CHEMICAL COMPOSITION (UNI 4894:1962)

Alloy

theoretical

In semi-finish pcs

Cu

67

66 - 68

Pb max

-

0,20

Fe max

-

0,15

Al max

-

0,05

Sn max

-

0,20

Si max

-

0,15

Mn max

-

0,10

Ni max

-

0,30

impurity

-

0,40

Zn

33

Rest


PHYSICAL CHARACTERISTICS (UNI 4894:1962)

Alloy

Spring brass sheet 10 H10

Specific weight
(kg/dm3)

8,50

Melting range(C)

905 - 940

Specific heat
a 20 C (cal/kg)

0,09

Thermal conductivity
at 20 C [cal/(s cm C)]

0,278

Linear coeff. of thermal exp. From 25 to 300C (I/C)

20,2 x 10-6

Resistivity at 20 C
(μΩ 0 cm)

6,63

Modulus of elasticity
(kg/mm2)

11.000

Structure

Alpha


MECHANICAL PERFORMANCE (UNI 4894:1962)

Alloy

Spring brass sheet 10 H10

Ultimate tensile strenght
R (kg/mm2)

36 - 43

Yeld strenght
S (0,2) (kg/mm2)

20 - 36

Elongation A5 (min %)

26

Hardness Brunnel HB
(kg / mm2)

75 - 115


REFERENCE STANDARDS

UNI 4894:1962 Wrought copper alloys Binary brass with CU 67% and ZN 33%
UNI EN 1652:1999 Copper and copper alloys - Plate, sheet, strip and circles for general purposes