TR90 vs Carbon Fiber vs Titanium Sports Sunglasses | OEM Frame Guide
If you're sourcing custom sports sunglasses—whether for a cycling brand, an outdoor retail chain, or a private-label fitness line—frame material is one of the first decisions that shapes everything downstream: price point, target audience, tooling complexity, and the story your product tells on shelf. As a lens manufacturer working with OEM and ODM partners worldwide, we're often asked the same question: which material is right for my product? This guide breaks it down clearly so you can walk into your next sourcing conversation with confidence.
- 🎯 The Material Decision Most Brands Get Wrong
- 🧪 TR90: Mass-Sport Performance at Production Scale
- 🏎️ Carbon Fiber: Engineering Story as Brand Asset
- ⚙️ Titanium: Precision Engineering for Long-Ownership Categories
- 📊 Three-Material Comparison Table
- 🎯 Use-Case Decision Matrix
- ☑️ Sourcing Checklist: Sports Sunglasses Frame Material
- 🔗 Karuson Production Capabilities
- 📋 Production Specifications
- 📩 Start Your Sports Eyewear Project
- ❓ FAQ: Sports Sunglasses Frame Materials for OEM
🎯 The Material Decision Most Brands Get Wrong
A frame material mismatch doesn't show up on a product brief — it shows up at returns. A golf brand discovers its beta-titanium frames are overkill for a $60 retail price point. A cycling startup locks into TR90 tooling before realizing their target consumer reads carbon fiber spec sheets before buying. A surf label gets saltwater corrosion complaints six months after launch because no one checked the hinge material.
Frame material selection drives three things simultaneously: the physical performance of the product, the brand position it can credibly hold, and the production economics that determine whether the margin works. Getting alignment across all three — before tooling investment — is the decision this guide is designed to support.
🧪 TR90: Mass-Sport Performance at Production Scale
Best fit: High-volume active-use eyewear, $20–$80 retail, first-launch sport lines
TR90 is a thermoplastic polyamide resin (Swiss origin, registered designation). Its mechanical properties are defined by a combination of polyamide backbone flexibility and rubber-phase impact absorption — which is why frames return to their original geometry after being bent 180°, and why they absorb a direct impact without shattering.
| Property | Value |
|---|---|
| Frame weight | 15–18g |
| Flex memory | Returns to shape after >180° deflection |
| Impact resistance | Passes ANSI Z87.1 high-velocity impact |
| Operating temperature | –40°C to +120°C |
| Chemical resistance | Resistant to sweat, sunscreen, saline |
| Color options | Full-spectrum injection (Pantone-matched) |
Why TR90 dominates volume sport eyewear: The injection-molding process allows wraparound frame geometries, integrated nose pads, and ventilated temple structures without adding per-unit cost. Complex mold features that would require secondary machining in metal are resolved in a single injection cycle. At a production run of 500 units, per-unit tooling amortization is substantially lower than for carbon fiber or titanium.
Color consistency across production runs is deterministic — TR90 is pigmented before injection, not coated after, so colorway accuracy does not degrade across batches. For brands where a specific colorway is part of brand identity, this matters operationally.
Limitation to account for: TR90 surface finish reads as plastic under close inspection. In retail segments above $80 where tactile premium perception influences purchase, this is a positioning ceiling, not a product defect.
🏎️ Carbon Fiber: Engineering Story as Brand Asset
Best fit: Performance cycling, triathlon, open-water swimming, $80–$200 retail
Carbon fiber frames use woven carbon fiber reinforced polymer (CFRP) — carbon filaments bonded in an epoxy matrix, typically in a 2×2 twill or plain weave pattern. The resulting structure has a tensile strength of approximately 600–700 MPa at a density of 1.6 g/cm³, versus steel at 400–500 MPa at 7.8 g/cm³. That ratio is what produces frames in the 8–12g range without structural compromise.
| Property | Value |
|---|---|
| Frame weight | 8–12g |
| Tensile strength | ~600–700 MPa |
| Vibration damping | High (CFRP absorbs high-frequency vibration) |
| Corrosion resistance | Full (epoxy matrix is chemically inert) |
| Color range | Black and very dark tones only |
| Surface feature | Woven texture visible — distinctive on-shelf |
The mechanical case for cycling and triathlon: Road vibration transmitted through handlebars reaches the frame at 20–200 Hz. CFRP's internal fiber structure dissipates this energy through inter-layer friction — measurably reducing fatigue over 2–4 hour rides compared to rigid plastics. For triathlon transitions, the 8–12g weight class versus TR90's 15–18g reduces total gear weight without requiring a separate sport-specific SKU.
