More Website Templates @ TemplateMonster.com - August 06, 2011!

Copper and Copper Alloys

Free Cutting Brass  
Product Name ASTM
Alloy No.		 JIS
Alloy No.		 Chemical Composition (%) Features and Uses
Cu Pb Fe Sn Zn
Free cutting Brass C36000 - 60.0-63.0 2.5-3.7 ≦0.35
 Cu+Pb+Fe+Zn≦0.5 Excellent Machinability and C3601, C3602 Good Extensibility too.
Uses: Computers, Electronics, Clocks, Pens, Lighting, Rivets, Nuts, Gears, Valves, Camera Parts, Hardware Parts.
  C3601 59.0-63.0 1.8-3.7 <0.3 Fe + Sn<0.5 Rem
  C3602 59.0-63.0 1.8-3.7 <0.5 Fe + Sn<1.0 Rem
  C3603 57.0-61.0 1.8-3.7 <0.35 Fe + Sn<0.6 Rem
  C3604 57.0-61.0 1.8-3.7 <0.5 Fe + Sn<1.0 Rem
Forging Brass   C3771 57.0-61.0 1.0-2.5 Fe + Sn<1.0 Rem Excellent hot forging.
Uses: precision forging, machine parts.
Excellent hot forging and good machinability.
Uses: Valves, Watches and Machine Parts.

＊Cadmium content guaranteed below 75ppm, material can special order C3603Cd75

Copper  
JIS Mark Chemical Composition (%) Features and Uses
Cu Pb Fe Sn Zn
C1100 ≧99.90 - - - - Has excellent electrical conductivity, thermal conductivity, ductility. Good corrosion resistance and weather resistance. For electrical components and industrial chemicals.
Copper Beryllium Alloy  
Alloy No. Chemical Composition (%) Features and Uses
Be Co Ni Co+Ni Co+Ni+Fe Pb Cu Cu+Be+Ni+Co+Fe
C17300 1.8-2.0 - - ≧0.2 ≦0.6 - Rem 99.5 min High corrosion resistance, very high ductility before heat treatment. After heat treatment has excellent mechanical strength. Fatigue resistance and high conductivity. Aircraft parts, gears, bearings, electronic parts. Our Company Uses Fujii raw materials.
Brass  
JIS
Alloy No.		 Chemical Composition (%) Features and Uses
Cu Pb Fe Sn Zn
C2700 63.0-67.0 ≦0.05 ≦0.05 - - Cold forging properties, transformability, good ductility. Mechanical parts, electrical parts, tacks, screws, springs, metal meshes, etc.
Phosphor Bronze  
JIS Mark Chemical Composition (%) Remark Features and Uses
Cu Pb Fe Sn Zn P
C5191 REM 0.02 max 0.10 max
 5.5-7.0
 0.2 max
 0.03-0.35
 Cu+Sn+P≧99.5 Good fatigue resistance, corrosion resistance and wear resistance. Gears, cams, screws, connectors, coil springs, metal meshes.
C5441 REM 3.5-4.5 - 3.0-4.5
 1.5-4.5
 0.01-0.50
 Cu+Sn+Pb+P≧99.5
High Strength Brass  
JIS Mark Chemical Composition (%) Features and Uses
Cu Pb Fe Mn Al Zn
C6782 56.0-60.5 ≦0.5
 0.1-1.0 0.5-2.5
 0.2-2.0 REM High-strength, hot forging, good corrosion resistance. Marine propeller shafts, pump spindles, etc.

Environmental Brass

Addresses raising environmental requirements, worsening usage conditions, water pollution, etc. Environmentally friendly materials that are harmless to humans and the environment.

    Applications
  • Water-related accessories and valves
  • Construction related pipe fittings
  • Automotive related precision mechanical parts
  • Electronic parts
  • Alternative cutting and casting stainless steels
Various international standards restricting the contents of lead and cadmium
Name Pb (%) Cd (ppm) Remark
Lead-Free Brass and Low Lead Brass
 0.01 5 Unleaded without cadmium
0.09 5 Pb: CDA requirements
0.1 5 Pb: RoSH requirements
0.25 10 Pb: AB1953 requirements
Contains a small amount of brass
 1 10 Reduce the outflow of lead
1.5 30 Cables, customer requirements
Lead Brass Corrosion-Resistant Brass
Forged Brass
Cutting Brass
Easy Cutting Brass		 2 60 Excellent product certification
2 60 General processing
3 60 General processing
4 100 Pb: RoHS special requirements, Cd: RoHS

＊Ingredients% represents the maximum value

Legislation regarding lead-free drinking water equipment

In California, Bill AB1953 has been recognized (2006.9.29). Since January 2010, the upper limit for lead content in drinking water equipment has been reduced to 0.25% (weighted average). The same bill has extended from New York to other states.
* The surface treatment device for implementing lead exudation measures is actually unusable.

