supply feasibility according to grade, chemical composition, thickness, width, quantity, and quality document requirements.

Сил2С aluminum sheet

Suitable for aerospace parts, equipment repair panels, Russian standard project replacement parts, cut parts, and subsequent formed components.

Сил2С aluminum plate

Suitable for engines, turbines, equipment parts, machining blanks, structural components, and old drawing projects.

Сил2С aluminum coil

Suitable for continuous stamping, slitting, batch parts production, equipment enclosures, and supporting materials for building systems.

Сил2С aluminum strip

Suitable for narrow strip parts, gaskets, stamped parts, window and door system components, curtain wall accessories, and small equipment parts.

Сил2С aluminum foil / thin strip

Suitable for thin gaskets, separators, precision stamped parts, special equipment components, and custom projects requiring thin Al-Si aluminum materials.

Сил2С aluminum alloy applications

Aerospace industry

Сил2С aluminum alloy can be used in the aerospace industry, including engine parts, turbines, aircraft bodies, and satellite-related components. It is suitable for projects requiring lightweight performance, Al-Si composition control, and Russian standard material confirmation.

Oil and gas equipment manufacturing

Сил2С aluminum alloy can be used for oil and gas equipment, including equipment housings, protective plates, partitions, gaskets, liners, and repair replacement parts, suitable for procurement according to GOST, OST, or project drawings.

Construction engineering

Сил2С aluminum alloy can be used in construction engineering, including building panels, decorative panels, window and door system parts, curtain wall system parts, connection pieces, and cut-to-size parts, suitable for projects requiring Russian aluminum alloy confirmation.

Сил2С aluminum alloy mechanical properties

Property	Reference Value
Tensile strength σB	180–220 MPa
Yield strength / proportional limit σT	80–120 MPa
Elongation after fracture δ5	2–5%
Reduction of area ψ	1–3%
Impact toughness KCU	Not specified
Brinell hardness HB	50–70 MPa

Note: The mechanical properties of Сил2С may vary depending on supply temper, heat treatment, processing method, and product form. Final properties should be based on the order technical agreement, test report, or customer-specified standard.

Сил2С aluminum alloy physical properties

Property	Reference Value
Density ρ	2,650–2,700 kg/m³
Modulus of elasticity E	68,000–72,000 MPa
Linear expansion coefficient α, 20–100°C	22.5–24.0 × 10⁻⁶ 1/°C
Thermal conductivity λ	150–170 W/(m·°C)
Specific heat capacity C	900 J/(kg·°C)
Electrical resistivity R	0.035–0.040 Ω·mm²/m

Advantages and limitations of Сил2С aluminum alloy

Advantages of Сил2С aluminum alloy

Suitable for rolling and forming: Сил2С is a wrought aluminum alloy that can be supplied as sheets, plates, coils, strips, and thin strips for cutting, stamping, slitting, and machining.
Good welding and brazing adaptability: Сил2С can be used for parts requiring welding or brazing, but the process should be confirmed by thickness, temper, and project requirements.
Lightweight for structural applications: With a density of about 2.65–2.70 g/cm³, Сил2С is suitable for aerospace, oil and gas equipment, and building system parts requiring weight reduction.
Certain atmospheric corrosion resistance: The aluminum base provides good basic corrosion resistance for equipment parts, building accessories, and enclosure materials in general atmospheric environments.
Good dimensional stability during heat treatment and processing: The Al-Si composition helps improve dimensional stability in thermal and processing conditions.

Limitations of Сил2С aluminum alloy

Lower ductility than pure aluminum and some soft aluminum alloys: Due to its high Si content, Сил2С usually has lower plasticity and deep drawing performance.
Not recommended for high dynamic load structures: For parts under impact, fatigue, or high dynamic loads, actual working conditions, mechanical tests, and project standards should be confirmed.
Welding process is sensitive: Welding or brazing requires proper process control, material temper, and joint design to avoid performance instability.
No clear foreign direct equivalent: Сил2С is a Russian standard grade with no widely recognized direct international equivalent. Substitution should be confirmed by drawings, standards, and chemical composition, not simply by AA, EN, or ASTM grades.

Сил2С aluminum alloy quality documents and export support

Chalco can provide the following documents according to order and project requirements: Material Test Certificate / MTC
Chemical Composition Report
Dimensional Inspection Report
Batch Traceability
Packing List
Packing Photos
Certificate of Conformity
Standard Confirmation Documents
Export Documents

For old Russian standard projects, aviation repair projects, or special industrial procurement, it is recommended to confirm the required document types before quotation to avoid acceptance issues caused by document mismatch after delivery.

What information should be provided when purchasing Сил2С rolled aluminum products?