The brand case: The woven carbon texture is recognizable to a performance cycling or triathlon consumer before they read a spec sheet. It communicates "engineered for output" in a way that an injection-molded frame cannot replicate. This is a legitimate brand asset, not just aesthetics — but only if the target consumer is in a category where carbon fiber carries meaning (cycling, rowing, triathlon). In trail running or team sports, it adds cost without adding perceived value.
Limitation to account for: Carbon fiber is brittle under lateral torsion. In a direct side-impact (e.g., a crash), CFRP frames can fracture rather than deform. TR90 and titanium both outperform CFRP in real-world impact scenarios involving twisting forces.
⚙️ Titanium: Precision Engineering for Long-Ownership Categories
Best fit: Golf, fly fishing, sailing, premium lifestyle sport, $120–$400+ retail
Titanium frames are produced in either commercially pure titanium (Grade 1–4, per ASTM B265) or beta-titanium alloy (Ti-15V-3Cr-3Al-3Sn or similar). Beta-titanium has a Young's modulus of approximately 80 GPa versus pure titanium at 105 GPa — the lower modulus creates the spring-flex characteristic that allows temples to deflect and return repeatedly without fatigue fracture.
| Property | Value |
|---|---|
| Frame weight | 15–22g |
| Flex memory | High (beta-Ti: ~80 GPa modulus) |
| Fatigue life | >100,000 flex cycles without fracture |
| Corrosion resistance | Excellent (TiO₂ passive oxide layer) |
| Hypoallergenic | Yes — no nickel, no allergic sensitization |
| Color options | Moderate (PVD physical vapor deposition coating) |
Why titanium fits long-ownership sport categories: Golf, fly fishing, and premium sailing are categories where the consumer expects the hardware to outlast the lenses. They are not impulse buyers — they research hypoallergenicity, ask about the hinge mechanism, and expect a frame that accepts multiple lens replacements over years of use. Titanium's passive TiO₂ surface layer prevents corrosion in saltwater and sweat environments without additional coating, which means the frame maintains appearance over a product lifecycle that cheaper materials cannot match.
The design language is also distinct: titanium enables thin temples, precision wire-rimless constructions, and a "refined sport" aesthetic that TR90 injection geometries cannot produce. For lifestyle brands targeting the 35–55 demographic with higher disposable income, this aesthetic positioning is a revenue driver.
Limitation to account for: Titanium does not suit fully-wrapped wraparound sport frame designs. The machining tolerances required for complex three-dimensional geometries increase production time and per-unit cost in ways that are not recoverable at price points below $100 retail.
📊 Three-Material Comparison Table
| Factor | TR90 | Carbon Fiber | Titanium |
|---|---|---|---|
| Frame weight | 15–18g | 8–12g | 15–22g |
| Flex / memory | Excellent | Low (rigid) | High (beta-Ti) |
| Impact resistance | Excellent | Moderate (no lateral) | Good |
| Corrosion resistance | Good | Excellent | Excellent |
| Design geometry freedom | High | Medium | Medium |
| Color range | Full spectrum | Black / very dark | Moderate (PVD) |
| Hypoallergenic | Generally yes | Yes | Fully (no Ni) |
| Production process | Injection molding | CFRP layup / forging | CNC machining |
| Typical MOQ | 300–500 pcs | 200–500 pcs | 100–300 pcs |
| Retail price range | $20–$80 | $80–$200 | $120–$400+ |
| Brand positioning | Active / mass sport | Performance / racing | Premium / lifestyle |
🎯 Use-Case Decision Matrix
Cycling (road / gravel): Long rides require vibration damping and ultra-low weight. Carbon fiber is the performance-justified choice. TR90 is the correct material for mid-range cycling SKUs at $40–$80.
Trail running / MTB: Repeated drops demand flex memory and impact absorption. TR90's rubber-phase impact resistance outperforms carbon fiber in lateral impact scenarios.
Triathlon / open water: Saltwater corrosion and transition-speed weight are the two constraints. Carbon fiber with corrosion-resistant titanium or stainless hinges is the correct specification.
Golf: Long wear duration, hypoallergenic requirement, premium lifestyle positioning. Beta-titanium with PVD coating matches category consumer expectations and price tolerance.
Fly fishing / sailing: Multi-hour saltwater exposure combined with polarized lens priority. Titanium or carbon fiber, paired with TAC or CR-39 polarized lenses meeting EN ISO 12312-1 transmission requirements.
Skiing / snow sports: Cold-temperature flex retention is critical. TR90 maintains elastic behavior at –40°C; many engineering plastics become brittle below –20°C. TR90 is the correct material.
