H68 Copper Rectangular Bars
Henan Gnee New Material Co., Ltd. is one of the most professional manufacturers and suppliers of h68 copper rectangular bars in China, specialized in providing high quality copper products with competitive price. Welcome to buy discount h68 copper rectangular bars for sale here from our factory. Customized orders are welcome.
What are H68 Copper Rectangular Bars?
Characteristics of H68 Brass Rod H68 brass rod is mainly composed of two metal elements, copper and zinc, and its yellow appearance is due to the unique color of the copper element.
Brass rods have good ductility and conductivity, and can be processed into various shapes by heating and forging.
In addition, H68 brass rods have high corrosion resistance and can be used in the atmosphere and water for a long time without serious corrosion.
In addition, the mechanical properties of H68 brass rods are also better, with a certain degree of strength and hardness.
Product Data Sheet / Specifications
| Property | Details / Standard |
|---|---|
| Material Grade | H68 (Chinese Standard) |
| Common Name | 68/30 Brass / Cartridge Brass / Deep Drawing Brass |
| Standards | GB/T 4423, GB/T 5232, ASTM B36, ASTM B134, EN 12167, JIS H3250 |
| Material Type | Copper-Zinc Alloy (Alpha Brass) |
Chemical Composition (Weight %)
| Element | Copper (Cu) | Zinc (Zn) | Lead (Pb) | Iron (Fe) | Antimony (Sb) | Bismuth (Bi) | Phosphorus (P) |
|---|---|---|---|---|---|---|---|
| Percentage | 67.0 - 70.0% | Balance | ≤ 0.03% | ≤ 0.10% | ≤ 0.005% | ≤ 0.002% | ≤ 0.01% |
Mechanical Properties
| Property | Value |
|---|---|
| Density | 8.50 g/cm³ |
| Electrical Conductivity | 24% - 27% IACS @ 20°C |
| Electrical Resistivity | 0.068 µΩ·m @ 20°C |
| Thermal Conductivity | 108 - 115 W/m·K @ 20°C |
| Melting Point (Liquidus) | 940°C (1724°F) |
| Melting Point (Solidus) | 910°C (1670°F) |
| Modulus of Elasticity | 110 GPa |
| Poisson's Ratio | 0.34 |
| Coefficient of Thermal Expansion | 19.9 µm/m°C (20°C to 300°C) |
| Specific Heat Capacity | 380 J/kg·K @ 20°C |
Available Lead Content Options
| Type | Lead Content | Application |
|---|---|---|
| Standard H68 | ≤ 0.03% | General engineering, standard applications |
| Low-Lead H68 | ≤ 0.01% | RoHS compliant, potable water contact |
| Lead-Free H68 | ≤ 0.002% | Medical, food processing, strict environmental compliance |
Uses of H68 brass rods
1.Deep Drawing & Forming
Deep drawn housings for electronics
Battery casings and containers
Ammunition components (cartridge cases - traditional)
Musical instrument parts (brass instrument bells, tubing)
Complex shaped components for various industries
Hydraulic cylinder components
Pressure vessel end caps
2. Architectural & Decorative Applications
Decorative trim and moldings for buildings
Handrail systems and balustrade components
Door and window frames (premium applications)
Elevator door trim and cabin accents
Storefront displays and fixtures
Furniture components and accents
Lighting fixtures and lamp parts
Signage and lettering
3. Heat Exchanger Components
Heat exchanger fins and plates
Radiator components for automotive and industrial
Cooler plates for various applications
Condenser components
Evaporator plates
H68 vs. Other Common Brass Grades
| Property | H68 (CuZn30) | H65 (CuZn35) | H62 (CuZn37) | H59 (CuZn40) |
|---|---|---|---|---|
| Copper Content | 67-70% | 64-67% | 60.5-63.5% | 57-60% |
| Zinc Content | 30-33% | 33-36% | 36-39% | 40-43% |
| Color | Golden yellow | Pale yellow | Yellow-gold | Reddish-yellow |
| Ductility | Excellent | Good | Good | Fair |
| Formability (Cold) | Excellent | Good | Good | Fair |
| Strength | Good | Good | High | Very High |
| Elongation (Annealed) | 50-65% | 45-60% | 40-55% | 30-45% |
| Corrosion Resistance | Very Good | Good | Good | Moderate |
| Machinability | Fair | Good | Excellent | Excellent |
| Cost | Higher | Medium | Medium | Low |
When to Choose H68 Over Other Materials
| Application Requirement | Choose H68 | Choose H62 | Choose T2 Copper |
|---|---|---|---|
| Deep Drawing / Complex Forming | Best | Good | Excellent |
| Maximum Ductility Needed | Best | Good | Excellent |
| Decorative Golden Color | Best | Good | Not applicable |
| High Strength Required | Good | Best | Not suitable |
| Excellent Machinability | Not suitable | Best | Not suitable |
| Maximum Conductivity | Not suitable | Not suitable | Best |
Packaging & Delivery
To ensure your H68 copper rectangular bars arrive in optimal condition and meet your forming and finishing needs, we employ a professional packaging solution tailored to your product shape and surface finish requirements. The bars are carefully sorted by size, tempering condition, and surface finish, then layered with protective padding to prevent direct metal-to-metal contact and surface damage. Each bundle is secured with abrasion-free strapping and wrapped with multiple layers of moisture-proof kraft paper and polyethylene film. For bars with polished or decorative surface finishes, we additionally use acid-free tissue paper or VCI (vapor phase corrosion inhibitor) film for individual packaging to prevent oxidation and surface degradation. For international shipping, we use robust and durable sea-safe plywood crates with internal support structures, foam padding, and desiccant packets to control humidity.
Our Team
The company has obtained iso9001:2015 quality management system certification, iso14001:2015 environmental management system certification, ISO 45001:2018 occupational health and safety management system certification, PED 2014/68/EU Pressure Equipment Directive certification, DNV-GL material manufacturer certification, SGS product quality certification and other certificates and qualifications. We strictly implement GB/T 3639-2009, ASTM A519, DIN2391, JIS G3445 and other national and international standards to ensure the quality of our products.
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