Products Description
The selection between C26000 (Cartridge Brass) and H62 (Chinese Standard Brass) represents a critical decision point in brass alloy specification for industrial applications. This comprehensive analysis examines the fundamental differences, performance characteristics, and application suitability of these two widely-used brass alloys across global markets.
C26000, governed by ASTM standards, represents the Western approach to brass metallurgy with emphasis on corrosion resistance and formability. H62, following Chinese GB standards, prioritizes mechanical strength and machinability at optimized cost points. Understanding these distinctions is essential for engineers, procurement specialists, and manufacturing professionals operating in today's globalized supply chains.
Global Market Position
| Region | Primary Standard | Most Common Brass Grade | Market Characteristics |
|---|---|---|---|
| North America | ASTM | C26000, C36000 | High-performance applications |
| Europe | EN, DIN | CW508L, CW617N | Quality-focused manufacturing |
| East Asia | JIS, GB | H62, H68, C2600 | Volume production emphasis |
| Southeast Asia | Mixed (ASTM/GB) | C26000, H62 | Cost-sensitive markets |
| Middle East | ASTM/EN | C26000, CW508L | Infrastructure projects |
| Latin America | ASTM | C26000 | Resource extraction industries |
Chemical Composition Analysis
Detailed Composition Comparison
| Element | C26000 (ASTM B36) | H62 (GB/T 5231) | Impact on Properties |
|---|---|---|---|
| Copper (Cu) | 68.5 – 71.5% | 60.5 – 63.5% | Corrosion resistance, conductivity, ductility |
| Zinc (Zn) | Balance (28.5 – 31.5%) | Balance (36.0 – 39.0%) | Strength, hardness, cost reduction |
| Lead (Pb) | ≤ 0.07% | ≤ 0.08% | Machinability enhancement |
| Iron (Fe) | ≤ 0.05% | ≤ 0.15% | Strength increase, workability reduction |
| Aluminum (Al) | – | ≤ 0.01% | Deoxidation, strength enhancement |
| Tin (Sn) | – | ≤ 0.20% | Corrosion resistance improvement |
| Arsenic (As) | ≤ 0.02% | – | Dezincification resistance |
| Phosphorus (P) | ≤ 0.02% | ≤ 0.01% | Deoxidation agent |
Compositional Impact Analysis
The 8-10% difference in copper content between these alloys creates cascading effects throughout their property profiles:
Higher Copper Content (C26000):
Enhanced corrosion resistance in marine and atmospheric environments
Superior electrical and thermal conductivity
Improved ductility for complex forming operations
Better brazing and welding characteristics
Higher material cost due to copper premium
Higher Zinc Content (H62):
Increased yield and tensile strength
Enhanced machinability due to improved chip formation
Better hot working characteristics
Reduced material cost
Slightly compromised corrosion resistance
Mechanical Properties Comparison
Tensile Properties at Room Temperature
| Property | C26000 (Annealed) | C26000 (H04) | H62 (Annealed) | H62 (Hard) | Units |
|---|---|---|---|---|---|
| Tensile Strength | 300-380 | 410-540 | 315-390 | 440-540 | MPa |
| Yield Strength (0.2%) | 75-140 | 275-380 | 105-165 | 285-395 | MPa |
| Elongation | 60-68 | 15-25 | 50-65 | 8-20 | % |
| Hardness (HV) | 60-85 | 115-145 | 70-95 | 125-155 | HV |
| Modulus of Elasticity | 110 | 110 | 105 | 105 | GPa |
| Fatigue Strength (10^7 cycles) | 140 | 180 | 145 | 190 | MPa |
Temperature-Dependent Properties
| Temperature | Property | C26000 | H62 | Units |
|---|---|---|---|---|
| -40°C | Tensile Strength | 420 | 435 | MPa |
| 20°C | Tensile Strength | 340 | 355 | MPa |
| 100°C | Tensile Strength | 315 | 325 | MPa |
| 200°C | Tensile Strength | 280 | 285 | MPa |