Premium lifestyle / everyday active: TR90 covers $20–$80. Titanium covers $120+ for brands targeting consumers who evaluate products on material longevity.
☑️ Sourcing Checklist: Sports Sunglasses Frame Material
- [ ] Define retail price point before selecting material (drives feasibility of Ti or CFRP)
- [ ] Confirm target sport — match material to mechanical stress type, not aesthetics alone
- [ ] Request material test data: impact rating (ANSI Z87.1 or EN ISO 12312-1) from supplier
- [ ] Check lens compatibility with chosen frame: rimless Ti requires drilled PC or nylon lenses
- [ ] Confirm hinge material matches frame corrosion resistance (especially for saltwater categories)
- [ ] Request color-consistency samples across 3 production batches (critical for TR90 brand colorways)
- [ ] Verify factory holds relevant certifications for your target market (CE, FDA, ISO 9001)
- [ ] Confirm tooling ownership terms before paying tooling deposit
🔗 Karuson Production Capabilities
Karuson manufactures sports eyewear frames in TR90, carbon fiber, titanium, acetate, PC, and metal alloys across production facilities in Dongguan and Guangzhou. All frames are produced under ISO 9001 quality management and certified for EN ISO 12312-1 (EU), ANSI Z87.1 (US), and AS/NZS 1067 (Australia/NZ). Rapid prototyping is available within 7–10 days for TR90 and metal styles, and 10–15 days for carbon fiber and titanium — allowing material validation before tooling commitment.
📋 Production Specifications
| Parameter | TR90 | Carbon Fiber | Titanium |
|---|---|---|---|
| MOQ | 300–500 pcs | 200–500 pcs | 100–300 pcs |
| Sample lead time | 7–10 days | 10–15 days | 10–15 days |
| Mass production lead time | 25–35 days | 35–45 days | 35–45 days |
| Certifications | CE / FDA / ISO 9001 | CE / FDA / ISO 9001 | CE / FDA / ISO 9001 |
| Compliance standards | EN ISO 12312-1, ANSI Z87.1 | EN ISO 12312-1, ANSI Z87.1 | EN ISO 12312-1, ANSI Z87.1 |
| Logo application | Silk-screen / laser / metal inlay | Laser engraving | Laser / PVD |
| Color customization | Full Pantone | Black tones only | PVD (wide range) |
| Lens compatibility | PC / TAC / CR-39 / Nylon | PC / Nylon (rigid-frame) | Drilled PC / Nylon |
📩 Start Your Sports Eyewear Project
[ Request Free Material Samples ] [ Discuss Your OEM Project ]
Karuson | Dongguan & Guangzhou | MOQ from 100 units | CE / FDA / ISO 9001 | EN ISO 12312-1
❓ FAQ: Sports Sunglasses Frame Materials for OEM
Q1: Can I use TR90 frames with high-end lenses to justify a $60–$100 retail price?
Yes. A TR90 frame (production cost: $4–$8/unit at 500 pcs) paired with TAC polarized lenses with hydrophobic and anti-reflective coatings supports a $60–$100 retail price with healthy margin. The lens specification — not the frame material — is what drives optical performance claims in this price band. The TR90 frame keeps production cost in check while the lens delivers the product story.
Q2: Is carbon fiber actually more durable than titanium for sport eyewear?
It depends on the failure mode. Carbon fiber's tensile strength-to-weight ratio (~600–700 MPa at 1.6 g/cm³) exceeds titanium's (~500 MPa at 4.5 g/cm³). However, CFRP is brittle under torsional or lateral impact — it fractures rather than deforms. Beta-titanium (Young's modulus ~80 GPa) absorbs and recovers from deformation through elastic flex. For contact sports, rough outdoor use, or any category involving lateral impact risk, titanium or TR90 outperforms carbon fiber in real-world durability scenarios.
Q3: What is the minimum order quantity for a custom sports sunglass line?
MOQ varies by material: TR90 injection-molded frames from 300 units, carbon fiber and titanium from 200–300 units depending on frame complexity. Pilot runs at lower quantities (100–150 units) are available for selected stock-mold styles across all three materials. Rapid prototyping (7–15 days) is available before mass production commitment.
Q4: How do I choose between TR90 and titanium for a lifestyle sport brand?
The deciding variable is target consumer price tolerance and expected product lifespan. TR90 is economically optimal for consumers shopping at $20–$80 with a 1–3 year product expectation. Titanium justifies $120+ for consumers who evaluate eyewear as a long-term purchase — specifically, those in the 35–55 demographic who research hypoallergenicity (titanium contains no nickel, unlike many metal alloys) and expect a frame to outlast several lens replacements.