To quickly confirm production feasibility, dimensions, standards, and quotation, customers are advised to provide the following information:

Alloy grade: Сил2С / СИЛ2С / Sil2S / SIL2S
Applicable standard: GOST 4784-2019, GOST 4784-97, OST 1-92014-90, or project-specified standard
Product form: aluminum sheet, plate, coil, strip, foil, or cut-to-size rolled product
Dimensions: thickness, width, length, coil weight, inner diameter, strip width, and tolerance requirements
Surface requirements: surface quality, protective film, edge condition, flatness, or packaging protection requirements
Supply temper: confirmed according to customer drawings, technical agreement, or order requirements
Purchase quantity: sample quantity, trial order quantity, batch purchase plan, or annual demand
Application: aerospace parts, Russian standard repair projects, old equipment reproduction, stamping, slitting, or machining
Drawings or samples: special specifications, old drawings, or sample photos are recommended if available
Quality document requirements: MTC, chemical composition report, dimensional report, batch traceability, export documents, etc.
Delivery requirements: destination port, transportation method, packaging requirements, and delivery schedule

Сил2С aluminum alloy transportation and packaging

Chalco can provide export packaging for Сил2С aluminum sheets, plates, coils, strips, and foils according to product form, size, weight, and transportation method, reducing bumps, deformation, moisture, and surface damage during shipment.

Aluminum sheet / plate packaging

Moisture-proof paper, plastic film, corner protection, wooden pallets, or wooden cases can be used. For cut-to-size sheets and plates, edge protection and steel strapping can be added to reduce surface scratches and edge damage during sea or land transportation.

Aluminum coil packaging

Aluminum coils can be packed with moisture-proof film, inner and outer guards, end protection, steel strapping, and wooden pallet fixing. Coil packaging focuses on preventing edge damage, end face dents, moisture oxidation, and loosening during transportation.

Aluminum strip / foil packaging

Aluminum strips and foils can be packed with moisture-proof, pressure-resistant, and anti-deformation protection according to coil diameter, width, and surface requirements. Thin-gauge materials should have stronger end protection and outer protection to avoid dents, edge damage, and surface contamination.

Export transportation support

Sea, land, or multimodal transportation packaging can be provided according to customer requirements, with packing lists, packing photos, marking information, and export documents for customs clearance, receiving, and warehouse management.

Storage advice

Сил2С rolled products should be stored in a dry, ventilated environment without corrosive gases after arrival. Avoid rain, moisture, and long-term outdoor storage. Aluminum coils, strips, and foils should be used soon after unpacking or reprotected against moisture.

Other rolled aluminum products available from Chalco

1980 aluminum

1985 aluminum

1105 aluminum

1420 aluminum

1163 aluminum

1920 aluminum

FAQ

What is Сил2С aluminum alloy?

Сил2С, also written as СИЛ2С / Sil2S / SIL2S, is a Russian Al-Si wrought aluminum alloy with high Si content, used for aerospace, oil and gas equipment, construction engineering, and old Russian standard projects.

Can Сил2С be used for welded structures?

Yes. Сил2С can be used for welded or brazed parts, but heat input, welding temperature, and process parameters should be controlled according to thickness, temper, and project requirements.

What is the maximum part size for Сил2С?

The size depends on product form, rolling capability, thickness, width, cut length, and further processing method. Chalco can confirm available sizes according to drawings or size requirements.

How is the corrosion resistance of Сил2С?

Сил2С has certain corrosion resistance in general atmospheric environments. For humid, corrosive, oil and gas, or outdoor building environments, surface treatment and protection should be confirmed.

Can Сил2С parts be anodized?

Yes. Anodizing can be reviewed according to surface condition and project requirements. The final effect depends on alloy composition, temper, surface quality, and treatment process.

How is Сил2С different from other aluminum alloys?

Сил2С has higher Si content and belongs to the Al-Si wrought aluminum alloy system. It offers better wear resistance, dimensional stability, and thermal performance retention, but lower ductility than pure aluminum or some soft aluminum alloys.

What Сил2С products can Chalco supply?

Chalco mainly supplies Сил2С rolled products, including sheets, plates, coils, strips, foils, and cut-to-size rolled parts. Ingots, castings, profiles, bars, and tubes are not the main supply scope of this page.

Can Сил2С samples be provided?

Yes. Sample supply can be reviewed according to product form, size, production schedule, and testing requirements. Special thicknesses, non-standard widths, or custom requirements usually need feasibility and MOQ confirmation first.

What is the MOQ for Сил2С?

MOQ depends on product form, thickness, width, quantity, composition confirmation, cut-to-size requirements, and inspection documents. Standard sheets, coils, strips, and foils can be reviewed for small-batch supply, while non-standard or custom rolled products require production scheduling confirmation.