Black Titanium, as defined by Titanium-YJGF.com, refers to cold-rolled titanium coils that, after rolling, undergo a heat-treatment in air (air oxidation), resulting in a dark, matte-black oxide surface-a finish we uniquely term “black titanium” (air titanium). This is distinct from decorative or jewelry-grade black titanium; our black titanium is strictly an industrial-grade surface treatment based on oxidation, not coatings or alloy coloration.
Manufacturing Standards & Specifications
Material Grades & Dimensions
- Material Grades: Gr1 (TA1) and Gr2 (TA2)—commercially pure titanium grades known for excellent corrosion resistance and formability
- Thickness Range: Ultra-thin to medium sheet, 0.05–1.5 mm.
- Width Range: 10–1250 mm, enabling flexibility across diverse applications.
Product Types
- Cold-rolled Titanium (2BB finish)
- The surface remains matte, with no additional treatment post rolling-ideal for standard industrial uses.
- Black Titanium (Air Titanium)
- After cold rolling, the coil is heat-treated in air, driving controlled oxidation and forming a dark, matte-black oxide layer on the surface—this is our signature “black titanium”.
Product Codes & Process Types
We categorize black titanium and cold-rolled products by their material behavior and production process:
- Gr1 (TA1): Standard cold-rolled titanium for general industrial use.
- Gr1 (TA1)-DD: Enhanced deep drawability; produced via multiple rolling passes, offering superior formability for complex shaping-albeit at higher production cost.
- Gr1 (TA1)-TM: Suitable for tube manufacturing and insulated flask applications, produced via a single rolling pass to optimize cost and uniformity.
- Gr1 (TA1)-STP: Meets standard stamping requirements, produced via single-pass rolling.
- Gr1 (TA1)-BD: Black Titanium with good stampability, produced over multiple rolling passes for enhanced surface and mechanical consistency.
- Gr1 (TA1)-BS: Black Titanium for standard stamping, produced via single-pass rolling for cost-efficiency.
Applications & Industry Uses
Our titanium sheets—both standard and black titanium—serve across numerous sectors:
- Insulated flasks, vacuum cups, and cookware: black titanium offers both aesthetic appeal and corrosion resistance.
- Tube forming and deep drawing products: TA1 grades are well-suited due to their ductility.
- Energy, petrochemical, and 3C (consumer electronics) sectors: favorable combination of light weight, strength, and durability
Technical Insight: What Makes Black Titanium “Black”?
Industrial black titanium is created by controlled air oxidation, forming a titanium oxide layer—typically TiO₂ (rutile phase)—which appears dark due to its light-absorbing, porous structure. In air at high temperatures (typically above 600 °C), titanium readily oxidizes, forming this oxide layer
Furthermore, research shows that anodic oxidation followed by heat treatment produces a sponge-like nanoporous rutile TiO₂ structure, which strongly absorbs light, resulting in a black appearance. Though our process utilizes heat-based air oxidation rather than vacuum anodization, the principle is related: a controlled oxide film creates the desired black finish.
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