Products
Shape Round Bar
Surface Treatment Polished
Material Type Pure Copper, Brass, White Copper, Bronze
Application Automotive Components, Industrial Machinery…
Common Grades T1, T2, T3, Tu1, Tu2, H65, H68, Hpb59-1, B19, B25
Categories: Copper Alloy Series
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Pure copper
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Common grades
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T1, T2, T3, TU1, TU2
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Characteristics
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Conductive
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Common uses
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Electrical switches, motor coils, electronic components, air conditioning piping, soft welding gun heads
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Brass
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Common grades
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H59, H62, H65, H68, HPb59-1 (easy-to-machine brass)
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Characteristics
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High strength, wear-resistant, resistant to water vapor corrosion
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Common uses
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Architectural hardware, heat exchanger tubes, pumps, power cylinders and bushings, military supplies
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White copper
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Common grades
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B19, B25, BFe10-1-1, BZn15-20, BA13-3
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Characteristics
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Stable physical properties at room temperature
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Common uses
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Medical equipment, precision instruments, thermocouples, clock parts, eyeglass frames
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Bronze
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Common grades
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QCr 0.5, QCr 0.6-0.4-0.05, QSn 4-3, QSn 6.5-0.4, QSn 7-0.2, QAl 5, QAl 9-2, QAl 10-4-4, QSi 3-1, QSi 3.5-3-1.5, QMn 1.5, QMn 5, QCd 1
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Characteristics
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Different formulations based on hardness, strength, elasticity, high-temperature conductivity, etc.
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Common uses
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Lamp spring clips, switch spring clips, resistance welding electrode materials (rolling welders, butt welders, contact welders, riveting welders), chromium-zirconium copper, beryllium-cobalt copper
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CuNi2 NC005
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1
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2
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4
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6
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8
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3
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10
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14
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CN3W
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CN5W
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CN7W
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CN10W
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CN12W
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QMn3
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CN15W
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CN20W
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TYPE
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CuNi1
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CuNi2CuNi4
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CuNi6
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CuNi8
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CuMn3
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CuNi10
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CuNi14
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NC003
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NC005NC007
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NC010
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NC012
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MC012
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NC015
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NC020
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Composition(%)
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Cu
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Rest
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Rest
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Rest
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Rest
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Rest
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Rest
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Rest
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Rest
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Mn
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—
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—
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—
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—
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—
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3
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—
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0.3
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Ni
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1
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2
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4
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6
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8
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10
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14.2
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Max.continuous operating temperatureC
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200
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200
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200
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220
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250
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200
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250
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300
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μΩ ·m(20℃)Resistivity
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0.03±10%
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0.05±10%
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0.07±10%
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0.10±10%
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0.12±10%
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0.12±10%
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0.15±10%
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0.20±5%
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×105/℃
(20-600℃) Resistance-temperaturecoefficient |
<100
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<120
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<50
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<60
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<57
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<38
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<50
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<38
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Thermovoltage tocopperat20℃inμV/K
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-8
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-12
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-12
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-18
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-22
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–
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-25
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-28
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Mean coefficient oflinearthermal expansion,in10/K,at a temperaturebetween20 ℃and400℃
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17.5
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17.5
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17.5
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17.5
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17.5
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18
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17.5
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17.5
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Thermal conductance at20℃W/mK
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145
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130
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130
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92
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75
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84
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59
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48
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Specific heat capacityat20℃J/gK
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0.38
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0.38
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0.38
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0.38
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0.38
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0.39
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0.38
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0.38
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Densityat20℃(g/cm³)
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8.9
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8.9
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8.9
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8.9
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8.9
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8.9
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8.9
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8.9
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Melting temperaturein℃
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1085
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1090
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1090
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1095
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1097
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1050
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1100
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1115
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Min.tensile strengthin N/mm²
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210
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220
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220
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250
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270
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290
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290
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310
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% Elongation
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25
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25
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25
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25
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25
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25
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25
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25
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CuNi2 NC005
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19
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23
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30
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34
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44
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CN25W
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CN30W
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CN35W
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CN40W
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CN50W
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TYPE
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CuNi19
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CuNi23
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CuNi30
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CuNi34
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CuNi44
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NC025
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NC030
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NC035
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NC040
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NC050
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Composition(%)
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Cu
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Rest
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Rest
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Rest
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Rest
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Rest
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Mn
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0.5
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0.5
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1
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1
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1
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Ni
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19
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23
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30
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34
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44
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Max.continuous operating temperatureC
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300
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300
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350
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350
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400
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μΩ ·m(20℃)Resistivity
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0.25±5%
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0.30±5%
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0.35±5%
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0.40±5%
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0.49±5%
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×105/℃
(20-600℃) Resistance-temperaturecoefficient |
<25
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<16
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<10
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<-0
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<-6
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Thermovoltage tocopperat20℃inμV/K
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-32
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-34
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-37
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-39
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-43
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Mean coefficient oflinearthermal expansion,in10/K,at a temperaturebetween20 ℃and400℃
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17.5
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17.5
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17
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16
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15
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Thermal conductance at20℃W/mK
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38
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33
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27
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25
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23
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Specific heat capacityat20℃J/gK
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0.38
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0.38
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0.39
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0.4
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0.41
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Densityat20℃(g/cm³)
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8.9
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8.9
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8.9
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8.9
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8.9
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Melting temperaturein℃
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1135
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1150
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1170
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1180
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1280
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Min.tensile strengthin N/mm²
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340
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350
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400
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400
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420
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% Elongation
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25
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25
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25
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25
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25
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BMn3-12
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Alloy Name
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BMn3-12 (Manganese brass / Manganese bronze)
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Common Grades (Nickel-based alloys reference)
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Hastelloy C276, Hastelloy C22, Hastelloy C-2000, Hastelloy C-4, Hastelloy C, Hastelloy B, Hastelloy B-2, Hastelloy B-3, Hastelloy X, Hastelloy G-30, Hastelloy G-35
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Chemical Composition (GB/T 5231-2022)
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Cu ≈ 87%; Mn 11.5–13.5%; Fe 0.2–0.5%; C ≤ 0.05%; Si 0.1–0.3%; P ≤ 0.005%; S ≤ 0.02%; Ni 2–3.5% (Ni+Co total); Pb ≤ 0.02%; Al ≤ 0.2%; Mg ≤ 0.03%
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Physical Properties
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Density: ~8.4 g/cm³; Melting range: 961–1011.2 °C; Thermal expansion coefficient: 16×10-6 K-1(at 100 °C); Thermal conductivity: 21.8 W/(m·K); Specific heat capacity: 0.408 J/(kg·K); Electrical resistivity: 0.435×10-6 Ω·m; Temperature coefficient of resistivity: 0.00003 °C-1
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Mechanical Properties
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High hardness and wear resistance with good toughness and corrosion resistance; After quenching & aging: Tensile strength ≥ 400 MPa; Yield strength ≥ 300 MPa
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Application Fields
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Heavy industry, construction machinery, transportation vehicles, energy equipment, aerospace, automotive; Suitable for heavy-load parts such as bearings, bushings, gears, gearboxes, hydraulic system components
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Processing & Manufacturing
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Processing methods: casting, forging, extrusion, cutting; Heat treatment: quenching and aging to improve mechanical properties; Good weldability with various welding techniques
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