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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
Plastics Materials

3D Printing in Resin

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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Resin

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
Casting sculptures, jewelry embedding, high-gloss coatings, roofing tiles, adhesives, automotive components, electronic encapsulation, dental fillings
Strengths
Chemical resistance (acids/alkalis/solvents), Durability (high impact resistance), Thermal/sound insulation, Optical clarity, Strong adhesion to various materials
Weaknesses
Heat sensitivity (degrades above 80-120°C), Brittleness at low temperatures, VOC emissions during curing, UV degradation (yellowing/weakening)
Process compatibility
Compression molding, encapsulation, injection molding, extrusion, SLA 3D printing, hand-pouring
Surface Treatment
Sanding, polishing, acetone vapor smoothing, sodium etching, UV-resistant lamination, epoxy sealing, painting

Characteristics

Price
$20-300/kg (standard: $20-50/kg, premium/medical: $100-300/kg)
Lead Time
5-25 days (standard: 5-10 days, custom formulations: 15-25 days)
Wall Thickness
0.1-15mm (casting/art: 0.5-10mm, structural: 2-15mm, thin films: 0.1-0.5mm)
Tolerances
±0.1-0.5mm (±0.004-0.02") (casting/handwork: ±0.5mm, injection molding: ±0.1mm, SLA printing: ±0.15mm)
Max part size
Unlimited length × 2000mm width (casting/extrusion), 600×600×200mm (molding), 500×500×500mm (SLA printing)

Resin

Resin Material Properties
Resin Material Grades and Characteristics
Category & Representative ModelsKey CharacteristicsPrimary Applications
UV Pressure-Sensitive Adhesive Resins
(e.g., MPUA4920, Resin21SE)
• Functionality: 1-2 groups
• Viscosity: 500–60,000 cps
• Curing: UV/EB dual-curing
• Peel Strength: High tack with stringing effect
• Optically clear adhesive tapes
• Medical conductive films
• Electronic component fixation
UV Elastic Resins
(e.g., Resin300, Resin600)
• Elongation at Break: 250%–500%
• Hardness: 50A–60A (Shore)
• Resilience: High-rebound soft texture
• Compatibility: Full monomer system adaptation
• Flexible sealants
• Shock-absorbing pads
• Stretchable electronic encapsulation
Precision Casting Resins
(e.g., True Cast Resin)
• Ash Content: ≤0.03%
• Applicable Thickness: ≤5mm
• Thermal Expansion: Near-zero shrinkage
• Surface Finish: Ra≤1μm
• Jewelry micro-molds
• Dental implant prototypes
• Aerospace precision components
Flame-Retardant Epoxy
(e.g., RIPOXY® S-520EX)
• Oxygen Index (OI): 28
• Chemical Resistance: Acids/alkalies/solvents
• HDT: 110-115°C
• Flexural Strength: 135-150 MPa
• Chemical corrosion pipelines
• Flame-retardant insulation
• Marine corrosion chambers
High-Weathering Epoxy
(e.g., Wenyou LE/LH)
• Compressive Strength: 140-185 N/mm²
• Thermal Degradation: 320°C
• UV Stability: >10 years outdoor
• Viscosity: 9,500-15,500 mPa·s
• High-voltage transformers
• Outdoor insulators
• Aerospace sensors
Key Performance Parameters of Resins
PropertyTest StandardUV PSA ResinsCasting ResinsFlame-Retardant Epoxy
Viscosity (25°C)ISO 3219500–60,000 cps3.0–5.0 dPa·s
Tensile StrengthISO 52770–85 MPa
Flexural StrengthISO 178135–150 MPa
HDT @0.45 MPaASTM D648110–115°C
Elongation at BreakISO 5274.0–6.0%
Oxygen Index (O.I.)ISO 458928
Ash ContentASTM D5630≤0.03%

Critical Processing Requirements

UV Curing Control: Mono-functional resins (e.g., MPUA4920) provide high tack; difunctional resins enhance cross-linking elasticity

Low-Ash Casting: 0.03% ash content (vs conventional 0.1-0.5%) prevents casting defects and ensures complete mold burnout

Epoxy Curing Cycle: High-temp curing (120°C/2h) decomposes residual monomers for medical/food-contact compliance

Performance Limitations & Solutions

Chemical Vulnerability: Epoxy resins swell in ketones/aromatics; reinforced formulations maintain integrity in corrosive environments

UV Degradation: High-weathering epoxies maintain stability through aromatic backbone modification and UV absorbers

Precision Limitations: ≤5mm casting thickness requires nano-silica additives to control viscosity-induced flow restrictions

Safety & Compliance

Medical Certification: UV resins require USP Class VI and FDA 21CFR 177.2415 compliance for implant applications

Flame Standards: Industrial epoxies must meet ASTM E84 Class B flame spread ratings for building codes

Electrical Safety: Transformer encapsulation resins require IEC 60296 dielectric strength ≥30 kV/mm

RESIN for 3D Printing 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 3D Resin 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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FAQs

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.
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    GALLERY OF CNC MACHINED PARTS
  • Could I have a look at your production facility for sliver contacts?
    Cold Heading & Stamping Workshop

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