| 300°C | Tensile Strength | 245 | 240 | MPa |
Forming Characteristics
| Forming Operation | C26000 Rating | H62 Rating | Comments |
|---|---|---|---|
| Deep Drawing | Excellent (5/5) | Good (4/5) | C26000 superior for complex shapes |
| Bending | Excellent (5/5) | Very Good (4/5) | Both suitable for tight radii |
| Spinning | Excellent (5/5) | Good (4/5) | C26000 preferred for thin-wall parts |
| Cold Heading | Very Good (4/5) | Excellent (5/5) | H62 superior for fasteners |
| Thread Rolling | Good (3/5) | Excellent (5/5) | H62 much better surface finish |
| Stamping | Excellent (5/5) | Very Good (4/5) | Both excellent for fine details |
Physical and Thermal Properties
Physical Properties Comparison
| Property | C26000 | H62 | Units | Significance |
|---|---|---|---|---|
| Density | 8.53 | 8.40 | g/cm³ | Weight considerations |
| Melting Point | 915-940 | 905-925 | °C | Processing temperature |
| Liquidus Temperature | 940 | 925 | °C | Casting parameters |
| Solidus Temperature | 915 | 905 | °C | Heat treatment |
| Electrical Conductivity | 28% IACS | 26% IACS | % | Electrical applications |
| Thermal Conductivity | 120 | 109 | W/m·K | Heat dissipation |
| Coefficient of Thermal Expansion | 20.5 | 20.8 | 10⁻⁶/K | Dimensional stability |
| Magnetic Permeability | 1.0 | 1.0 | μ/μ₀ | Non-magnetic applications |
Thermal Processing Parameters
| Process | Parameter | C26000 | H62 | Units |
|---|---|---|---|---|
| Annealing | Temperature | 425-650 | 450-650 | °C |
| Annealing | Time | 0.5-3 | 0.5-2 | hours |
| Hot Working | Temperature Range | 600-800 | 650-850 | °C |
| Cold Work Reduction | Before Annealing | 85% | 80% | % |
| Grain Size (Annealed) | ASTM | 5-7 | 4-6 | Number |
Corrosion Resistance Analysis
Environmental Performance Comparison
| Environment | C26000 Performance | H62 Performance | Corrosion Rate (μm/year) |
|---|---|---|---|
| Atmospheric (Urban) | Excellent | Good | C26000: 2-5, H62: 5-8 |
| Atmospheric (Marine) | Excellent | Fair-Good | C26000: 5-10, H62: 10-15 |
| Fresh Water | Excellent | Good | C26000: 1-3, H62: 3-6 |
| Seawater | Good | Fair | C26000: 15-25, H62: 25-40 |
| Soil (Average) | Good | Fair | C26000: 5-15, H62: 10-25 |
| Ammonia Solutions | Poor | Poor | Both susceptible to stress cracking |
| Sulfur Compounds | Fair | Fair | Both require protective measures |
Dezincification Resistance
| Test Condition | C26000 Result | H62 Result | Standard |
|---|---|---|---|
| ASTM B858 Method A | Layer <200μm | Layer >200μm | ASTM B858 |
| ISO 6509-1 (24h) | Type 1 (Excellent) | Type 2 (Good) | ISO 6509 |
| Accelerated Test (80°C) | Minimal attack | Moderate attack | Internal |
| Field Exposure (5 years) | Surface only | Subsurface penetration | Comparative |
Manufacturing and Processing Characteristics
Machinability Assessment
| Machining Operation | C26000 Rating | H62 Rating | Cutting Speed (m/min) | Tool Life Comparison |
|---|---|---|---|---|
| Turning | Good (3.5/5) | Excellent (5/5) | C26000: 150-250, H62: 200-350 | H62: 2x longer |
| Drilling | Good (3.5/5) | Excellent (5/5) | C26000: 80-120, H62: 120-180 | H62: 1.8x longer |
| Milling | Good (3/5) | Very Good (4.5/5) | C26000: 100-180, H62: 150-250 | H62: 1.5x longer |
| Threading | Fair (2.5/5) | Excellent (5/5) | C26000: 60-100, H62: 100-150 | H62: 3x longer |
| Surface Finish | Ra 1.6-3.2 | Ra 0.8-1.6 | μm | H62 superior |
Welding and Joining Characteristics
| Joining Method | C26000 Suitability | H62 Suitability | Recommended Parameters |
|---|---|---|---|
| TIG Welding | Excellent | Good | Low current, pure argon |
