Precision Machining
- CNC Machining Service
- CNC Milling
- CNC Turning
- Automatic Turning
- Machining Screw/Rivet
- Wire EDM Machining
- Casting & CNC
- Aluminum Profile & CNC
- Cold Heading & CNC
LML Metal Products Ltd.No. D309, Yunchuang E Valley, No. 3 Huanshi West Road, Tangxia Town, Dongguan City, Guangdong,China
(86) 17833674102dlynn9527@gmail.com
Materials
CNC Machining in PEEK
High strength and toughness, fatigue resistant. Alloy steels incorporate additional alloying elements beyond carbon, leading to heightened hardness, toughness, fatigue resistance, and wear resistance
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PEEK
Designers and engineers frequently choose aluminum and aluminum alloys for CNC machining and CNC milling parts. Makes sense. This all-purpose metal has been proven to offer:
- * Excellent machinability
- * High strength
- * Hardness
- * Heat tolerance
- * Corrosion resistance
- * Electrical conductivity
- * Low weight
- * Low cost
- * Overall versatility
Description
- Applications
- Medical implants, aerospace bushings/bearings, semiconductor wafer carriers, oil & gas valves, nuclear components
- Strengths
- Biocompatible & sterilization resistant (autoclavable), Continuous service at 250°C (482°F), Exceptional chemical resistance (acids/solvents/hydrocarbons), V-0 flame rating (UL94 certified)
- Weaknesses
- High material cost ($500-700/kg), Complex processing requiring specialized equipment, Susceptible to UV degradation outdoors
- Process compatibility
- Injection molding (high-temp presses), CNC machining, 3D printing (FFF/PEEK filament)
- Surface Treatment
- Plasma etching, micro-blasting, electropolishing, vapor polishing
Characteristics
- Price
- $500-700/kg ✦ 8-12x cost of engineering plastics
- Lead Time
- 30-45 days (molding) / 10-15 days (machining)
- Wall Thickness
- 1.5-5mm (molded) / 3mm min (3D printed parts)
- Tolerances
- ±0.08mm (±0.003") machining / ±0.25mm (±0.01") molding
- Max part size
- 400×400×500mm (molding) / 300×300×600mm (CNC)
PEEK
| Grade & Composition | Key Characteristics | Primary Applications |
|---|---|---|
| Unfilled PEEK (e.g., PEEK-1000) | • Density: 1.30-1.32 g/cm³ • Tensile strength: 90-110 MPa • HDT @1.82 MPa: 152°C • Low friction (μ=0.34) | • Chemical seals • Electrical insulators • Sterilizable surgical tools |
| 30% Glass Fiber Reinforced (e.g., PEEK-GF30) | • Density: 1.45-1.51 g/cm³ • Tensile strength: 160-170 MPa • HDT @1.82 MPa: 315°C • 20× improved creep resistance | • Aerospace brackets • Engine components • High-temperature bearings |
| 30% Carbon Fiber Reinforced (e.g., PEEK-CA30) | • Density: 1.40-1.45 g/cm³ • Tensile strength: 200-220 MPa • CTE: 8×10⁻⁶/°C • Enhanced conductivity | • Medical implants • Robotic arms • Semiconductor wafer carriers |
| Modified Sliding Grade (10% CF + 10% PTFE + 10% Graphite) | • Ultra-low friction (μ=0.15) • Superior abrasion resistance • Service temp: -30°C to 250°C | • Self-lubricating bearings • Pump seals • Hydrogen system valves |
| Property | Test Standard | Unfilled PEEK | 30% GF PEEK | 30% CF PEEK |
|---|---|---|---|---|
| Tensile Strength | ISO 527 | 90-100 MPa | 160-170 MPa | 200-220 MPa |
| Flexural Modulus | ISO 178 | 3.6 GPa | 9.0 GPa | 12.5 GPa |
| HDT @1.82 MPa | ISO 75 | 152°C | 315°C | 315°C |
| CTE | DIN 53752 | 47×10⁻⁶/K | 21×10⁻⁶/K | 8×10⁻⁶/K |
| Volume Resistivity | IEC 60093 | 10¹⁶ Ω·cm | 10¹⁵ Ω·cm | 10⁴–10⁶ Ω·cm |
| LOI | ISO 4589 | 35% (all grades) | ||
Critical Processing Requirements
•Drying: Mandatory at 150°C for 3-5 hours (moisture ≤0.02%) to prevent bubbling and strength loss[7](@ref)
•Melt Temperature: 380-400°C (±5°C tolerance) – degradation occurs above 420°C[5](@ref)
•Stress Relief: Post-molding annealing at 200°C (2-4 hours) optimizes crystallinity (30-40%)[3](@ref)
Medical Applications
•Implants: Elastic modulus 3.6 GPa matches human bone, prevents stress shielding in joint replacements (20+ year lifespan)[9](@ref)
•Sterilization: Withstands 3,000+ steam sterilization cycles at 134°C without degradation[1](@ref)
Aerospace Advantages
•Weight Reduction: 20% lighter than metal alloys while maintaining strength at 260°C continuous service[6](@ref)
•Radiation Resistance: Tolerates γ-radiation doses up to 1100 Mrad (nuclear reactor levels)[7](@ref)
Aluminum Alloys for Machining
LML offers several aluminum alloys in its long list of available manufacturing materials. Two of those alloys are especially well-suited material options for CNC machining, whether milling or turning: Aluminum 6061 and 7075.Aluminum 7075 T651 and T7: Benefits include high strength, hardness, low weight, corrosion resistance, and high heat tolerance. See data sheet for more information.Aluminum 2024 T3: This high-strength alloy offers a high strength-to-weight ratio and high corrosion resistance. See data sheet for more information.GET INSTANT QUOTE
Gallery of Anodized Parts Manufactured by LML
The color of anodized finishes may exhibit some degree of variation due to standard alloy tolerance differences. Please refer to the color scheme below to observe the range of available colors.
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Read more about quality assuranceFAQs
LML takes the stress out of manufacturing by guaranteeing the quality and consistency of every part. Each order is dimensionally and visually inspected by our in-house quality control team to make sure it meets the LML Standard. If you’re not satisfied with your order, we’ll remake your parts as fast as possible, free of charge, or refund you - whichever you prefer.
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LML Metal Products Ltd.No. D309, Yunchuang E Valley, No. 3 Huanshi West Road, Tangxia Town, Dongguan City, Guangdong,China
(86) 17833674102dlynn9527@gmail.com
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