🔪 Overview

The TwoSun TS513 is a modern titanium-frame folding knife designed by David Chen, blending aggressive styling with a premium mid-range materials package. The knife appears to focus heavily on smooth flipping action, slim carry profile, and high-end machining while staying in the enthusiast-budget category that TwoSun Knives is known for.

⚙️ Known / Reported Specifications

Because the TS513 is relatively obscure and exact factory specs are difficult to verify publicly, some details below are compiled from enthusiast listings and owner discussions.

Specifications:

Model: TwoSun TS513

Designer: David Chen

Knife Type: Folding flipper

Blade Steel: 14C28N stainless steel

Handle Material: Titanium / Carbon Fiber

Lock Type: Frame lock

Pivot: Ceramic Bearing system

Opening Method: Flipper tab

Carry Style: Pocket clip, tip-up

Intended Use: EDC / collector / fidget knife

🧱 Blade & Steel

The TS513 reportedly uses Sandvik 14C28N, a steel widely respected for:

* Excellent corrosion resistance

* Easy sharpening

* Fine edge stability

* Smooth cutting performance

14C28N is often favored in high-value EDC knives because it balances toughness and stainless performance very well compared to older D2-based TwoSun models. Community feedback on modern TwoSun heat treats for 14C28N has generally been positive.

🛠 Handle & Construction

The TS513 appears to feature:

* Titanium frame construction

* Precision-machined scales

* Bearing-driven action

* Modern angular styling

* Slim pocketable profile

Like many higher-end TwoSun designs, it is aimed more at enthusiasts than purely hard-use utility users.

🎯 Overall Character

The TS513 falls into the category of:

* Premium-feeling budget titanium flippers

* Collector-oriented EDC knives

* Smooth-action “fidget” folders

* Modern Chinese production knives

Compared to older chunky TwoSun models, the TS513 seems more refined and design-focused.

💬 Community Notes

Knife communities generally view modern TwoSun knives as offering:

* Strong machining quality

* Very good materials for the price

* Impressive value in titanium framelocks

* Occasionally inconsistent ergonomics depending on the model

TS513 is a David Chen design.

📏 Estimated Size Class

While verified dimensions are scarce, the TS513 appears to fit the:

* Medium-large EDC category

* Roughly 3.3–3.6 inch blade class

* Titanium framelock flipper format