| MIG Welding | Good | Fair | Deoxidized bronze filler |
| Brazing | Excellent | Very Good | 750-850°C, flux required |
| Soldering | Excellent | Very Good | 185-250°C, rosin flux |
| Resistance Welding | Very Good | Good | High pressure, short time |
| Friction Welding | Good | Very Good | Moderate pressure |
Heat Treatment Response
| Treatment | C26000 Response | H62 Response | Typical Parameters |
|---|---|---|---|
| Stress Relief | Good response | Good response | 250-300°C, 1-2 hours |
| Full Anneal | Excellent | Excellent | 450-650°C, controlled cooling |
| Partial Anneal | Very Good | Very Good | 350-450°C, air cooling |
| Age Hardening | Not applicable | Not applicable | Single-phase alloys |
| Grain Refinement | Possible | Possible | Controlled deformation + anneal |
Application-Specific Performance
Industry Applications Matrix
| Industry Sector | Application | C26000 Preference | H62 Preference | Selection Criteria |
|---|---|---|---|---|
| Architecture | Door hardware | ★★★★★ | ★★★ | Appearance, corrosion resistance |
| Architecture | Window fittings | ★★★★★ | ★★★ | Weather resistance, formability |
| Automotive | Radiator cores | ★★★★ | ★★★★★ | Cost, thermal conductivity |
| Automotive | Fuel system | ★★★★★ | ★★★ | Corrosion resistance |
| Electronics | Connectors | ★★★★★ | ★★★ | Conductivity, reliability |
| Electronics | Heat sinks | ★★★★ | ★★★★★ | Cost-performance ratio |
| Marine | Propeller hardware | ★★★★★ | ★★ | Seawater resistance |
| Marine | Deck fittings | ★★★★★ | ★★★ | Corrosion resistance |
| Plumbing | Valve bodies | ★★★★ | ★★★★★ | Machinability, cost |
| Plumbing | Pipe fittings | ★★★★★ | ★★★ | Dezincification resistance |
Performance in Specific Applications
| Application | Critical Properties | C26000 Advantages | H62 Advantages |
|---|---|---|---|
| Cartridge Cases | Formability, strength | Proven military heritage, deep drawing capability | Cost-effective for sporting ammunition |
| Lamp Components | Conductivity, corrosion resistance | Superior atmospheric resistance | Lower cost for indoor applications |
| Clock Movements | Precision, stability | Dimensional stability, fine machining | Cost-effective for movement gears |
| Musical Instruments | Acoustic properties, workability | Traditional choice, excellent forming | Cost advantage for student instruments |
| Decorative Hardware | Appearance, durability | Superior outdoor performance | Indoor applications, high-volume production |
Economic and Supply Chain Considerations
Cost Analysis Factors
| Cost Component | C26000 Impact | H62 Impact | Typical Difference |
|---|---|---|---|
| Raw Material | Higher copper content | Lower copper content | H62: 15-25% lower |
| Processing | Standard rates | Improved machinability | H62: 10-20% lower |
| Secondary Operations | Standard | Reduced finishing | H62: 5-15% lower |
| Quality Control | Standard | Standard | Comparable |
| Transportation | Standard | Standard | Comparable |
| Total Manufactured Cost | Baseline | Reduced | H62: 12-20% lower |
Global Supply Chain Characteristics
| Region | C26000 Availability | H62 Availability | Lead Times | Quality Consistency |
|---|---|---|---|---|
| North America | Excellent | Limited | 2-4 weeks | Very High |
| Europe | Excellent | Moderate | 3-6 weeks | Very High |
| China | Good | Excellent | 1-2 weeks | High |
| Southeast Asia | Good | Excellent | 2-3 weeks | Good-High |
| India | Moderate | Good | 4-6 weeks | Moderate-Good |
| Brazil | Good | Limited | 6-8 weeks | Good |
Market Pricing Trends (5-Year Historical)
| Year | Copper Price Index | C26000 Relative Price | H62 Relative Price | Price Differential |
