MITSUBISHI MATERIALSCopper & Copper Alloy Business

MITSUBISHI MATERIALSCopper & Copper Alloy Business

Japanese

Products information

UH Serieswear-resistant copper alloy

It is a special high-strength brass bar with improved strength and wear resistance by solid solution strengthening and precipitation strengthening of Mn-Si intermetallic compounds.
UH brass bars

Positioning of Alloy

UH11

Has excellent properties of wear resistance and machinability.
Possible to cold work.

UH12

Improved strength and wear resistance compared to UH11 by adding Al.

UH13

Has highest strength and wear resistance in the UH series.

Main features

UH 11 is excellent in the wear resistance and the machinability, and can be also used in cold working. UH 12 is a material has higher strength and higher wear resistance than those of UH 11 by adding Al. UH 13 is a material having the highest strength and wear resistance in the UH series.

Main applications

It is suitably used for sliding parts such as bearings and gears such as a cylinder block, a shoe, a liner, a thrust metal, a screw nut, a hub wheel, a bush, and pinion gear.

Chemical composition

It shows chemical components of UH series. (Representative value)

Representative composition of UH series (Weight %)
  Cu Al Zn Pb Mn Si
UH11 59.0 - Rem. 1.0 2.5 0.9
UH12 62.0 1.5 Rem. 0.8 2.5 0.9
UH13 62.0 3.0 Rem. 0.3 3.0 1.0
* Including inevitable impurities and trace additive elements

Physical properties

It shows the physical properties of the UH series.

Physical properties of UH series
Property Representative Value
UH11 UH12 UH13
Specific Gravity (293K) 8.3 8.2 7.9
Coefficient of Thermal Expansion
(×10-6/K:293~573K)
20 20 20
Thermal Conductivity
(W/(m・K):293K)
101 101 101
Electrical Conductivity
(%IACS:293K)
18 20 23

Mechanical properties (Actual example: LD direction)

It shows the mechanical properties of UH series.

Mechanical properties of UH series
Property Representative Value
UH11 UH12 UH13
Tensile Strength
(N/mm2)
550 650 800
0.2% Yield Strength
(N/mm2)
400 450 500
Elongation
(%)
35 25 10
HV 150 180 230
HRB 84 88 98

Wear resistance

When referring to the wear test results in the Amsler type abrasion test (under lubrication), the reduced wear amount of UH 12 · UH 13 is equal to or less than 1/2 of C5191, and it is possible to confirm the excellent wear resistance.

Inquiry

Group Ⅲ, Extruded Product & Wire Rod Sales Dept.

TEL:+81-72-233-9001

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