KUPTİN® R7
Red Bronze | CuSn7Zn4Pb7 | Rg7
KUPTİN R7 (CuSn7Zn4Pb7), produced by Çorum Bronz, is a red brass alloy that offers high wear resistance, corrosion durability, and stable performance under heavy loads. It ensures long-lasting use in bushings, bearings, and pump components.
01. Chemical Composition (%)
science02. Industries Served
factory03. Supply Forms
inventory_204. Mechanical Properties
engineering| Property Name | Imperial (psi) | Metric (MPa) | Test Method |
|---|---|---|---|
| Tensile Strength | - | 230-260 N/mm² | - |
| Yield Strength | - | 110-120 N/mm² | - |
| Hardness | 60-70 HB | 60-70 HB | - |
| Density | - | 8,8 g/cm³ | - |
05. Areas of Use
settings_suggest| Hydraulic and Pneumatic Systems: Used for hydraulic cylinder parts and fittings because of its superior sealing capabilities and pressure resistance. | |
| Valve and Fitting Components: Preferred for valve bodies and internal components (stems, seat rings) in water and steam lines due to high corrosion resistance. | |
| Automotive and Rail Systems: Used in linkage bushings and friction plates thanks to its moderate load-bearing capacity and good sliding characteristics. | |
| Marine Engineering: Reliably used for external boat hardware and internal piping components due to its durability against seawater. | |
| Machine Tools: Serves as protective wear plates or guide bushes for CNC and manual machines where continuous friction occurs. | |
| Paper and Textile Industry: Utilized in roller bearings and gear components that must withstand chemical corrosion and continuous operational cycles. |
06. Global Equivalent Grades
public| Region | Standard | Grade Definition | Notes |
|---|---|---|---|
| flag Europe | EN | CuSn7Zn4Pb7-C | Casting |
| flag Europe | EN | CuSn7Zn4Pb7-B | Ingot |
| flag Europe | EN | CC493K | Casting |
| flag Europe | EN | CC493K | Ingot |
| flag USA | ASTM | C93200 | |
| flag Germany | DIN | CuSn7ZnPb | |
| flag Germany | DIN | RG 7 | |
| flag Japan | JIS | BC3 | |
| flag Türkiye | Brand Name | KUPTİN R7 | Çorum Bronz |
| flag Global | Trade | RG 7 | Common Usage |
07. Technical Resources
folder_open08. Standard Compliance
verified_userLong Notes
note_altKUPTİN R7 (CuSn7Zn4Pb7) High-Strength Red Brass with Çorum Bronz Quality
Developed with Çorum Bronz’s advanced casting technologies, KUPTİN R7 is a powerful red brass alloy that offers high strength, wear resistance, and corrosion durability through its tin, zinc, and lead-enriched structure.
Optimized for heavy-duty applications within the KUPTİN series, this product ensures long-lasting and reliable performance in systems operating under high temperatures, heavy loads, and continuous friction.
Çorum Bronz provides not only technical excellence with the KUPTİN series but also the advantages of competitive pricing and fast supply.
Superior Material Properties
With Çorum Bronz production quality, KUPTİN R7 offers:
High Wear Resistance: Delivers an extended service life for industrial components.
Environmental Durability: Resistant to corrosion and harsh operating environments.
Heavy-Duty Stability: Maintains stable and reliable performance under heavy loads.
Low Friction Coefficient: Enables efficient operation on contact surfaces.
Thermal Stability: Retains mechanical properties at high temperatures.
These features make the KUPTİN R7 alloy an ideal choice for heavy industry applications.
Technical Structure and Mechanical Performance
KUPTİN R7 (CuSn7Zn4Pb7) is a copper-based alloy reinforced with tin, zinc, and lead.
Tensile Strength: 230 – 260 MPa
Yield Strength: 110 – 120 MPa
Hardness: 60 – 70 HB
Density: 8.8 $g/cm^3$
Note: These values guarantee reliable performance under heavy loads and on frictional surfaces.
Global Equivalent Grades
EN Standard: CuSn7Zn4Pb7
DIN Standard: 2.1090
ASTM Standard: C93200
Common Applications
Fluid Control: Pump impellers and fluid handling components.
Bearing Systems: Bushings and sliding bearing systems.
Heavy Loads: Bearings operating under medium to heavy loads.
Mechanical Parts: High-friction industrial machine components.
Sectoral Applications
Oil & Gas
Automotive
Energy & Turbine Systems
Marine & Defense
Aerospace
Supply Options
KUPTİN R7 red brass products are available through Çorum Bronz in various forms:
Bronze Rods
Bronze Flat Bars
Bronze Plates
Why Choose Çorum Bronz KUPTİN R7?
KUPTİN R7 is more than just an alloy; it is a professional engineering solution offering high strength, long life, and cost-effective advantages.