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Copper-Nickel / German Silver
(Copper-Tin-Zinc cast alloys)

DIN 1705 bzw. DIN EN 1982
 
Alloy  EN 
 number 
 Density 
ca.
    Composition    
 in % of weight 
Properties and use
CuNi10Fe1Mn 
DIN EN
12163
12420
12449
12451
1652
1653

CW352H  8.9 Ni 9,0 - 11,0
Fe 1,0 - 2,0
Mn 0,5 - 1,0

Cu Balance
Excellent resistance to erosion, cavitation and corrosion (especially seawater). Good weldability. Seawater lines, tubes, plates and sheets for heat exchangers and condensers. Air conditioners, apparatus engineering, brake lines.
 
Important
tempers
Tensile Strength
Rm
N/mm²
Yield Stress
Rp0,2

N/mm²
Elongation
A
%
Bars

M
R280



*

≥ 280


*
≥ 90


*
≥ 30

Plates

hard as rolled
R300


*

≥ 300


*
≥ 120


*
≥ 25

   * = mechanical properties as manufactured

Comparable Specifications::
CuNi10Fe1Mn, 2.0872, DIN 17664
C70600 UNS
CN 102 BS

 

Alloy  EN 
 number 
 Density 
ca.
    Composition    
 in % of weight 
Properties and use
CuNi30Mn1Fe 
DIN EN
12163
12420
12449
12451
1652
1653

CW354H  8.9 Ni 30,0 - 32,0
Fe 0,4 - 1,0
Mn 0,5 - 1,5

Cu Balance
Like Cu Ni10Fe1 Mn with improved strength properties. Areas of application like CuNi10Fe1 Mn, also piping in shipbuilding, oil coolers, desalination plants.
 
Important
tempers
Tensile Strength
Rm
N/mm²
Yield Stress
Rp0,2

N/mm²
Elongation
A
%
Bars

M
R340
R420


*

≥ 340
≥ 420


*
≥ 120
≥ 180


*
≥ 30
≥ 14

Plates

hard as rolled
R320


*

≥ 320


*
≥ 120


*
≥ 30

   * = mechanical properties as manufactured

Comparable Specifications::
CuNi30Mn1Fe, 2.0882, DIN 17664
C71500 UNS
CN 107 BS

 

 Alloy   EN 
 number 
 Density 
ca.
    Composition    
 in % of weight 
Properties and use
CuNi14Al3 

not in DIN /
DIN EN
CW354H  8.5 Ni 13,0 - 16,0
Al 2,0 - 3,0

Cu Balance
High-strength, corrosion and seawater-resistant construction material. Low permeability. Highly stressed parts such as bevel gears, valves, worm wheels, fittings, hydraulic components, aviation industry.
 
Important
tempers
Tensile Strength
Rm
N/mm²
Yield Stress
Rp0,2

N/mm²
Elongation
A
%
Benchmarks
≥ 780
≥ 590
≥ 10

 

 Alloy    
  
 Density 
ca.
    Composition    
 in % of weight 
Properties and use
NiCu30Fe 
DIN 17743
  2.4360   8.9 Cu 28,0 - 34,0
Fe 1,0 - 2,5

Ni Balance
Corresponding to "Monel metal", very high corrosion resistance and resistance to overheated vapour, organic acids, lactic and fatty acids. Construction parts for the food and chemical industries.