Properties of bronze alloys

 

Strength properties of copper alloys

Strength properties in centrifugal and continuous casting are valid up to 50 mm material content.

    0,2 proof strength
N/mm2
Tensile strength
N/mm2
Elongation
A5%
Hardness HB
F = 10D2
  PROMET        
Gun metal 5 110 250 13 65
Gun metal 737 120 260 12 70
Gun metal 310 130 260 15 75
Tin bronze 10 160 280 10 80
Tin bronze 12 150 280 5 90
Leaded tin bronze 1010 110 220 8 70
Leaded tin bronze 715 90 200 7 65
Leaded tin bronze 420 80 170 6 50
Aluminiumbronze Ap 110 200 550 15 130
Aluminiumbronze NiAp 210 280 650 13 150
Aluminiumbronze NiAp 410 380 750 5 185
Brass Ms 264 70 180 12 50
Special brass EMs5750 200 500 18 120
Special brass EMs5760 260 620 14 150
Special brass EMs5775 480 750 5 190

 

Nominal composition of Promet-alloys in %

    Al Cu Fe Mn Ni Pb Sn Zn
  PROMET                
Gun metal 5   85       5 5 5
Gun metal 737   82       7 7 4
Gun metal 310   88         10 2
Tin bronze 10   90         10  
Tin bronze 12   88         12  
Leaded tin bronze 1010   80       10 10  
Leaded tin bronze 715   78       15 7  
Leaded tin bronze 420   75       20 5  
Aluminium bronze Ap110 10 88 2          
Aluminium bronze NiAp210 10 80 5   5      
Aluminium bronze NiAp410 11 77 6   6      
Brass Ms 264   65       2   33
Special brass EMs5750 1 61 1 2       35
Special brass EMs5760 2 60 1 3       34
Special brass EMs5775 5 63 3 4       25

Physical properties of Promet-alloys

  Density Coefficient of thermal expansion Specific heat capacity Thermal conductivity Resistivity Elastic modulus
  20-200°C 20°C 20°C 20°C 20°C
  PROMET kg/dm 10-6x1/K J/Kkg W/Km nΩm kN/mm2
Gun metal 5 8.9 18 375 70 110 95
Gun metal 737 8.9 19 375 45 110 90
Gun metal 310 8.9 18 375 50 160 100
Tin bronze 10 8.8 18 375 50 160 110
Tin bronze 12 8.8 18 375 50 190 110
Leaded tin bronze 1010 9.0 19 375 50 170 80
Leaded tin bronze 715 9.2 19 375 50 170 75
Aluminium bronze Ap 110 7.5 17 400 65 120 110
Aluminium bronze NiAp 210 7.6 17 420 40 200 120
Brass Ms 264 8.4 20 375 100 75 90
Special brass EMs 460 8.4 21 375 100 80 100
Special brass EMs5750 8.2 21 375 85 80 100

Corrosion resistance

The corrosion resistance of alloys has been shown in the table with evaluation scale 1 ... 5, where 5 means best resistance. Evaluation scale is meant for comparing copper metals only.

    Air,
fresh water
Sea water salt brine Soap solution, alcalic Weak acids Strong nonoxidizing acids
  PROMET          
Gun metal 5 5 4 4 3 1
Gun metal 737 5 4 4 3 2
Gun metal 310 5 4 4 4 2
Tin bronze 10 5 5 5 5 2
Tin bronze 12 5 5 4 5 2
Leaded tin bronze 1010 5 5 4 5 2
Leaded tin bronze 715 5 4 4 4 2
Leaded tin bronze 420 5 4 4 4 2
Aluminium bronze Ap 110 5 5 4 5 4
Aluminium bronze NiAp 210 5 5 4 5 4
Aluminium bronze NiAp 410 5 5 4 5 4
Brass Ms 264 4 3 2 1 1
Special brass EMs 460 3 2 2 1 1
Special brass EMs5750 4 4 3 2 1
Special brass EMs5760 4 4 3 2 1

Correspondence of standards

The table below shows the mutual correspondence of different standards

    EN 1982 DIN SIS
  PROMET      
Gun metal 5 CuSn5Zn5Pb5-C (CC491K) 1705 CuSn5ZnPb 145204
Gun metal 737 CuSn7Zn4Pb7-C (CC493K) 1705 CuSn7PbZn -
Gun metal 310 (SFS 2208 CuSn10Zn2) 1705 CuSn10Zn 145458
Tin bronze 10 CuSn10-C (CC480K) 1705 CuSn10 145443
Tin bronze 12 CuSn12-C (CC483K) 1705 CuSn12 145465
Leaded tin bronze 1010 CuSn10Pb10-C (CC495K) 1716 CuPb10Sn 145640
Leaded tin bronze 715 CuSn7Pb15-C (CC496K) 1716 CuPb15Sn -
Leaded tin bronze 420 CuSn5Pb20-C (CC497K) 1716 CuPb20Sn -
Aluminium bronze Ap110 CuAl10Fe2-C (CC331G) 1714 CuAl10Fe 145710
Aluminium bronze NiAp210 CuAl10Fe5Ni5-C (CC333G) 1714 CuAl10Ni 145716
Aluminium bronze NiAp410 CuAl11Fe6Ni6-C (CC334G) 1714CuAl11Ni -
Brass Ms 264 CuZn33Pb2-C (CC750S) 1709 CuZn33Pb2 145144
Special brass EMs5750 CuZn35Mn2Al1Fe1-C (CC765S) 1709 CuZn35Al1 145256
Special brass EMs5760 CuZn34Mn3Al2Fe1-C (CC764S) 1709 CuZn35Al2 -
Special brass EMs5775 CuZn25Al5Mn4Fe3-C (CC762S) - -

Information about corrosion resistance of copper alloys

Copper and all its alloys are very resistant to the following substances.

-all dry gases, with the exception of acetylene, which only brass can resist
-organic solvents, with the exception of chlorinated hydrocarbon, which brass resists poorly, but others quite well
-oils and liquid fuels and industrial products like, alcohols, asphalt, lacquers, linseed oil, plastics, etc.

Copper and its alloys, brass excluded, are extremely resistant to solutions and liquids of the following substances:

-alum, boric acid, formaline, sea air, creosote, milk, formic acid, sodium phosphate, washing soda, sodium sulphate, liquid glass, beer, tannic acid, soap solution, drinking water, condensation water, sea water, sewage water.

Copper and its alloys, brass excluded, are well resistant to solutions and liquids of the following substances:

-conditions in sulphite cellulose mills and paper mills, like climate, cooking acid, waste acid, washing fluids, damp sulphur dioxide, sulphurous acid, calcium bisulphite, acetic acid, ferro salines, phosphoric acid, fruit juices, carbon acid, damp carbon tetrachloride, damp tricolor ethylene, chlorinated lime, copper sulphate, magnesium chloride, milk acid, sodium carbonate, oxalic acid, oleic acid, sulphur, zinc sulphate, etc.

Copper alloys, brass excluded, are satisfactorily resistant to the following substances:

-black lye of sulphate cooking, bleaching solutions like sodium hypochlorite, chlorine solution and sodium peroxide, ammonium sulphate, aniline and aniline dyes, hydrofluoric acid, copper nitrate, sodium sulphide, zinc chloride, hydrochloric acid.

Copper alloys are not resistant to following substances:

-mercury and its salines, chromic acid, picrin acid, hydrocyanic acid and salines, that is cyanides, ferric chloride and –sulphate, ammonium and its salines.

 

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