NSF/ANSI 61 (Drinking water system components – Health effects) Exudation amount of lead has been revised. Since July 2012, the amount of lead exudation in drinking water equipment has been reduced from 15ppb → 5ppb, virtually no Pb.
* It can be foreseen that the global lead exudation standards will be strengthened.

Europe: Expected to strengthen regulations regarding lead-free drinking water equipment starting in 2013.

What is RoHS certification?

RoHS is the abbreviation for “the Restriction of the use of certain Hazardous substances in electrical and electronic equipment.” The standard will be formally implemented beginning July 1, 2006, and will mainly be for regulating the materials used in electrical and electronic products as well as engineering standards, thereby making such products more conducive to human health and the environment. The purpose of the standard is to eliminate six substances in electrical and electronic products, including lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium, polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs).

RoHS Testing Principles

Metal material must be tested for four kinds of harmful metals, such as (Cadmium (Cd)/Lead (Pb)/Mercury (Hg)/Hexavalent chromium (Cr6+)).
For plastic material, in addition to checking the four harmful heavy metal elements, polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs) must also be tested for.
At the same time, the packaging material made from different materials must also be separately tested for heavy metals (94/62/EEC).

Following is the upper limit concentration level for the six hazardous substances set in RoHS: Exclusion Conditions:
Cadmium (Cd) less than 100ppm Lead in the steel alloy is less than 3500ppm
Lead (Pb)、Mercury (Hg)、Hexavalent chromium (Cr6+) less than 1000ppm Lead in the aluminum alloy is less than 4000ppm
Polybrominated biphenyls (PBB)、Polybrominated diphenyl ethers (PBDE) Lead in the copper alloy is less than 40000ppm
Cdmium-less & Lead-less Brass Rod  
Alloy No. Great Sunshine No. Chemical Composition (%) Features and Uses
Cu Pb Cd Bi Sn Fe+Sn+
Ni+...		 Zn P Si Fe
C6801 GS5A 57-64
 <0.01
 <0.0075
 0.5-4.0
 0.1-2.5
 <1.0
 REM - - <0.50
 Better cutting conditions, have a good cutting surface, pumping stretching rod, line.
C6803
C6802 6802 57-64
 0.01-0.10
 <0.0075
 0.5-4.0
 0.1-3.0
 <1.0
 REM <0.2
 - <0.70
C6804
Naval Brass Lead Free  
Alloy No. Great Sunshine No. Chemical Composition (%) Features and Uses
Cu Pb Cd Hg Bi Sn Fe+Sn+
Ni+...		 Zn P Si Fe
C46400 46400 58-62
 <0.2
 <0.01
 <0.003
 - <0.5 <1.0
 REM - - -
 Forging materials,fitness cutting, bar.
Low Lead Brass Alloys  
Standards Chemical Composition (%)
ISO EN UNS Cu Zn Pb Other Elements
CuZn38As CW511L - 62.5 REM ≦0.2
 As=0.1
CuZn42 CW510L - 58 REM ≦0.2
 -
CuZn40 CW509L C27450 60.5 REM ≦0.2
 -
CuZn21Si3P CW724R C69300 73-77 REM ≦0.09
 P=0.04-0.15
Si=2.7-3.4
Sn=0.2 max
Ni=0.10 max
Mn=0.10 max
Fe=0.10 max
Processing Properties Corrosion Properties Features and Uses
Easy machinability (%) Cold ductility Hot ductility Mechanical polishing Electrochemical polishing Resistance to dezincification Resistance to stress
corrosion cracking
50 Good Medium Excellent Good YES Special treatment can be realized For the water ware industry
70 Poor Excellent Excellent Good NO
50 Medium Good Excellent Good NO
80 Medium Excellent Good Good YES YES

top