|---|---|---|---|---|
| 2019 | 100 | 100 | 82 | 18% |
| 2020 | 95 | 96 | 79 | 17% |
| 2021 | 125 | 126 | 104 | 17% |
| 2022 | 135 | 137 | 113 | 18% |
| 2023 | 115 | 116 | 96 | 17% |
Standards and Specifications
International Standards Comparison
| Standard Body | C26000 Designation | H62 Equivalent | Scope | Regional Usage |
|---|---|---|---|---|
| ASTM (USA) | C26000 | – | Material specification | North/South America |
| EN (Europe) | CW508L | – | European standard | European Union |
| JIS (Japan) | C2600 | C2680 | Japanese industrial | Japan, Southeast Asia |
| GB (China) | – | H62 | Chinese national | China, developing markets |
| IS (India) | – | Similar to H62 | Indian standard | India, surrounding regions |
| ABNT (Brazil) | NBR equivalent | – | Brazilian standard | Brazil |
Quality Specifications Comparison
| Test Parameter | C26000 Requirement | H62 Requirement | Test Method |
|---|---|---|---|
| Chemical Composition | ASTM B36 | GB/T 5231 | ICP-OES, XRF |
| Tensile Properties | ASTM B36 | GB/T 228 | Universal testing |
| Grain Size | ASTM E112 | GB/T 6394 | Metallographic |
| Surface Quality | ASTM B36 | GB/T 8888 | Visual, dimensional |
| Dimensional Tolerance | ASTM B36 | GB/T 4423 | Precision measurement |
| Corrosion Resistance | ASTM B858 | GB/T 10119 | Accelerated testing |
Conclusion and Recommendations
Choose C26000 when:
Corrosion resistance is paramount
Aesthetic appearance is critical
Deep drawing or complex forming is required
Electrical conductivity is important
Marine or harsh atmospheric exposure is expected
Long-term reliability justifies premium cost
Choose H62 when:
Cost optimization is primary concern
High-volume machining operations are involved
Mechanical strength requirements are moderate
Indoor or controlled environment application
Supply chain flexibility is needed
Processing efficiency impacts total cost
Our factory
We specialize in providing a comprehensive range of materials, including pure copper (C11000), brass (C26000, C28000), and phosphor bronze, available in various forms such as strips, sheets, tubes, and coils. Equipped with advanced rolling mills, continuous casting lines, and precision slitting equipment, we offer fully customizable dimensions, tempers (from soft annealed to full hard), and surface finishes (mill, bright, brushed) to meet specific customer requirements. Our integrated operation-from smelting and alloying to final inspection-ensures complete traceability and consistency. Certified to international standards such as ISO 9001, we implement rigorous SPC quality control at every stage.Please feel free to contact us anytime for detailed information and technical quotes.Mail：sales@gneemetal.com
Product Packaging
Our export packaging system is specifically designed for high-value copper products, utilizing multi-layered industrial-grade protection. The standard process involves: wrapping the product with VCI (Vapor Corrosion Inhibitor) paper to effectively prevent salt spray corrosion during sea transportation; inserting reinforced wooden shafts into coil inner diameters and attaching high-strength plastic edge protectors to prevent edge damage; securely fastening the entire package to IPPC-marked fumigated wooden pallets with cross steel strapping for structural integrity; and finally, sealing the package entirely with waterproof stretch film to ensure moisture and dust resistance. All packaging is clearly marked with shipping labels and safety warnings, and combined with customized loading plans, maximizes container space utilization.
