NICKEL COPPER ALLOYS

NiCu alloys and their welding consumables have a Ni content of 50-70 % and are known as Silverin alloys.

Application example:

Silverin 404 (NiCu45) is used for electronic components due to its low magnetic permeability
Silverin 400 (NiCu30Fe) has excellent resistance to liquid acids and seawater corrosion. Typical applications are plant and apparatus construction, as well as ship building.

Silverin 500 (NiCu30Al) can be age hardened due to the increased Aluminum and Titanium content. The final hardness of the material prior to precipitation treatment is between 24-44 HRC. A prime application is the manufacture of doctor blades used in the paper industry. This alloy is also used to produce springs for the ship building industry.
IGS-Silverin 418 is the welding grade used to produce strip electrodes. This is used for overlay cladding of parts in the petrochemical and marine industries.

ALLOY

AMW-TRADE NAME	ALLOY	STANDARD	MATERIAL-No. DIN / UNS
Silverin 400	NiCu30Fe	DIN 17743 / ASTM B 127	2.4360 / N 04400
Silverin 500	NiCu30Al	DIN 17743	2.4375 / N 05500
Silverin 404	NiCu45

AMW-TRADE NAME		Ni (+Co)	Al	C	Cu	Fe	Mn	Si	Ti
Silverin 400	min	63			28	1.0
Silverin 400	max		0.5	0.15	34	2.5	2.0	0.5	0.3
Silverin 500	min	63	2.2		27	0.5			0.3
Silverin 500	max		3.5	0.2	34	2.0	1.5	0.5	1.0
Silverin 404	min	54.5
Silverin 404	max	55.5	0.1	0.1	bal.	0.3	0.1	0.1

AMW-TRADE NAME	DENSITY	THERMAL EXPANSION COEFFICIENT 20 – 100 ˚C	CURIE-TEMPERATURE	THERMAL CONDUCTIVITY AT 20 ˚C
	g/cm3	10 -6/K	˚C	W/m˚K
Silverin 400	8.8	14	50	26
Silverin 500	8.5	13.7	135* 100**	19
Silverin 404	8.9	13		21

* solution heat treated / ** precipitation hardened

AMW-TRADE NAME	TEMPER	YIELD STRENGTH Rp 0.2	TENSILE STRENGTH Rm	ELONGATION	HARDNESS
		MPa	MPa	%
Silverin 400	annealed	250	550	40	120 HB
Silverin 400	hard		860	5	200 HB
Silverin 500	annealed	275.415	620 – 760	50 – 25	85 HRB
Silverin 500	hard	655.1100	930 – 1275	25 – 15	25 – 44 HRC
Silverin 404	Annealed	160	450	45	55 HRB

THICKNESS TOLERANCES

THICKNESS	WIDTH 10 – 100	WIDTH > 100 – 200	WIDTH > 200 – 300
0.10 – 0.20	± 0.010	± 0.015	± 0.015
> 0.20 – 0.30	± 0.015	± 0.015	± 0.020
> 0.30 – 0.50	± 0.020	± 0.020	± 0.025
> 0.50 – 1.00	± 0.025	± 0.025	± 0.030
> 1.00 – 1.50	± 0.030	± 0.040	± 0.040
> 1.50 – 2.00	± 0.040	± 0.040	± 0.050
> 2.00	± 0.050	± 0.050	± 0.060

Other thickness and tolerances on request.

WIDTH TOLERANCES

WIDTH	THICKNESS 0.10 – 1.00	THICKNESS > 1.00 – 1.80	THICKNESS > 1.80 – 2.50
≤ 100	+ 0.2	+ 0.3	+ 0.5
> 100 – 200	+ 0.3	+ 0.5	+ 0.7
> 200 – 300	+ 0.6	+ 1.0	+ 1.2

Other thickness and tolerances on request.

WIDTH TOLERANCES

THICKNESS	LENGTH 500 – 300
0.40 – 2.00	+ 10

Other tolerances on request.

FORM	THICKNESS	WIDTH	LENGTH	COIL-ID	COIL-OD
Strip	0.10 – 2.50	10 – 300		300 / 400 / 500	max. 1100
Cut length	0.40 – 2.00	50 – 300	500 – 3000