LEAD-FREE ARMATURE BRASS
As Sarbak Metal, our sensitivity regarding human health and environment
required the technological investments relevant to the lead-free brass to be used
in water armatures and the production of Federalloy with bismuth content with
American, European etc. patents. This way, lead, which has carcinogen effect on
the products which are closely related to human health such as water armatures,
is excluded from the alloy.
ENVIRONMENTAL EFFECT BENEFITS OF FEDERALLOY USAGE
FOR THE ENTERPRISES
In the products which are produced by Federalloy,
lead rate in the air is less than 10 micrograms/cubic meter at work periods of 8
hours and since it is below 30 micrograms / cubic meter there is no lead
penetration into blood. Since the lead rate in the air is below 50 micrograms /
cubic meter at work periods of 8 hours, it is not obligatory for the foundry
workers to use ventilation equipment. Carcinogen effects are completely
eliminated with lead-free production.
When Federalloy is melted, the toxic substance quantity originating from the
lead in the mould sand is below 1 ppm. Due to this, mould sand cannot be
classified as hazardous material and waste disposal cost is minimized.
TECHNICAL REASONS OF FEDERALLOY’S SUCCESS
Lead melts at a low temperature such as 327 °C and does not dissolve in brass
visually. Due to these characteristics, lead was used for a long time in brass
casting. Lead’s role in brass casting is that it fills in the micro gaps in the
structure of the alloy and provides structure firmness. Addition of brass to the
brass alloy increases its processing capability. But lead also has toxic effects.
Bismuth melts at 271°C and it comes after lead in the periodic table. Since it
has similar physical characteristics to lead it is a perfect alternative to lead. The
discriminative characteristics between bismuth and lead are; lead is soft and
ductile, but bismuth is hard and brittle. As a result of the works conducted with
Federalloy alloys, homogenous distribution of bismuth all over the alloy is
provided. This characteristic eliminated brittleness problem of bismuth and
.
Merkez : Arapcami Mah.Galata Mahkemesi Sok.Nafe
Han. No:13 D.12 Karaköy-Beyoğlu-ĠSTANBUL
Tel
: 0090 (212) 237 66 04 (PBX)
Fax
: 0090 (212) 253 51 45
E-Mail : [email protected]
Web
: www.sarbak.com.tr
Fabrika : Organize Sanayi Bölgesi Gazi Osman
Paşa Mah.Ġtfaiye Cad. No3
59500 - Çerkezköy - TEKĠRDAĞ
Tel
: 0090 (2829 725 19 60 (pbx)
Fax
: 0090 (2829 725 19 70
provided Federalloy alloys with perfect casting characteristic and same
mechanical characteristics with leaded brass . Carcinogen effect to to the
presence of lead is eliminated.
ENTERPRISE FRIENDLY FEDERALLOY
Casting temperature influences the characteristics of the alloy in leaded brass
when casting large or small parts. With Federalloy alloy casting is possible at
temperatures higher than leaded brass, but the casting quality is still the same.
Since Federalloy has a structure which does not evaporate, the alloy is in a
structure that is easy to calibrate and calculate.
Federalloy has a crystal structure that is better than leaded brass in rough casting
Since Federalloy alloys require less sanding periods, they have less surface
cleaning costs.
Homogenous distribution of bismuth in Federalloy alloys facilitates the
polishing of the product and as a result bright and polished appearance is
obtained.
Homogenous distribution of bismuth in Federalloy alloys also provides a better
surface. It gives a a better processing capability than leaded brass and due to
this, its processing cost is less.
27.05.2008
.
Merkez : Arapcami Mah.Galata Mahkemesi Sok.Nafe
Han. No:13 D.12 Karaköy-Beyoğlu-ĠSTANBUL
Tel
: 0090 (212) 237 66 04 (PBX)
Fax
: 0090 (212) 253 51 45
E-Mail : [email protected]
Web
: www.sarbak.com.tr
Fabrika : Organize Sanayi Bölgesi Gazi Osman
Paşa Mah.Ġtfaiye Cad. No3
59500 - Çerkezköy - TEKĠRDAĞ
Tel
: 0090 (2829 725 19 60 (pbx)
Fax
: 0090 (2829 725 19 70