Free Cutting Brass

Featuring good machinability, for example, free cutting bronze such as JIS C3604 and ASTM C36000 are common work-piece for Lathe (numerical or CNC) in mass production. Not only is it eco-friendly, low content in cadmium, chromium, mercury but suitable for producing components of PC, electronic usage, Bathroom Accessories, watch & clock, fishing tackles, pens, illuminations, bolts, nuts, optical, medical, valves, camera and other hardware because of its excellence in machinability, cold-forging and ductility.

Product Applications

Suitable for producing components of PC, electronic usage, Bathroom Accessories, watch & clock, fishing tackles, pens, illuminations, bolts, nuts, optical, medical, valves, camera and other hardware.

High-Machinability / Free-Machining Alloys

Representative Grades: C3604, C3601, C3602, C3603 Key Fea

MORE
High-Machinability / Free-Machining Alloys

Representative Grades: C3604, C3601, C3602, C3603

Key Features:
▪ Serves as the industry benchmark for copper alloy machinability (100% rating).
▪ Delivers superior chip-breaking performance to prevent bird-nesting and tool entanglement.
▪ Significantly minimizes CNC tool wear to extend tool life.
▪ Effectively increases machining speeds and production throughput.

Applications:
▪ Electronic and computer components
▪ Watch and clock parts
▪ Fasteners (Screws & Nuts)
▪ Gears
▪ Camera and optical components
▪ Precision hardware requiring high-volume automatic screw machine processing

Close
High Electrical & Thermal Conductivity Alloys

Representative Grades: C1100 (Electrolytic Tough Pitch / ET

MORE
High Electrical & Thermal Conductivity Alloys

Representative Grades:
C1100 (Electrolytic Tough Pitch / ETP Copper)
C1020 (Oxygen-Free / OFC Copper)

Key Features:
▪ High-purity copper composition.
▪ Delivers exceptional electrical conductivity, thermal conductivity, and high ductility.
▪ C1020 (Oxygen-Free Copper) is completely immune to hydrogen embrittlement during high-temperature processing in reducing atmospheres.

Applications:
▪ Electronic pins, leads, and terminal connectors
▪ Electrical busbars
▪ Heat exchangers
▪ Vacuum technology and UHV equipment
▪ Chemical processing components

Close
Hot Forging Alloys

Representative Grades: C3771, C3712 Key Features: ▪ Exhi

MORE
Hot Forging Alloys

Representative Grades: C3771, C3712

Key Features:
▪ Exhibits outstanding hot forgeability with excellent thermal deformation properties.
▪ Provides good machinability tailored for post-forge secondary operations.
▪ Features exceptional metal flow under high temperatures, optimized for pressing into highly complex and intricate geometries.

Applications:
▪ Various industrial valves, cocks, and fluid-control components
▪ Plumbing hardware, commercial faucets, and sanitary fittings
▪ Precision die-forged mechanical parts

Close
High-Strength & Wear-Resistant Alloys

Representative Grades: C5441 (JIS) / C54400 (ASTM) Key Fe

MORE
High-Strength & Wear-Resistant Alloys

Representative Grades: C5441 (JIS) / C54400 (ASTM)

Key Features:
▪ Features high hardness and excellent structural stability.
▪ Delivers exceptional fatigue strength and wear resistance under continuous mechanical stress.
▪ Alloyed with free-machining elements (Pb) to ensure superior machinability and optimal chip control.

Applications:
▪ Precision gears, pinions, and worm gears
Cams
▪ Miniature bearings and bushings
▪ Electrical connectors, plugs, and terminals
▪ Sliding elements and friction-prone components

Close
Marine-Grade & Corrosion-Resistant Alloys

Representative Grades: ▪ C4641, C4622 (Naval Brass) ▪ C353

MORE
Marine-Grade & Corrosion-Resistant Alloys

Representative Grades:
▪ C4641, C4622 (Naval Brass)
▪ C3531 (Dezincification-Resistant / DZR Brass)

Key Features:
▪ Exhibits exceptional resistance to seawater corrosion and harsh marine environments.
▪ Provides high immunity to dezincification corrosion in aggressive water conditions.
▪ Demonstrates outstanding resistance to both fluid erosion-corrosion and pitting.
▪ Combines high mechanical strength with superior wear and abrasion resistance.
▪ Forms a self-healing, protective oxide film on the surface to prevent subsequent degradation.

Applications:
▪ Marine hardware, propeller shafts, and underwater structural components
▪ Tube sheets and plates for heat exchangers and condensers
▪ Plumbing fixtures, commercial faucets, and industrial water valves
▪ Pipe fittings, joints, and fluid connectors

Close

Steel data

Standard Code Spec No. Material No. Mark
JIS C3601
JIS C3602
JIS C3603
JIS C3604
JIS C6801
JIS C6802
(Pb)% (Cu)% (Al)% (Sn)% (Fe)% (Bi)% Remarks
1.8~3.7 59~63 ≦ 0.3 殘餘Zn(%)、max(Zn+Fe)=0.5%
1.8~3.7 59~63 ≦ 0.5 殘餘Zn(%)、max(Zn+Fe)=1.0%
1.8~3.7 57~61 ≦ 0.3 殘餘Zn(%)、max(Zn+Fe)=0.6%
1.8~3.7 57~61 ≦ 0.5 殘餘Zn(%)、max(Zn+Fe)=1.0%
≦ 0.01 57~64 ≦ 0.1 0.2~2.5 ≦ 0.5 0.5~4 殘餘Zn(%)
≦ 0.1 57~64 ≦ 0.1 0.2~2.5 ≦ 0.5 0.5~4 殘餘Zn(%)