Q5: Do carbon fiber frames comply with EN ISO 12312-1 for the European market?
Compliance under EN ISO 12312-1 is lens-dependent, not frame-material-dependent — the standard covers luminous transmittance, UV protection (UV400 requirement: ≤1% transmittance below 380nm), and optical power. Carbon fiber frames do not affect optical compliance. The frame material is assessed separately under mechanical and flammability requirements. Karuson supplies EN ISO 12312-1 test reports for all lens types across all frame materials.
Q6: Can titanium frames be produced with colored finishes for brand differentiation?
Yes, via PVD (physical vapor deposition) coating. PVD applies metal compound layers (TiN, TiCN, TiAlN) at 200–500°C in a vacuum chamber, producing finishes in gold, rose gold, gunmetal, black, and custom tones. PVD coating hardness is 1,500–2,500 HV (Vickers), compared to 200–300 HV for conventional electroplating, giving significantly higher scratch and corrosion resistance. Color accuracy is reproducible to ΔE < 1.5 across production batches.
Polarized Sunglasses with Anti-Seawater Coating: Technical OEM Specification Guide for Marine & Watersports Eyewear
CR-39 vs Polycarbonate: A Technical Lens Selection Guide for OEM Eyewear Brands
TR90 vs Carbon Fiber vs Titanium Sports Sunglasses | OEM Frame Guide
Why Sourcing from a China Eyewear Factory is the Strategic Choice for Global Brands
OEM vs. ODM: Which Partnership Model is Best for Your Eyewear Business?
2026 Eyewear Trend Forecast: Colors, Shapes, and Textures to Watch
You May Also Like
Premium Optical Lenses | High-Clarity Custom OEM Lenses for Brands
As a premier high-definition glasses lenses manufacturer, Karuson crafts high-quality Polyamide (PA) Nylon Tinted Lenses that represent the perfect synergy of ultra-lightweight performance and high-toughness durability. By integrating professional-grade tinting technology with advanced material science, we offer a lens solution that delivers exceptional optical clarity alongside vibrant, fashionable color expression. Designed for both daily commutes and trendy lifestyle matching, these lenses provide a comfortable and aesthetic visual experience, serving as a high-performance fashion accessory for the modern, style-conscious consumer.
CR-39 & Polycarbonate Lenses | HD Optical OEM Wholesale Supply
Experience the precision of a professional custom glasses lenses manufacturer. Karuson polarized lenses are engineered with a 99.9% high-polarization effect to provide unparalleled visual definition and glare reduction. By strategically absorbing reflected light through a high-stability PVA layer, our lenses are optimized for high-intensity outdoor environments, including maritime sailing, hunting, and alpine skiing. Furthermore, our specialized treatment ensures the lenses remain durable and distortion-free even in environments with high heat and humidity.
Photochromic Lenses | Adaptive Indoor & Outdoor OEM Custom Lenses
As premier eyeglass lenses manufacturers, Karuson crafts high-performance PC polarized coated lenses that seamlessly integrate lightweight, impact-resistant polycarbonate with advanced optical film technology. These lenses are engineered to achieve superior glare reduction and enhanced visual definition while offering a spectrum of stylish, customizable tints. Optimized for professional driving, outdoor sports, and urban lifestyles, our manufacturing process ensures that harmful reflections from water, roads, and snow are effectively filtered out. The result is a durable, fashion-forward visual solution that perfectly balances essential eye protection with high-end aesthetic appeal—making them the ideal choice for brands seeking to merge practicality with a modern fashion statement.
Premium Lens Coatings | AR, Anti-Scratch & Custom Finishes OEM
As a leading lenses manufacturer, Karuson sets a new industry standard with our flagship-grade Polyamide (PA) Nylon polarized lenses. By seamlessly merging ultra-lightweight, high-toughness materials with precision polarizing technology, we deliver a high-definition visual solution that excels in durability and comfort. Optimized for high-intensity outdoor activities, professional driving, and competitive sports scenarios, these lenses redefine the performance benchmark for polarized optics, providing global brands with a truly elite-level product.
Get in touch with us
If you have any comments or good suggestions, please leave us a message; later our professional staff will contact you as soon as possible.
NEW DIMENSIONS IN EYEWEAR
Contact KARUSON
Email:
WhatsApp/Phone:
Address:
331 Section B, WanJia Creative Park , No. 1 BUXIA Road ,Tianhe District, Guangzhou City, Guangdong Province, China.
© 2026 KARUSON. All Rights Reserved.
Facebook
Instagram
YouTube
TikTok
Linkedin