Download Products 2 - City Special Metals

Products 2
INVAR 36
ASTM F-1684, UNS 93603, UNS K93050
Alloy 36 is a 36% nickel-iron alloy that exhibits a near zero rate of
thermal expansion which is roughly one tenth the expansion rate of carbon
steel at temperatures from around -100°C up to 200°C. Along with this very
low coefficient of linear thermal expansion over a broad range of
temperatures, up to around 200 °C, Invar 36 retains superior strength and
toughness at cryogenic temperatures, making it suitable for a variety of
low temperature applications.
ALLOY 42
ASTM F30, UNS K94100
Alloy 42 is a nickel-iron controlled-expansion alloy containing 42%
nickel, balance Iron. It has a low and nominally constant coefficient of
thermal expansion from room temperature to about 570°F (300°C). Alloy 42
is mainly used for semiconductor lead frames in integrated circuits,
stencil/etching, and used in telecommunications, aircraft industry,
medical, electronics and automotive industries.
COPPER (OFE) C110 / C10100
Oxygen-free high thermal conductivity (OFHC) copper is widely used in
cryogenics. The method of producing OFHC copper ensures extra high grade
of metal with a copper content of 99.99%. Characteristics are high
ductility, high electrical and thermal conductivity, high impact strength,
good creep resistance, ease of welding, and low relative volatility under
high vacuum For industrial applications, oxygen-free copper is valued more
for its chemical purity than its electrical conductivity. OF/OFE grade
copper is used in plasma deposition (sputtering) processes, including the
manufacture of semiconductors and superconductor components, as well as in
high vacuum devices such as particle accelerators. In any of these
applications, the release of oxygen or other impurities can cause
undesirable chemical reactions with other materials in the local
environment.
ALLOY 625
Alloy 625 is a nonmagnetic, corrosion – and oxidation-resistant, nickelbased alloy. Its outstanding strength and toughness in the temperature
range cryogenic to 2000°F (1093°C) are derived primarily from the solid
solution effects of the refractory metals, columbium and molybdenum, in a
nickel-chromium matrix. The alloy has excellent fatigue strength and
stress-corrosion cracking resistance to chloride ions. Some typical
applications for alloy 625 have included heat shields, furnace hardware,
gas turbine engine ducting, combustion liners and spray bars, chemical
plant hardware, and special seawater applications.
ALLOY 718
Alloy 718 is a precipitation hardenable nickel-based alloy designed to
display exceptionally high yield, tensile and creep-rupture properties at
temperatures up to 1300°F. The sluggish age-hardening response of alloy
718 permits annealing and welding without spontaneous hardening during
heating and cooling. This alloy has excellent weldability when compared to
the nickel-base superalloys hardened by aluminium and titanium. This alloy
has been used for jet engine and high-speed airframe parts such as wheels,
buckets, spacers, and high temperature bolts and fasteners.
MOLYBDENUM
Molybdenum can meet the most exacting requirements. With its unique
mechanical and chemical properties molybdenum has a very high melting
point, a low coefficient of thermal expansion and a high level of thermal
conductivity, it is used in many different industries. Molybdenum is used
to produce ribbons and wires for the lighting industry, semiconductor base
plates for power electronics, glass melting electrodes, hot zones for
high-temperature furnaces and sputtering targets for coating solar cells
and flat screens.
TITANIUM
Titanium has a low density and is a strong, lustrous, corrosion-resistant
(including sea water, aqua regia and chlorine. Titanium can be alloyed
with iron, aluminium, vanadium, molybdenum, among other elements, to
produce strong lightweight alloys for aerospace (jet engines, missiles,
and spacecraft), military, industrial process (chemicals and petrochemicals, desalination plants, pulp, and paper), automotive, agri-food,
medical prostheses, orthopaedic implants, dental and endodontic
instruments and files, dental implants, sporting goods, jewellery, mobile
phones, and other applications.
17-4 PH STAINLESS STEEL
17-4 PH Stainless Steel, UNS S17400, AMS 5643, ASTM A564, and ASTM A693
Grade 630.17-4 PH is a precipitation hardening martensitic stainless
steel. Typical 17-4 PH usage is seen in applications requiring high
strength and a modest level of corrosion resistance. Strength and
toughness desired can be manipulated by temperate range in the heat
treatment process.17-4 PH stainless steel can be used for a variety of
applications including: pump shafts, oil path, mechanical seals, and
within the aerospace industry. Its composition is carbon, chromium,
Columbian + tantalum, copper, manganese, nickel, phosphorous, silicon, and
sulphur.
SUPER DUPLEX
Super Duplex stainless steels have a mixed micro structure of austenite
and ferrite, the aim usually being to produce a 50/50 mix, although in
commercial alloys the ratio may be 40/60. Duplex stainless steels have
roughly twice the strength compared to austenitic stainless steels and
also improved resistance to localized corrosion, particularly pitting,
crevice corrosion and stress corrosion cracking. They are characterized by
high chromium (19–32%) and molybdenum (up to 5%) and lower nickel contents
than austenitic stainless steels.
PHOSPHOR BRONZE
Phosphor bronze (sometimes sold with the shorter name Phos Bronze) is an
alloy of copper with 3.5 to 10% of tin and a significant phosphorus
content of up to 1%. The phosphorus is added as deoxidising agent during
melting. These alloys are notable for their toughness, strength, low
coefficient of friction, and fine grain. The phosphorus also improves the
fluidity of the molten metal and thereby improves the castability, and
improves mechanical properties by cleaning up the boundaries. Phosphor
bronze is used for springs, bolts and various other items used in
situations where resistance to fatigue, wear and chemical corrosion are
required (e.g., a ship’s propellers in a marine environment). The alloy is
also used in some dental bridges.
ALUMINIUM BRONZE
Aluminium is the main alloying metal added to copper, in contrast to
standard bronze (copper and tin) or brass (copper and zinc) . A variety of
aluminium bronzes of differing compositions have found industrial use,
with most ranging from 5% to 11% aluminium by weight, the remaining mass
being copper; other alloying agents such as iron, nickel, manganese, and
silicon are also sometimes added to aluminium bronzes. General sea waterrelated service, Water supply, Oil and petrochemical industries (i.e.
tools for use in non-sparking environments), specialized anti-corrosive
applications.
ALUMINIUM
Aluminium alloys are alloys in which aluminium (Al) is the predominant
metal. The typical alloying elements are copper, magnesium, manganese,
silicon and zinc. There are two principal classifications, namely casting
alloys and wrought alloys, both of which are further subdivided into the
categories heat-treatable and non-heat-treatable. About 85% of aluminium
is used for wrought products, for example rolled plate, foils and
extrusions. Cast aluminium alloys yield cost-effective products due to the
low melting point, although they generally have lower tensile strengths
than wrought alloys. The most important cast aluminium alloy system is
Al–Si, where the high levels of silicon (4.0–13%) contribute to give good
casting characteristics. Aluminium alloys are widely used in engineering
structures and components where light weight or corrosion resistance is
required.