Beryllium Copper Bushing For Mold
Grade Equivalents: UNS C17200 / CuBe2 / Alloy 25 / RWMA Class 4 / EN CW101C / DIN 2.1247
Application Focus: Injection Mold Sprue Bushings, Ejector Guide Sleeves, Hot Runner Nozzle Bushings, & Mold Lifter Bushings
Executive Standards: ASTM B196, AMS 4650, SAE J463, ISO 5182
Size Range: Outer Diameter 10mm - 300mm, Inner Diameter 6mm - 250mm, Precision Machined to Custom Mold Drawing Specs
Temper Condition: Solution Heat-Treated (TB00) and Precipitation Hardened (AT / TF00)
Core Purpose: Rapid Thermal Stabilization, Superior Anti-Galling Slide Guidance, and High Thermal Efficiency
Quality Assurance: ISO9001:2015, Precision Mold Component Standards, RoHS Compliant, EN 10204 3.1 Certified
Description
Beryllium Copper Bushing For Mold — C17200 Precision Mold Components for High-Speed Injection Tooling
Our beryllium copper bushing for mold is a precision component made of C17200 copper-beryllium alloy with 1.80–2.00% beryllium content. It solves common practical issues in injection mold production, including thermal imbalance at resin gates and friction seizure on guide surfaces. The component achieves 36–42 HRC hardness after precipitation hardening treatment, and its thermal conductivity ranges from 105–130 W/m·K, which is three to four times that of regular tool steel. Each bushing is given with EN 10204 3.1 test certifications and is machined to ±0.003mm concentricity by a reputable copper alloy plant with over 25 years of industry expertise.
What Is a Beryllium Copper Mold Bushing?
A useful sleeve placed in injection molds at critical mechanical and thermal locations is called a beryllium copper mold bushing. Ejector pins, guide pillars, hot runner nozzles, and sprue channels are examples of moveable mold components that it connects. Conventional bronze and steel bushings easily accumulate local heat to cause plastic part deformation, and gall against steel pins under long-cycle friction. The beryllium copper bushing for mold combines stable hardness and efficient heat dissipation to improve these two common defects in mold operation.
Beryllium Copper Bushing For Mold Specifications
| Parameter | Value |
|---|---|
| Grade | UNS C17200 / CuBe2 / Alloy 25 / EN CW101C / DIN 2.1247 |
| Standard | ASTM B196 / AMS 4650 / SAE J463 / ISO 5182 |
| Beryllium Content | 1.80 – 2.00% |
| Co+Ni (min) | 0.20% |
| Co+Ni+Fe (max) | 0.50% |
| Temper Condition | TB00 (Solution Treated) / AT / TF00 (Precipitation Hardened) |
| Hardness (Aged AT) | 36 – 42 HRC / 350 – 420 HV |
| Tensile Strength | 1170 – 1400 MPa |
| Yield Strength | 980 – 1200 MPa |
| Thermal Conductivity | 105 – 130 W/m·K |
| Outer Diameter Range | 10mm – 300mm |
| Inner Diameter Range | 6mm – 250mm |
| Concentricity Tolerance | ±0.003mm |
| Bore Surface Roughness | Ra 0.2 – 0.4 µm |
| Magnetic Permeability | < 1.001 (Non-Magnetic) |
| Quality Certification | ISO 9001:2015 / RoHS / REACH / EN 10204 3.1 |
Key Performance Advantages
Faster Cooling: The high thermal conductivity shortens the moulding cooling time by 20-40%, which speeds up the heat dissipation of gates and sprue channels, hence improving the production efficiency.
Anti-Seizure Performance : During long term cycle use the surface develops a long lasting oxide layer that provides smooth friction on hardened steel parts and prevents seizures.
Resists Distortion: Yield strength ranging from 980-1200 MPa helps resist oval distortion under constant clamping pressure to maintain consistent fitting clearance.
Temperature Control: It stabilises the temperature within the mould to prevent warping and plastic sink marks.
Corrosion Resistance: Resistant to corrosion from PVC, PC/ABS and other specific resins.
Magnetic Clamping Compatibility: Low magnetic permeability allows compatibility with commonly used magnetic clamping systems.
Application Scenarios
The beryllium copper bushing for mold fits multiple mold application scenarios. It works as sprue bushings to stabilize gate temperature and avoid plastic wire drawing in multi-cavity molds, and serves as hot runner nozzle bushings to keep consistent melt flow. As ejector guide sleeves, it maintains precise clearance for high-speed circulating ejection. It is also applicable to die casting plunger bushings resisting thermal shock and abrasion, and mold lifter bushings providing stable low-friction guidance under repeated temperature changes.
Quality Control Process
All products undergo complete pre-delivery inspection procedures. We conduct OES chemical analysis to verify raw material composition, Rockwell hardness testing to confirm temper status, and eddy current testing to check heat dissipation performance. Ultrasonic flaw detection screens internal material defects, and CMM precision inspection calibrates dimensional accuracy and surface finish. All inspection data is sorted into official EN 10204 3.1 certificates for batch delivery.
Custom Machining & Supply Options
We support customized outer diameter, inner diameter and structural dimensions per customer drawings, with standard H7/g6 precision fitting. Two temper states are optional: TB00 solution-treated for secondary processing and AT fully hardened for direct installation. Stock products are delivered in 3–5 days, and custom orders are quoted within 24 hours, with complete compliance documents provided on demand.
Frequently Asked Questions
Q1: What is the potential cycle time savings of the mold bushing?
A1: Compared to steel bushings, it shortens mold cooling time by 15–30%, with a more noticeable increase in hot runner mold production efficiency.
Q2: Is it safe to use a solid bushing made of beryllium copper?
A2: The solid completed products may be safely installed and used on a regular basis. Protective measures are only necessary for cutting and polishing procedures which produce dust.
Q3: Does it require lubrication for daily use?
A3: The product is anti-galling and allows for dry operation. It may increase its service life when properly lubricated with high temperature grease.
Q4: What is the difference between C17200 and C17500 mould bushing?
A4: C17200 has higher hardness and wear resistance for heavy load mechanical mould constructions. C17500 is used for the case where heat dissipation is the first concern.
Q5: What documentation is included with the shipment?
A5: EN 10204 3.1 test results are supplied with each batch and ISO, RoHS and REACH certification documentation may be provided on demand.
Contact Us
Send your mold drawings and dimensional customization demands to js01@jstongcai.com.cn. Our team will sort out tailored solutions for your beryllium copper bushing for mold and provide accurate quotations within 24 hours.
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