Why Choose Our C18150 Round Bars?
1. More Consistent Quality: Multiple quality control measures to eliminate defects
- Raw Material Control: We use 99.99% high-purity electrolytic copper, and Grade 1 raw materials for chromium and zirconium in accordance with national standards, ensuring chemical purity from the source;
- Production Control: Utilizes vacuum melting technology to prevent oxidation, inclusions, and compositional segregation; hot extrusion combined with precision straightening ensures dimensional accuracy and straightness;
- Quality Inspection: Every batch undergoes three major tests—chemical composition, mechanical properties, and physical properties—with authoritative test reports issued; all non-conforming products are rejected;
- Surface Control: Multiple polishing processes ensure a smooth surface free of scratches, pores, and cracks, preventing issues such as tool jamming and wear during subsequent processing.
2. Superior Performance: Versatile and Suitable for High-Load Conditions
- High Conductivity + High Strength: Conductivity reaches 75–85% IACS, while tensile strength ranges from 480–700 MPa, addressing the industry challenge that “high conductivity typically means low strength”;
- High-Temperature Resistance + Wear Resistance: Softening temperature ≥500°C; resists deformation and wear at high temperatures, with a service life 3–5 times longer than standard copper rods;
- Easy to machine + high toughness: Excellent ductility allows for various machining processes such as turning, milling, drilling, bending, and welding; resistant to cracking and highly efficient to process;
- Non-magnetic and eco-friendly: A non-magnetic material that does not interfere with surrounding electronic components; compliant with RoHS environmental standards; suitable for high-end electronics and medical equipment applications.
3. More cost-effective: Reduces costs and improves efficiency, offering outstanding value for money
- Long service life: High wear resistance reduces replacement frequency, lowering material replacement costs and minimizing downtime losses;
- Efficient machining: High dimensional accuracy and a smooth surface result in minimal machining allowances, saving processing time and reducing material waste;
- Low energy consumption: High electrical conductivity reduces current loss, lowering production energy consumption (particularly suitable for welding and power applications).
Quality Testing and Certification
1. Testing Items
- Chemical Composition Testing: Using a spectrometer to measure the content of elements such as Cu, Cr, and Zr to ensure compliance with the UNS C18150 standard;
- Mechanical Property Testing: Tensile testing, hardness testing, and impact testing to ensure that tensile strength, hardness, elongation, and other indicators meet standards;
- Physical Property Testing: Electrical conductivity testing, thermal conductivity testing, and softening temperature testing to ensure electrical and thermal conductivity as well as high-temperature resistance;
- Appearance and Dimensional Inspection: Using calipers, micrometers, and roughness meters to measure diameter, length, tolerances, and surface roughness, ensuring compliance with premium-grade standards;
- Internal Quality Inspection: Utilizing ultrasonic testing to detect internal defects such as porosity, cracks, and inclusions, preventing non-conforming products from leaving the factory.
2. Certification and Qualifications
The products comply with UNS C18150, ASTM B152, and GB/T 2040-2017 standards, have passed RoHS environmental certification, and can provide third-party test reports (e.g., SGS, CTI). We support on-site inspection by customers.
FAQ
Q1: What is the difference between C18150 chromium-zirconium-copper round bars and beryllium-copper round bars?
A1: Both are high-strength copper alloys, but they differ in their key characteristics: C18150 offers higher electrical conductivity (75–85% IACS vs. 40–60% IACS for beryllium copper), better high-temperature resistance (softening temperature ≥500°C vs. ≥300°C for beryllium copper), and is non-magnetic and environmentally friendly; Beryllium copper has higher hardness, but lower electrical conductivity, and the beryllium content poses certain toxicity risks, while also being more expensive. C18150 is better suited for applications requiring high conductivity, high temperatures, and non-magnetic properties, whereas beryllium copper is better suited for applications requiring high precision and high hardness.
Q2: How much longer is the service life of high-quality C18150 round bars compared to standard C18150 round bars?
A2: High-quality C18150 round bars, due to their uniform composition, low impurity content, and proper heat treatment, have a service life that is 20–30% longer than that of standard C18150 round bars. In high-frequency applications such as welding and tooling, their service life can be extended by 3–5 times.
Q3: What types of test reports can you provide? Do you support third-party testing?
A3: We can provide factory test reports (covering chemical composition, mechanical properties, physical properties, dimensional testing, and other items) and support third-party testing (such as SGS and CTI). Customers may designate the testing agency, and testing fees will be negotiated based on actual circumstances.
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