Through experience, Weiss-Aug has developed expertise in metal selection. We understand the different characteristics of each metal and can help you determine which metal best suites your stamping and or insert molding application. Weiss-Aug also inspects all incoming raw materials for characteristics such as tensile strength, camber, elongation, thickness and hardness
Metal Types
Stainless Steel
• Iron-base alloys (50% minimum iron) containing at least 10% chromium
• Corrosion- and heat- resistant
• Specialty alloys with added elements
• Nickel for increased corrosion resistance, ductility and workability
• Molybdenum for increased corrosion-resistance, particularly resistance to pitting,
increased creep strength and high- temperature strength
• Columbium and titanium for stabilization
Example: SS 301
• Austenitic stainless
• Good corrosion resistance
• Elevated carbon to allow for cold working to a variety of tempers
• 1/4 hard, 1/2 hard, 3/4 hard, full hard, extra full hard and high yield tempers
• Easily formed in the annealed condition
• Deforming the material in the tempered condition as cracking and tearing can result
• Intermediate annealing only serves to reduce the hardness and therefore ultimate properties
Phosphorus bronze
• Alloy of copper with 3.5 to 10% of tin and a significant phosphorus content of up to 1%
(the phosphorus is added as deoxidizing agent during melting)
• Toughness, strength, low coefficient of friction, and fine grain
• Phosphorus also improves the fluidity of the molten metal
Example: Phosphorus Bronze 521 (CA521)
• Good capacity for cold worked
• Excellent suitability for soldering, brazing
• Relatively fair rating for resistance welding
Beryllium Copper
• Metal alloy of copper and 0.5 to 3% beryllium
• Significant metalworking and operating performance qualities
• Ductile, weldable, and machinable alloy
• Can be heat-treated to improve its strength, durability, and electrical conductivity
• Used in manufacturing of low-current contacts and electrical connectors
Example: Beryllium Copper 174
• High conductivity
• Superior strength
• Good surface and shape throughout coil
• Consistent physical properties
• Conductivity up to 60%
• Yield strength up to 125 KSI
Brass
• Alloy of copper and zinc
• Proportions of zinc and copper can be varied to create a range of brasses with
varying properties
Molybdenum
• Great conductors of heat
• Can withstand extremely hot temperature applications
• Used for lighting applicationsNylon (Poylamide)
Characteristics
• High strength and rigidity
• Very good impact strength
• Good elastic properties
• High resistance to chemicals
• Dimensional stability
• Low tendency to creep
• Exceptional sliding friction properties
• Simple processing
• Excellent electrical insulation properties
Applications
• Electrical connectors
• Automotive
Weiss-Aug has advanced expertise with engineered thermoplastic resins and composites including nylons, PBT’s, PPA’s and LCP’s.
Plastic Types
PPA: Polyphthalamid
Characteristics
• Mechanical properties that are ideal for metal replacement
• Excellent high-temperature capability
• Outstanding electrical properties
• Excellent resistance to fuels, glycols and chemicals
• Excellent dimensional stability- low moisture absorption
• Low vapor transmission rate
Applications
Automotive
• Air induction
• Electrical/Electronic
• Fuel systems
• Heating and cooling
Electrical
• Contactors
• Switches
• Motor components
Electronics
• LED’s
• SMT components
• Medical devices
HDPE High Density Polyethylene
Characteristics
• Toughness, rigidity and strength
• Excellent quality of stiffness
• Environmental stress crack resistance
Applications
• Consumer, industrial, etc
PBT Polybutylene terephthalate
Characteristics
• Excellent surface quality
• High gloss
• High rigidity, dimensional stability and heat resistance
• Addition of glass fibers can further enhance the properties of the product
• Low plate-out
• Reduced contamination of tooling
• Low moisture uptake
Applications
• Automotive exterior lighting industry
LCP Liquid Crystal Polymer
Characteristics
• Unique class of partially crystalline aromatic polyesters
• Based on p-hydroxybenzoic acid and related monomers
• Outstanding mechanical properties at high temperatures
• Excellent chemical resistance
Applications
• Automotive
• Electrical
• Electronic
Nylon (Poylamide)
Characteristics
• High strength and rigidity
• Very good impact strength
• Good elastic properties
• High resistance to chemicals
• Dimensional stability
• Low tendency to creep
• Exceptional sliding friction properties
• Simple processing
• Excellent electrical insulation properties
Applications
• Electrical connectors
• Automotive
