MITSUBISHI MATERIALSCopper & Copper Alloy Business

MITSUBISHI MATERIALSCopper & Copper Alloy Business

Japanese

Products information

Brass, Red brass

Standard No.
JIS
C2100(RB1),C2600(B1),C2680(B2A),C2801(B3),C3604(free-cutting brass),C3771(Forging brass)
CDA
C21000(RB1),C26000(B1),C26800(B2A),C28000(B3),C37700(Forging brass)

Brass is an alloy of copper and zinc. It has relatively high conductivity compared with other alloys, and has strength compared with pure copper, and the price thereof is relatively inexpensive. For this reason, Brass has been widely used in various industries.
Note : The following data are only for infomtion, not specifications.

Positioning of Alloy

The brass and gunmetal, which are alloys of copper and zinc are provided in the shapes of a plate, a strip, and a bar by melting and casting electrolytic copper and zinc in the company.

Main features

The gunmetal is also called red brass, and shows pale pink color. It is an alloy of copper and zinc, but the color changes according to the content of zinc. In terms of its beautiful color tone, it is used not only for building but also for cases of accessories and cosmetics, and the like. Examples of the gunmetal include an alloy having the content of copper in a range of 78.5% to 96.0%, and consisting of remaining zinc (C2100 to C2400).

The brass (gold) is an alloy of copper and zinc, and especially an alloy with the zinc of 20% or more. It is excellent in workability such as extensibility, flexibility, drawability, and plating property, and it has been widely used as an industrial material.

Main applications

Radiator, snap button, camera parts, thermos bottle, wiring bracket, switch terminal, metal goods,
clock dial for construction, jewelry, cosmetic cases, furniture drawing, zipper, cartridge cas

Chemical composition

The chemical components of Red brass (C2100) are as follows.

(Weight %)

Cu Zn
95 5
* Including inevitable impurities and trace additive elements

The chemical components of Brass (C2600) are as follows.

(Weight %)

Cu Zn
70 30
* Including inevitable impurities and trace additive elements

Physical properties

The physical properties red brass (C2100) are as follows. NOTE: The physical properties are average.

Property Representative Value
Specific Gravity (293K) 8.86
Coefficient of Thermal Expansion
(×10-6/K:293~573K)
18.1
Thermal Conductivity
(W/(m・K):293K)
234
Volume Resistivity
(μΩm:293K)
0.0308
Electrical Conductivity
(%IACS:293K)
56
Modulus of Elasticity
(kN/mm:293K)
118

The physical properties of brass (C2600) are as follows. NOTE: The physical properties are average.

Property Representative Value
Specific Gravity (293K) 8.53
Coefficient of Thermal Expansion
(×10-6/K:293~573K)
19.9
Thermal Conductivity
(W/(m・K):293K)
121
Volume Resistivity
(μΩm:293K)
0.0616
Electrical Conductivity
(%IACS:293K)
28
Modulus of Elasticity
(kN/mm:293K)
110

Mechanical properties (Sampling direction : L.D)

The mechanical properties of Brass (C2600) and Red brass (C2100) are as follows.

Red brass (C2100)
  Temper
0 1/4H 1/2H H
Tensile Strength
(N/mm2)
205Min. 225~305 265~345 305Min.
Elongation
(%)
33 23 18  
Vickers Hardness
(HV)
(60Max.) (60~90) (80~110) (100Min.)
* reference value.
Brass (C2600)
  Temper
0 1/4H 1/2H 3/4H H EH SH ESH
Tensile Strength
(N/mm2)
275Min. 325~410 355~440 375~470 410~540 520~620 570~655 620Min.
Elongation
(%)
40 35 28 20        
Vickers Hardness
(HV)
(60~80) (80~105) (100~130) (120~145) (135~160) (155~175) (170~190) (180Min.)
* reference value.

Inquiry

Strip & Plate

Rolled product Sales Dept.

TEL:+81-3-5252-4981

Bar & Rod

Group Ⅲ, Extruded Product & Wire Rod Sales Dept.

TEL:+81-72-233-9001

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