Chromium zirconium copper alloy is used in areas where good mechanical properties are required to work in high electrical and thermal conductivity. This is a high strength, seam, high conductivity alloy for spot, butt and projection welding which is ideal for plain as well as coated and galvanized sheets.

Standards

• Indian Standard: IS 8365
• International Standards: ASTM C-18150, DIN 17666 WN 2.1293, BS 2874 CC 102, ISO CuCrZr, BS EN CW106C

Chemical Composition

• Cr = 0.5 -1.2 %
• Zr = 0.03 -0.30%
• Cu = Balance

Mechanical Properties

	T.S.	Y.S.0.2	E %	Hardness
	M.P.A.	M.P.A.		HRB
	Min	Min	Min	Min
Rods < Dia 40	490	390	8	75
Rods >Dia 40	400	350	10	68
Wheels/Forgings	350	260	15	65

Physical Properties

Density	8.9 g/cc
Thermal Conductivity :	>0.77 cal/cm.cm²/s/°C
Electrical Conductivity :	>75% IACS
Softening Temp. :	500°C

Nickel / Cobalt Beryllium Copper Alloy is a high strength alloy and is ideal for spot and seam projection welding of high temperatures and high strength stainless steel.

Standards
Indian Standard: IS 8365

International Standards

ASTM B 441	C-17510	C-17500	--
Din 17666 WN	2.09	2.13	appr.2.1285
ISO	CuNi2 Be	CuCo2Be	CuCoiNibe
BS EN	CW 104 C	CW 110 C	CW 103 C

Chemical Composition : (%)

NiBeCu	CoBeCu	CoNiBeCu
Ni= 1.4 -2.2	Co = 2.0-2.7	Co = 0.8-1.3
Be = 0.2 -0.6	Be = 0.4-0.7	Ni = 0.8-1.3
Cu = Balance	Cu = Balance	Bc = 0.4 -0.7
		Cu = Balance

Physical Properties

Density	8.8g/cc
Thermal Conductivity	>0.47 cal/cm.cm²/s/°C
Electrical Conductivity	> 45% IACS
Softening Temp	500°C

Mechanical Properties

	T.S.	Y.S.0.2	E %	Hardness
	M.P.A.	M.P.A.		HRB
	Min	Min	Min	Min
Rods < Dia 40	650	540	8	95
Rods > Dia 40 Wheels/Forgings	590	490	8	92

Beryllium copper alloy is a high strength alloy with non-sparking and non-magnetic qualities. The alloy supports outstanding metalworking, forming and machining and is suitable for the shafts of seam welding machines, for electrode holders, inserts for dies and load bearing components.

Standards
Indian Standard : IS 8365

International Standards
ASTM B196 C-17200, DIN 17672 WN2.1247, ISO CuBe2, BS EN CW101C

Chemical Composition: (%)

Be = 1.8 -2.1

Co = 0.2-0.6

Cu = Balance

Physical Properties

Density	8.3 g/cc
Thermal Conductivity :	>0.3 cal/cm.cm²/s/°C
Electrical Conductivity :	> 22% IACS
Softening Temp. :	300°C

Mechanical Properties

T.S.	Y.S.0.2	E %	Hardness
M.P.A.	M.P.A.		HRC
Min	Min	Min	Min
1050	850	2	35

Tellurium Copper Alloy is known for its high conductivity (90% IACS) and high machinability (90) which makes it ideal choice for making electrical parts that require extensive machining especially on automatic/CNC machines. Also, this range is highly suitable for gas nozzles and electrical components.

Standards

International Standards
ASTM B301 C-14500, DIN 17666 WN 2.1546, BS 2874 C 109, ISO CuTe, BS EN CW118C

Chemical Composition: (%)

Te = 0.3 -0.7

P = 0.004 -0.012

Cu = Balance

Physical Properties

Density	8.9 g/cc
Thermal Conductivity :	>0.8 cal/cm.cm²/s/°C
Electrical Conductivity :	> 85% IACS
Softening Temp. :	350°C

Mechanical Properties

T.S.	Y.S.0.2	E %	Hardness
M.P.A.	M.P.A.		HRB
Min	Min	Min	Min
260	200	8	33

Zirconium Copper Alloy is a moderate strength, high conductivity alloy used for spot and seam welding of rotor bars & rings for electric motors, aluminum alloys & bronzes, switches and circuit breakers.

Standards

Indian Standard : IS 8365

International Standards : ASTM C-15000, DIN 17666 WN 2.1580, BS 2874 CW 120 C, ISO CuZr, BS EN CW120C

Chemical Composition

Zr = 0.1 - 0.3 %

Cu = Balance

Mechanical Properties

	T.S.	Y.S.0.2	E %	Hardness
	M.P.A.	M.P.A.		HRB
	Min	Min	Min	Min
Rods < Dia 25	350	310	13	60
Rods >= Dia 25	300	250	20	55
Wheels/Forgings	200	160	45	40 R F

Physical Properties

Density	8.9 g/cc
Thermal Conductivity :	> 0.80 cal/cm.cm²/s/°C
Electrical Conductivity :	> 85% IACS
Softening Temp. :	500°C

Nickel Silicon Chromium Copper has Higher strength but lower conductivity compared to CrZrCu. Suitable for spot, seam, projection welding particularly in stainless steel and high temp. and high strength steels. Properties and application of NiSiCrCu are same as Ni/CoBeCu but it is a beryllium free alloy.

Standards

Indian Standard : IS 8365

International Standards : ASTM C-18000, DIN 17666 WN 2.0855, BS EN CW 111C

Chemical Composition: (%)

Ni = 1.8 - 3.0

Si = 0.4 - 0.8

Cr = 0.1 - 0.8

Cu = Balance

Physical Properties

Density	8.8g/cc
Thermal Conductivity	> 0.47 cal/cm.cm²/s/°C
Electrical Conductivity	> 45% IACS
Softening Temp	500°C

Mechanical Properties

	T.S.	Y.S.0.2	E %	Hardness
	M.P.A	M.P.A.		HRB
	Min	Min	Min	Min
Rods < Dia 40	650	540	8	95
Rods > Dia 40 Wheels/Forgings	590	490	8	92