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
Plastics Materials
3D Printing in PLA
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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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
- 3D printing prototypes, biodegradable packaging, medical implants/disposables, consumer products, educational models
- Strengths
- Biodegradable (compostable under industrial conditions), Low warpage & easy printing processability, FDA-approved for food contact applications, Minimal odor emission during processing
- Weaknesses
- Low heat resistance (softening at 55-60°C), Brittle fracture behavior (impact resistance), Degrades in humid environments
- Process compatibility
- FDM/FFF 3D printing (primary), injection molding, CNC machining
- Surface Treatment
- Acetone vapor smoothing, sanding, priming/painting, epoxy coating
Characteristics
- Price
- $20-50/kg ✦ Cost-efficient vs. engineering plastics
- Lead Time
- <24 hours (3D printing) / 5-8 days (molding)
- Wall Thickness
- 0.8-1.2mm (structural FDM) / 1.0-3.0mm (molded)
- Tolerances
- ±0.5mm (±0.02") FDM / ±0.2mm (±0.008") molding
- Max part size
- 500 x 500 x 500 mm (industrial FDM) / 300 x 300 x 150 mm (molded)
PLA
| Grade & Composition | Key Characteristics | Primary Applications |
|---|---|---|
| General Purpose PLA (e.g., REVODE201) | • Density: 1.25–1.28 g/cm³ • Tensile Strength: 40–60 MPa • HDT @0.45 MPa: 55–60°C • Melt Flow Rate: 10–30 g/10min | • Food packaging (utensils, films) • Disposable tableware • Stationery & household items |
| Enhanced PLA (Glass fiber/nanocellulose modified) | • Flexural Modulus: 3–4 GPa • HDT @0.45 MPa: 80–120°C • Impact Strength: 8–25 kJ/m² • Degradation Cycle: 3–24 months | • Orthopedic fixation materials • High-temperature structural parts • Precision 3D printing components |
| 3D Printing Grade (e.g., Stratasys filaments) | • Printing Temperature: 170–230°C • Dimensional Stability: ±0.02 mm • Oxygen Transmission: 15–25 cm³·mm/(m²·day·atm) • Bio-degradation: 6–12 months | • Rapid prototyping • Educational models/toys • Medical anatomical models |
| Property | Test Standard | General PLA | Enhanced PLA | 3D Printing Grade |
|---|---|---|---|---|
| Tensile Strength | ISO 527 | 40–60 MPa | ≥70 MPa | 50–70 MPa |
| Elongation at Break | ISO 527 | 4%–10% | 5%–15% | 3%–8% |
| Flexural Modulus | ISO 178 | 100–150 MPa | 3000–4000 MPa | 2000–3500 MPa |
| HDT @0.45 MPa | ASTM D648 | 55–60°C | 80–120°C | 55–65°C |
| Notched Impact Strength | ISO 179 | 2–10 kJ/m² | 8–25 kJ/m² | 2–15 kJ/m² |
| Melt Flow Rate (190°C/2.16kg) | ISO 1133 | 10–30 g/10min | 5–20 g/10min | 2–40 g/10min |
Critical Processing Requirements
•Moisture Control: Mandatory drying at 45-60°C for 4-6 hours (moisture ≤0.025%) to prevent hydrolysis degradation[2,8](@ref)
•Melt Temperature: 170–230°C (±5°C tolerance) - degradation occurs above 240°C with molecular weight loss[3,6](@ref)
•Cooling Rate: Controlled crystallization at 80-110°C mold temperature for enhanced mechanical properties[5](@ref)
Performance Limitations & Solutions
•Thermal Stability: Standard PLA softens above 50°C; glass fiber modification increases HDT to 120°C[5,9](@ref)
•Brittleness Control: Adding 15-20% TPU or PBAT improves impact strength from 5 kJ/m² to 25 kJ/m²[6,9](@ref)
•Degradation Rate: Industrial composting at 58°C/90% RH achieves 6-month degradation vs 2+ years in natural conditions[2,5](@ref)
Safety & Compliance
•Food Contact: Complies with FDA 21 CFR 177.1520 and EU 10/2011 for food packaging applications[2,5](@ref)
•Medical Certification: USP Class VI compliant for surgical implants with 3-6 month absorption cycle[5,8](@ref)
•Biodegradation Standards: Certified under ASTM D6400 & EN 13432 for industrial composting[2,5](@ref)
PLAs 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.
Customer Case
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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.
- Why 5-Axis CNC Machining Has Superior Advatages?"5-Axis" generally refers to the ability of a CNC machine to move the tool in five directions, which belongs to a high precision production technology.
- GALLERY OF CNC MACHINED PARTSGALLERY OF CNC MACHINED PARTS
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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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