C17200 Beryllium Copper Strip H04
Grade Equivalents: UNS C17200 / CuBe2 / Alloy 25 / RWMA Class 4 / EN CW103C / ASTM B194 TD04
Application Focus: High-Stress Electronic Springs, Miniature Contact Blades, Relay Switches, & Belleville Washers
Executive Standards: ASTM B194, ASTM B248, SAE J463, ISO 5182
Size Range: Thickness 0.05mm - 2.5mm, Width up to 300mm, Precision Slit Coils and Cut Strips
Temper Condition: H04 / TD04 (Extra Hard Spring Temper / Cold-Rolled Baseline)
Core Purpose: High As-Rolled Strength Combined with Maximum Spring Resilience for Stamped Components
Quality Assurance: ISO9001:2015, RoHS Compliant, MTC 3.1 Certified
Description
C17200 Beryllium Copper Strip H04 — Full Hard Spring Temper for High-Reliability Stamped Components
C17200 Beryllium Copper Strip H04, sometimes referred to as Alloy 25 or CuBe2, is a standard copper-beryllium alloy strip with a beryllium content of 1.80–2.00%, making it one of the strongest commercial copper alloys. The H04 full hard temper, which offers 36–40 HRC hardness and rolled tensile strength of 1140–1310 MPa, is obtained by 37% cold reduction. Founded in 1997, Dongguan Jiaye Dingsheng Precision Casting & Forging Co., Ltd. specializes in manufacturing beryllium copper strips with thicknesses ranging from 0.05 to 2.5 mm and widths up to 300 mm that satisfy ISO 9001 and RoHS regulations.
What Is C17200 Beryllium Copper Strip H04?
For spring-contact components that need to have a balance between mechanical strength and electrical conductivity, UNS C17200 (Alloy 25) is frequently used. Cold rolling annealed strips to complete hardness without post-aging treatment results in H04/TD04 temper. Production processes are made simpler since the material is prepared for direct stamping usage without the need for further heat treatment. It complies with ISO 5182, ASTM B194, ASTM B248, SAE J463, and CW103C (EN) and RWMA Class 4 requirements.
Technical Specifications
| Parameter | Value |
|---|---|
| Grade / UNS | C17200 / Alloy 25 / CuBe2 |
| Temper | H04 / TD04 (Full Hard / Extra Hard Spring) |
| Beryllium (Be) Content | 1.80 – 2.00% |
| Co + Ni (min.) | 0.20% |
| Base Metal | Copper (Balance) |
| Tensile Strength (As-Rolled H04) | 1140 – 1310 MPa |
| Tensile Strength (After Aging) | 1379 – 1480 MPa |
| Hardness (As-Rolled H04) | 36 – 40 HRC / 200 – 260 HV |
| Electrical Conductivity | 18 – 22% IACS |
| Thermal Conductivity | 105 W/m·K |
| Density | 8.26 g/cm³ |
| Melting Point | 865 – 980°C |
| Grain Size | < 0.035 mm (controlled) |
| Thickness Range | 0.05 – 2.5 mm |
| Width | Up to 300 mm |
| Dimensional Tolerance | ±0.002 mm (micro-precision) |
| Standards | ASTM B194, ASTM B248, SAE J463, ISO 5182 |
| Certifications | ISO 9001, RoHS, REACH, MTC 3.1 |
Key Performance Advantages
For precise processing, C17200 Beryllium Copper Strip H04 offers consistent mechanical and physical characteristics. For direct stamping, the complete hard temper offers steady stiffness and an elastic limit. Its non-ferrous, non-magnetic copper matrix adjusts to specific operating conditions, and its tensile strength is equivalent to that of regular spring steel. After prolonged cycle use, the material prevents spring fatigue by maintaining a steady contact pressure. It is suitable for explosive and precision instrument scenarios due to its non-magnetic and non-sparking properties. It also extends component service life by resisting chemical corrosion and tarnish.
Application Scenarios
Numerous precise industrial areas with stringent performance criteria can use this material. It operates as battery contacts and EMI shielding gaskets for data center and telecom connections. Relay washers and tiny contact blades for electrical components are also made using it. It accommodates safety and powertrain sensors with steady vibration and heat resistance for car manufacture. It is utilized for structural contact components and non-magnetic instruments in the aerospace and defense sectors.
Quality Control Process
Every completed strip is inspected throughout the whole process, from raw materials to final products. We do ASTM-standard tensile and hardness testing, micro-precision dimensional calibration, surface defect inspection, grain size detection, and ICP-OES chemical analysis. To guaranty total material traceability, each batch is supplied with comprehensive test results.
Customization and Supply Options
We provide slit coils and cut strips with customizable thickness, width, hardness and surface finish. All customized parameters can be adjusted per client drawings. We offer 24-hour quotation service, and in-stock goods can be delivered within 3–5 days with complete customs documents.
Frequently Asked Questions
Q1: What is the difference between H04 and TH04 temper?
A1: H04 is cold-rolled full hard status without aging. TH04 is processed with post-rolling aging to achieve higher tensile strength up to 1480 MPa.
Q2: Can C17200 H04 strip be bent after delivery?
A2: Yes. It supports moderate cross-grain forming. Bending radii shall be calculated based on thickness to prevent cracking for complex processing.
Q3: Will aging treatment affect part dimensions?
A3: Yes. The material has 0.2% volume contraction during aging, which needs to be considered in die design.
Q4: Is solid beryllium copper strip hazardous?
A4: Solid strips cause no hazard in regular handling. Protective ventilation is only required for grinding, welding and other dust-generating processes.
Q5: What documents are provided for each order?
A5: Every shipment is attached with EN 10204 3.1 MTC covering composition, hardness, conductivity and dimensional data.
Contact Us
For customized specifications, bulk purchase inquiries and technical support of C17200 Beryllium Copper Strip H04, please send your detailed requirements to js01@jstongcai.com.cn. We will send you a formal quotation within 24 hours
