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Characteristics for grade VPr4 ( ВПр4 )

Grade :	VPr4 ( ВПр4 ) ( ВПр-4 )
Classification :	Copper-zinc solders
Equivalent grades:	Is absent

Chemical composition in % for grade VPr4 ( ВПр4 )

Fe	Si	Mn	Ni	P	Co	Cu	B	Impurity	-
1 - 1.5	0.8 - 1.2	27 - 30	28 - 30	0.1 - 0.2	4 - 6	30.35 - 38.45	0.15 - 0.25	all 0.5	Cu - basis

Comment: Zn is a basis; the percentage of Zn is given approximately.

Specification :

Mechanical properties :
s_в	- Tensile strength , [MPa]
s_T	- Yield stress, [MPa]
d₅	- Specific elongation at fracture , [ % ]
y	- Reduction of area , [ % ]
KCU	- Impact strength , [ kJ / m²]
HB	- Brinell hardness , [MPa]

Physical properties :
T	- Test temperature , [Grade]
E	- Young modulus , [MPa]
a	- Coefficient of linear expansion (range 20^o - T ) , [1/Grade]
l	- Termal (heat) condition coefficient , [Watt/(m·Grade)]
r	- Density , [kg/m³]
C	- Specific heat ( range 20^o - T ), [J/(kg·Grade)]
R	- Electrical resistance , [Ohm·m]

VPr4 ( ВПр4 ) - Copper-zinc solders: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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