Copper alloys

Cu - Alloy (bronze) are alloys based on copper with aluminum, tin or silicon, often with alloying elements of iron, nickel and manganese. These alloys are mainly used in shipbuilding, mining, pulp and paper industry and the chemical industry, wherever a wear-resistant, low friction weld surface is required.


Brochure
Alunox Handbuch
PDF

Chemical composition (average values in % of the welding consumable)

ALUNOXMat. No.EN 14640AWS / ASME
SFA - 5.7
CuSnAlFeSiMnNiZnASPbPOthersPDF
Standard dimensions and standard rinses from stock - Special designs on request
CuSn 2.1006 Cu 1898 ER-Cu Rem. 0,5-1,0 0,01 0,05 0,5 0,1 -0,5  0,3 - 0,05 0,02 0,02 0,1
Cu Sn 6 2.1022 Cu 5180 ER-CuSn-A Rem. 4,0-7,0 0,01 0,01       0,1    0,02 0,01-0,4 0,4  
CuSn 12 2.1056 Cu 5410 - Rem. 11,0–13,0 0,01 0,1       0,1    0,02  0,04 0,4 
CuSi 3 2.1461 Cu 6560 ER-CuSi-A Rem. 0,2 0,01 0,5 2,8–4,0 3,0   0,2    0,02  0,02 0,4   
CuAl 8 2.0921 Cu 6100 ER-CuAl-A1 Rem. - 6,0–9,5 0,5 0,2   0,8 0,2    0,02    0,4   
CuAl 8 Ni2 2.0922 Cu 6327 - Rem. - 7,0–9,5 0,5–2,5 0,2 2,2 0,5–3,0 0,2    0,02    0,4     
CuAl8 Ni6 2.0927 Cu 6328 ER-CuNiAI Rem. - 8,5–9,5 3,0–5,0 0,2 0,8 4,0–6,0       0,02  0,4     
CuAl 9 Fe 2.0932 - ER-CuAI-A2 Rem. - 9,0–11,5 0,5–1,5 max. 0,1   max. 1,0 0,02      0,02 0,4     
CuAg 2.1211   Rem.           max. 1,0              

Mechanical properties of the untreated weld material (average values) at room temperature [20°C]

ALUNOXMat. No.Tensile Strength
Rm (N/mm²)
Yield Strength
(N/mm²)
Stretching limit
%
Hardness
HB
CnSn 2.1006 220   30 60
Cu Sn 6 2.1022 300 150 20 80
CuAl 8 2.0921 430 200 40 100
CuSi 3 2.1461 360 150 40 80
CuSn 12 2.1056 350 200 30 100
CuAl 8 Ni 2 2.0922 530 270 30 140
CuAl 9 Ni 5 FE 2.0923 500 380 10 150
CuAl 9 Fe 2.0937 430 200 40 100
CuAg 2.1211 220 680 18 60 
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shipbuilding
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railway
vehicle
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vehicle
construction
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vessel
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automotive
industry
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wear
protection
technology
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