Pure titanium chopsticks called "Katsuki" are made using techniques from Japanese glassmaking. Titanium was chosen for its safety, limited impact on the human body, and anti-corrosive properties from an oxide film. The chopsticks are lightweight yet strong from forged high-purity titanium. They have a mirror polish finish and optional colorful anodized patterns. Their non-reactive properties make them durable, non-rusting, and safe for food use.
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Pure titanium chopsticks "katsuki"
1.
2. Pure Titanium Chopsticks “Katsuki”
are made using techniques used by
artisans in Japan for making glasses.
From the reasoning that “Chopsticks are
something you put in your mouth, so they have to
be safe,” we considered titanium to have ideal
properties for an eating utensil because it has a
limited impact on the human body, and have been
making chopsticks since 1999.
Pure Titanium Chopsticks
KATSUKI
3. Low risk of metal allergies
Titanium is a safe material with a low risk of
metal allergies used in medical equipment,
glasses, and accessories that gives you peace of
mind.
Titanium binds with oxygen, immediately
forming an oxide film (TiO2) on the surface.
This oxide film has stable anti-corrosive
properties, and since oxygen cannot pass
through it, the oxidation of titanium doesn’t
proceed any further.
Because of this, the metallic ions inside do not
dissolve, and titanium is a metal that doesn’t
usually provoke allergic reactions.
Also, since titanium is prevented from ionizing
by the oxide film on the surface, there is no
metallic smell.
Light and strong
Since pure titanium has only about 56% of the density of stainless steel, the
chopsticks are lightweight. At the same time, they are strong, with a tensile
strength equivalent to iron.
Since the oxide film on the surface doesn’t let oxygen through, titanium
doesn’t rust, so the chopsticks can be used for a long time.
Washable in a dishwasher
These chopsticks have no coating, plating, or
coloration on the surface, so there is no need to
worry about pigments peeling off when drying
or washing in a dishwasher.
Also, since they’re made of metal, they can be
disinfected by boiling, making it easy to use
them cleanly.
Low thermal conductivity
The thermal conductivity of pure titanium is low, about one-quarter that of
iron, or about 23 times less than that of copper, and since the density is also
low, titanium chopsticks don’t draw heat out of your hand, so they don’t tend
to feel cold.
Having a low thermal conductivity also means that even when the tips of the
chopsticks touch something hot, this only makes the tips heat up. The parts
of the chopsticks that you hold don’t get hot.
Comparing pure titanium chopsticks with other metals
Metal name Density
（ｇ/cm³）
Tensile strength
（N/nm²）
Thermal
conductivity
（W/m℃）
Specific heat
（J/kg･K）
Pure titanium 4.5 340－510 17 520
Stainless steel SUS304 8.0 over 520 16 500
Iron
SS400
7.9 450 62 460
Copper 8.9 over 195 381 390
（Values are for reference purposes only and do not represent guarantees）
Properties
of
Pure
Titanium
Chopsticks
4. Perfect luster
Polished using mirror polishing technology
developed for glasses manufacturing, these
chopsticks have a perfect luster never seen
before in titanium products.
Beautiful titanium coloring
Titanium coloring from anodizing is created by an interference effect
between light reflected off of the oxide film produced by anodization and
light reflected off of the titanium surface. Certain wavelengths are
strengthened by the interference effect, producing colors. This is the same
phenomenon that makes soap bubbles or oil floating in water appear to have
a rainbow color.
The smoother the titanium surface, the more beautiful and clear the metallic
color becomes.
The color tone also changes subtly depending on the brightness or type of
light used and the viewing angle.
Titanium coloring from anodization is a beautiful kind of color unique to
titanium that’s different from colors created by plating or coating.
Incident light
Reflected light from
the oxide film
Reflected light from
the titanium chopsticks
The interference from the reflected light
causes a specific color tone to appear
The color tone changes depending
on the thickness of the oxide film
Oxide film
Titanium chopsticks
Original
Production
Method
Forged to be stronger
Since the chopsticks are forged from high purity
(more than 99.5%) titanium, the strength is
increased, making them durable.
That means that they don’t break or bend under
normal use, so you can use them for a long time.
The slender shape is designed to make it so
they don’t feel heavy.
5. Since the tips of the
chopsticks are slender,
it’s easy to grasp food.
It doesn’t look unnatural to place
them next to other cutlery.
Chopsticks and Cutlery
6. ・KP10111 Plain luster ¥3,960
・KP10112 Plain matte ¥3,960
[size] length:about22.5㎝, weight:about30ｇ
Luster
The perfect luster is produced by
mirror polishing
Matte
A relaxed matte gray
from sandblasting
Plain
7. Ichimatsu
Shima
Rasen
Ichimatsu,Shima,Rasen
・KP10311 Ichimatsu
・KP10312 Shima
・KP10313 Rasen
[size] length:about22.5㎝, weight:about30ｇ
¥5,500
¥5,500
¥5,500
Simple sandblasted design
Shochiku
The pine needles and
bamboo leaves are
refreshingly cool
Ume
The plum blossoms and
flower buds are cute
Shidarezakura
The cherry branches and
flower petals blowing
in the wind are beautiful
・KP10211 Shochiku
・KP10212 Ume
・KP10213 Shidarezakura
[size] length:about22.5㎝, weight:about30ｇ
¥5,500
¥5,500
¥5,500
Shochiku,Ume, Shidarezakura
Delicate laser patterns
8. Green
Blue
Designs with silver rings on
a metallic color background
Blue
Purple
Yellow
Green
Anodization Rin
・KP10411 Anodization Rin Metallic color Blue
・KP10412 Anodization Rin Metallic color Purple
・KP10413 Anodization Rin Metallic color Yellow
・KP10414 Anodization Rin Metallic color Green
[size] length:about22.5㎝, weight:about30ｇ
¥8,250
¥8,250
¥8,250
¥8,250
・KP10511 Anodization Sai Green
・KP10512 Anodization Sai Blue
[size] length:about22.5㎝, weight:about30ｇ
¥7,700
¥7,700
Anodization Sai
Beautiful rainbow coloring
