Copper-nickel is a group of materials which shows particular mechanical properties at elevated temperatures together with high resistance to a wide corrosion media.

Produced materials:

• CuNi 44 (2.0842)
• CuNi23Mn (2.0881)
• Alloy 400 – Monel 400 (UNS N04400 / 2.4360 and 2.4361)
• Alloy K-500 – Monel K500 (UNS N05500 / 2.4375)

Chemical composition

Alloy	C, max	Mn, max	Si, max	Cu	Ni, min	Fe	Ti, max
CuNi 44	–	–	–	balance	44.5	1	–
CuNi23Mn	–	1.5	–	balance	23.0	–	–
Alloy 400	0.3	2.0	0.5	28-34	63.0	min 2.5	–
Alloy K-500	0.2	1.5	0.5	27–34	63.0	0.5-2.0	0.3-1.0

Specification

Alloy	UNS	Werkstoff Number	ASTM	DIN
CuNi 44	–	2.0842	–	17471
CuNi23Mn	–	2.0841	–	17471
Alloy 400	N04400	2.4361	B 164	17752/17753
Alloy K-500	N05500	2.4375	B 164	17752/17753

Products

Product	Size, mm
bar	Ø5.0 - Ø50.0
strip	width 2.0 – 4.0
wire & rod	Ø0.2 – Ø12.0

Condition of supply

Alloys are supplied in the following conditions:

• hot finished
• cold drawn, special temper
• cold drawn, annealed
• cold drawn, annealed, aged.