MNTS15-20 (Nickel silver)

spring relays, parts for electrical engineering, components, produced by deep drawing utensils; Alloy well deformed in cold, corrosion resistant, good spring properties.

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Copper, copper alloys	Copper-Nickel Alloys

Chemical composition

Standard	Fe, %	Si, %	Mg, %	Bi, %	Mn, %	Cu, %	Zn, %	Sb, %	Pb, %	As, %	P, %	C, %	S, %	Ni + Co, %
Standard	Fe, %	Si, %	Mg, %	Bi, %	Mn, %	Cu, %	Zn, %	Sb, %	Pb, %	As, %	P, %	C, %	S, %	Ni + Co, %
GOST 492-2006	< 0.3	< 0.15	< 0.05	< 0.002	< 0.3	60.6–68.5	18–22	< 0.002	< 0.02	< 0.01	< 0.005	< 0.03	< 0.01	13.5–16.5

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Physical characteristics

Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\rho$ , $\frac{kg}{m^3}$	$c\cdot 10^{-3}$ , $\frac{J}{kg\cdot K}$	$R\cdot 10^{-6}$ , $\Omega\cdot m$
Temperature, °C	$E\cdot 10^{9}$ , $MPa$	$\alpha\cdot 10^{6}$ , $K^{-1}$	$\rho$ , $\frac{kg}{m^3}$	$c\cdot 10^{-3}$ , $\frac{J}{kg\cdot K}$	$R\cdot 10^{-6}$ , $\Omega\cdot m$
20	135		8600	0.398	0.26
100		16.6

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	d5, %	Treatment
The wire is soft.	GOST 5220-78				343	15–30
Wire is hard.	GOST 5220-78				686–1078
Tape softly.	GOST 5187-2003				340	27–30
The tape is hard.	GOST 5187-2003				540–690	2
The band is soft.	GOST 5063-73				340	35
The strip is hard.	GOST 5063-73				540	1

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
The alloy is soft			690
The alloy is soft			1570–1710

Casting and technological parameters

melting point, °C	Hot working temperature, °C	annealing temperature, °C
melting point, °C	Hot working temperature, °C	annealing temperature, °C
1080	800–970	700–750

Analogues

USA
USA
Nickel silver 65-15

Standards

Standard	Description
Standard	Description
GOST 492-2006
GOST 492-1973
GOST 5063-73
GOST 5063-16
GOST 5220-18
DSTU GOST 492:2007

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mg	%	Magnesium
Bi	%	Bismuth
Mn	%	Manganese
Cu	%	Copper
Zn	%	Zinc
Sb	%	Antimony
Pb	%	Lead
As	%	Arsenic
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Ni + Co	%	Nickel + Cobalt

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$E\cdot 10^{9}$	$MPa$	Elastic modulus
$\alpha\cdot 10^{6}$	$K^{-1}$	Coefficient of thermal (linear) expansion (range 20°C–T)
$\rho$	$\frac{kg}{m^3}$	The density of the material
$c\cdot 10^{-3}$	$\frac{J}{kg\cdot K}$	The specific heat of the material (range 20°C–T)
$R\cdot 10^{-6}$	$\Omega\cdot m$	Electrical resistivity

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma _{U}$	$MPa$	Ultimate tensile strength

Description of the casting and technological parameters

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
melting point	°C	The temperature at which solid crystalline body makes the transition to the liquid state and Vice versa
Hot working temperature	°C	The temperature at which the plastic-deformed metal recrystallizes during the pressure treatment
annealing temperature	°C	The temperature at which the processes return recrystallization and homogenization of the metal to reduce its hardness for subsequent machining