Engineered for extreme wear resistance in Jakarta’s heavy maritime machinery, power generation setups, and high-load sleeve bearings.
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High-speed self-lubricating lead copper matrix optimized for automotive starter bushings and mechanical pumps across Indonesian manufacturing lines.
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Exceptional elasticity, fatigue resistance, and corrosion stability, preferred for electronic connectors and springs in West Java industrial hubs.
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Industry-standard machinability rating of 100%, perfect for fast-paced precision turning, fasteners, and fluid valves in regional production units.
Learn Specifications →Established in 2017, Sichuan Kepai New Materials Co., Ltd. has evolved into a premier high-tech enterprise integrating pioneering research and development, smart manufacturing, and global exportation of advanced copper and bronze alloy materials. With our sprawling 9,000-square-meter production facility and 1,000-square-meter modern administrative center, we supply high-performance metals essential to critical industries worldwide.
Our operational philosophy centers on "innovation-driven development, quality wins the market." We focus on the design and production of strategic copper alloys listed under emerging new material frameworks, including high-conductivity oxygen-free copper, tellurium copper, silver copper, dispersion copper, and superior-grade lead bronze. Our materials serve as foundational components for new energy vehicles (NEVs), 5G telecommunications, aerospace technologies, precise plasma cutting systems, and high-amperage lithium battery relays.
Located within the Guanghan Industrial Development Zone in Sichuan, adjacent to major transit corridors, our plant leverages logistical efficiency and clean hydroelectric energy to support eco-conscious global supply systems.
The Greater Jakarta Area (Jabodetabek)—encompassing key industrial corridors like Bekasi, Karawang, Cikarang, and Tangerang—stands as the industrial heart of Indonesia and Southeast Asia. As Indonesia progresses toward its "Making Indonesia 4.0" vision, local manufacturing has transitioned from low-tech assembly to advanced automotive production, complex steel fabrication, petrochemical refining, and electronic component manufacturing. This transition demands high-performance materials capable of withstanding extreme stresses, elevated temperatures, and corrosive environments.
Lead bronze is crucial in this industrial landscape. Characterized by its unique metallurgical structure, lead bronze acts as an alloy with built-in self-lubricating properties, making it invaluable for sliding contacts, heavy-duty bearings, marine sleeve units, and hydraulic pumps. Industries in Jakarta's industrial zones require consistent access to copper alloys that meet international standards, ensuring the reliability of localized production chains.
Supplying bushings, thrust washers, and starter motor gears to major automotive manufacturing hubs in Karawang and Cikarang.
Providing high-conductivity oxygen-free copper and tellurium copper alloys for power stations, substation switches, and local grids.
supplying corrosion-resistant bronze propeller parts, pump impellers, and heavy wear plates for operations at the Port of Tanjung Priok.
By positioning ourselves as a primary exporter to Jakarta, Sichuan Kepai ensures that local Indonesian fabricators, bearing manufacturers, and Tier-1 automotive suppliers receive premium alloys without the volatility associated with decentralized trading agents. We provide direct-from-mill raw materials, detailed engineering support, and reliable technical documentation.
The unique performance of lead bronze alloys (such as C93200, C93700, and customized OEM lead copper bronzes) stems from their microscopic structure. Lead is practically insoluble in solid copper. In lead bronze, it remains dispersed as fine, microscopic globules throughout the copper-tin matrix.
Under mechanical friction and high temperatures, these microscopic lead particles smear across the bearing surface, acting as a natural lubricant. This process prevents galling and seizure, even if lubrication systems experience temporary pressure drops. This characteristic is critical for machinery operating in tropical environments, where thermal expansion and humidity can compromise traditional lubricants.
At Sichuan Kepai, we utilize precise vertical continuous casting and induction furnace smelting to achieve uniform distribution of lead, preventing macro-segregation during solidification.
| Alloy Parameter | Target Ranges | Industrial Application |
|---|---|---|
| Lead Content (Pb) | 8.0% - 15.0% | Self-lubricating sliding bushings |
| Tin Content (Sn) | 7.0% - 10.0% | Structural matrix strength |
| Copper Content (Cu) | Balance | Thermal conductivity backbone |
| Tensile Strength | ≥ 220 MPa | Heavy machinery shafts |
| Yield Strength | ≥ 110 MPa | High load-bearing assemblies |
Our research and development team consists of senior metallurgical engineers and material scientists. Through collaborations with universities and independent laboratories, Kepai has developed advanced solutions in copper-alloy metallurgy, focusing on high-conductivity tellurium copper, lead bronze, and sulfur copper alloys.
