zinc alloys


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zinc alloys

Alloys Men

Alloys for pressure
die-casting

Properties
quality control
guidelines
and norms
Supply
General
prperties

Alloys with high
aluminium content

Properties
quality control
guidelines
and norms
Supply
General
properties

Alloys for
centrifugal casting

Properties
quality control
guidelines
and norms
Supply
General
properties

 

 

zinc alloys
 

Certifications
zinc alloys
                       2002

 

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zinc alloys

GENERAL PROPERTIES

 

 
PHYSICAL  SIZIN 8  SIZIN 12  SIZIN 27
 
Density Kg/dm3  6,3  6,0  5,0
Melting range C  375404  380432  375484
Specific heat capacity J/KgK  435  450  525
Thermal conductivity at 20C W/mK  115  116  125,5
Resistivity at 20C

x10-8Ωm

 6,2  6,1  5,8
Optimum casting range
under pressure
C  420440  465520  540580
Optimum sand casting range C  -  460582  540580
Thermal linear expansion cm/cmx10-6/C    23,2  24,1  26
Linear shrinkage %  1,1  1,25  1,3
Dimensional stability at 20C cm/cm/anno  -  0,00013  0,02 dopo2anni
Electrical conductivity at 20C Ms/m  16,1  16,4  17,2
Mould temperature
for pressure die-casting
C  200  200  200
 

 

 
CHEMICAL (test%) - EN 1774  SIZIN 8  SIZIN 12  SIZIN 27
 
Aluminium  8,28,8  10,811,5  25,528,0
Copper  0,91,3  0,51,2  2,02,5
Magnesium  0,020,03  0,020,03  0,0120,02

Impurities: Lead  max 0,005  max 0,005  max 0,005
Cadmium  max 0,005  max 0,005  max 0,005
Tin  max 0,002  max 0,001  max 0,002
Iron  max 0,035  max 0,05  max 0,07
Nickel  max 0,001  -  -
Silicon  max 0,035  max 0,05  max 0,07
Tot. impurities: Cd+Pb+Sn     max 0,080  max 0,080  max 0,080
Zinc  remainder  remainder  remainder
 

 

 
MECHANICAL  SIZIN 8  SIZIN 12 SIZIN 27
Sand
casting
Pressure die-casting Sand
casting
Pressure die-casting Sand
casting
Pressure die-casting
 
Tensile strength MPa 240270 357378 270310 385405 400440 407440
Linear elongation (51mm) % 12  610 34 45 36 12
Brinell hardness (500 kg) HB 8090 100106 9296 95115 110120 110120
Yield strength (0,2%) MPa 195 270290 200 300320 370 350370
Tensile strength at compression (0,1%) MPa - 250 - 260 330 330
Impact energy J 20 3248 2327 2037 3154 916
 

 

ALLOYS FOR HOT DEE GALVANIZING
Among zinc-aluminium alloys, Simar produces two alloys for hot deep galvanizing SIZIN 5 and SIZIN 10 with the following chemical compositions:

 
CHEMICAL (test%)   SIZIN 5  SIZIN 10
 
Aluminium  4,65  9,610
Copper  max 0,002  max 0,002
Magnesium  -  -

Impurities: Lead  max 0,03  max 0,03
Cadmium  max 0,02  max 0,02
Tin  max 0,001  max 0,001
Iron  max 0,02  max 0,02
Tot. impurities: Cd+Pb+Sn     -  -
Zinc  remainder  remainder
 

 

 

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