Cupro NS

Description

Cupro NS CuNi2SiCr Nickel Silicon Copper Alloy

CuproNSS® is a copper alloy developed by Sağlam Metal.

Suitable for applications requiring high mechanical properties along with good electrical and thermal conductivity.

COMMON FABRICATION PROCESSES

CHEMICAL COMPOSITION

Elements
Cu^(1,2)	P	Ni	Si
(1) Cu value includes Ag. (2) Cu + Sum of Named Elements 99.5% min.
Min (%)		0.01	0.8	0.15
Max (%)	Rem	0.05	1.8	0.35

MECHANICAL PROPERTIES

Form	Temper	Temper Code	Tensile Strength (ksi)	YS-0.2% Offset (ksi)	Elongation (%)	Vickers Hardness, 500 gm
* Measured at room temperature, 68°F (20°C).
Flat Products	1/2 Hard	H02	60 Min	54 Min	7 Min	125 Min
	1/4 Hard	H01	52 Min	40 Min	8 Min	100 Min
	3/4 Hard	H03	67 Min	62 Min	5 Min	135 Min
	Extra Hard	H06	75 Min	72 Min	3 Min	150 Min
	Extra Spring	H10	95 Min	85 Min	1 Min	180 Min
	Hard	H04	71 Min	66 Min	4 Min	145 Min
	Mill-hardened Temper, TM – 3/4 HM	TM03	67 Min	50 Min	12 Min
	Mill-hardened Temper, TM – Hard	TM04	71 Min	60 Min	10 Min	145 Min
	Mill-hardened Temper, TM – XHMS Spring	TM08	84 Min	74 Min	6 Min	170 Min
	Mill-hardened Temper, TM -XHM – Extra Hard	TM06	75 Min	64 Min	8 Min	150 Min
	Spring	H08	84 Min	78 Min	2 Min	170 Min

PHYSICAL PROPERTIES

Melting Point – Liquidus°F	1944
Densitylb/cu in. at 68°F	0.322
Specific Gravity	8.94
Electrical Conductivity% IACS at 68°F	55 ⁽¹⁾
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F	149
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F)	9.3
Modulus of Elasticity in Tensionksi	18500
Modulus of Rigidityksi	6400

FABRICATION PROPERTIES

Soldering	Good
Brazing	Good
Oxyacetylene Welding	Good
Gas Shielded Arc Welding	Good
Coated Metal Arc Welding	Fair
Spot Weld	Good
Seam Weld	Good
Butt Weld	Good
Capacity for Being Cold Worked	Good
Capacity for Being Hot Formed	Excellent
Forgeability Rating	50
Machinability Rating	30

APPLICABLE SPECIFICATIONS

Form	Specific Sub-Form	Application	System	Standard	Description
Sheet & Strip			ASTM	B422/B422M	COPPER-ALUMINUM-SILICON-COBALT ALLOY AND COPPER-NICKEL-ALUMINUM-SILICON ALLOY SHEET AND STRIP
Strip			ASTM	B888/B88M	COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS

COMMON FABRICATION PROCESSES