Our comprehensive production system controls every step from raw material selection to extrusion and thermal processing. Our copper alloy portfolio includes pure copper, oxygen-free copper, nickel tellurium copper, tin bronze, beryllium copper, chromium zirconium copper, and customized lead bronze compositions. These materials are engineered to reduce production costs, extend equipment lifespan, and support environmental compliance.
Our market strategy focuses on regional integration: "rooted in Southwest China, radiating globally, and serving key industrial corridors." We provide direct support to manufacturing networks in Southeast Asia, particularly Greater Jakarta, to streamline supply chains and reduce delivery lead times.
Importing raw copper bars, plates, and customized castings into Indonesia requires compliance with local import regulations, including the SNI (Standar Nasional Indonesia) and specific customs protocols.四川 Kepai New Materials operates a dedicated export division to coordinate shipping logistics and documentation, streamlining transit through the Port of Tanjung Priok.
We manage shipping logistics from our inland facilities in Guanghan, utilizing intermodal routes to major Chinese ports like Shanghai or Shenzhen, followed by direct ocean freight to Jakarta. This approach helps maintain stable lead times and reduces the risk of port delays in Java.
Every shipment of copper alloy is supplied with comprehensive documentation, including original Mill Test Certificates (MTC) to EN 10204 3.1, detailed chemical composition breakdowns via spark spectrometer, and mechanical test sheets verifying hardness and tensile strengths. Our production lines maintain ISO 9001, ISO 14001, and ISO 45001 certifications to meet corporate governance and international quality requirements.
Our logistical teams assist with the paperwork necessary for Indonesian imports, including Form E for tariff preferences under the ASEAN-China Free Trade Area, clean Bills of Lading, detailed packing lists, and HS code declarations. This helps prevent delays at Indonesian customs and ensures predictable delivery schedules to warehouses in Tangerang, Cikarang, or Bekasi.
The global copper alloy industry is shifting toward materials that support energy efficiency, high automation speeds, and environmental compliance. Over the 2025-2030 period, several key trends will shape how manufacturers in Jakarta and Southeast Asia source their materials:
Modern CNC machine shops operate at high feed rates and spindle speeds. Traditional copper alloys can produce long, stringy chips that entangle machinery and damage tools. Standard-compliant free-cutting alloys, such as C14500 tellurium copper and C14700 sulfur copper, generate small, brittle chips that clear quickly from cutting zones, helping to maximize manufacturing uptime.
As electric vehicle (EV) manufacturing expands in West Java, the demand for high-conductivity, high-strength alloys has grown. Components like battery relays, charging gun terminals, and busbars require copper alloys that maintain mechanical integrity at high temperatures. High-purity oxygen-free copper and chromium zirconium copper are increasingly used to meet these electrical and thermal performance demands.
Global export regulations, such as EU RoHS and REACH, place strict limits on lead concentrations in components for consumer electronics and domestic water systems. Manufacturers in Jakarta producing for export markets are adopting specialized lead-free or low-lead alternatives, including free-cutting sulfur copper or oxygen-free tellurium copper. These alloys maintain high machinability without relying on high lead content.
We work directly with your metallurgy department to customize copper alloy compositions, dimensions, and tempers to match your manufacturing equipment and performance requirements.
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High electrical and thermal conductivity combined with excellent machinability. Recommended for plasma cutting nozzles and electrical terminals.
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Our highest strength copper-base alloy, heat-treatable for applications requiring wear resistance, fatigue strength, and electrical conductivity.
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Oxygen-free tellurium copper designed for vacuum electronics and hydrogen environment applications, providing high conductivity and low outgassing.
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Offers moderate strength combined with high thermal and electrical conductivity, suitable for resistance welding electrodes and spring contacts.
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Minimum 99.99% copper purity with low oxygen levels to prevent hydrogen embrittlement. Ideal for high-vacuum electrical applications.
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An alternative to tellurium copper for high-speed machining applications, offering balanced thermal performance and machinability.
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High-machinability alloy designed to produce clean, small chips. Helps improve tool life and cycle times in automated production lines.
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Sourced for electrical connectors, gas cutting nozzles, and components requiring high electrical conductivity and precise dimensions.
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Kepai