Selected page of SPS Titan Titanium Fasteners
Titanium Alloy Fasteners
Offering an Unprecedented
Combination of Strength
and Light Weight
| Optimized Beta-Titanium Alloy
SPS TITAN 761 titanium alloy is an optimized beta-titanium
alloy, which conforms to the chemistry requirements of AMS
4958 (3Al-8V-6Cr-4Zr-4Mo). Following an exhaustive study of
candidate materials, SPS chose this alloy and prescribed special
processing requirements for the raw material so that the alloy
meets target material property requirements.
Other titanium alloys, like Ti-6Al-4V (AMS 4967), are
acceptable for fastener manufacturing. However, the size
threshold for Ti-6Al-4V is 3/4". Larger parts do not meet the
strength requirements of aerospace bolt specifications due to
hardenability limitations.
Titanium alloys that are able to maintain full strength in larger
size parts have formability, notch sensitivity and property scatter
issues that limit their use for fastener production.
SPS TITAN 160 Titanium Alloy Fasteners Larger
Users forced to switch from titanium to heavier steel or CRES
alloy parts because of fastener size design r
| SPS TITAN 180
Alloy Fasteners Stronger
Extending design versatility even further,
SPS TITAN 180 alloy fasteners offer users a
one-for-one replacement for high strength
alloy-steel and CRES-alloy fasteners. SPS
TITAN 180 alloy fasteners, manufactured from
the SPS TITAN 761 alloy, step up to 180 ksi
tensile and 108 ksi shear strength levels. This
matches the properties of heavier fasteners, while
delivering a 40% weight savings.
SPS TITAN 180 alloy bolts are available in diameters up to 1".
Bolts as well as nuts are available in a variety of configurations.
SPS TITAN 160 Alloy and
SPS TITAN 180 Alloy Fasteners
Aerospace Application Advantages:
High reliability
Reduced weight
Wide design flexibility
Low inspection costs
Low MRO costs
Decreased life cycle costs
A Note About Fatigue Strength
Aerospace fatigue strentgh requirements typically call for fasteners to average 65,000
cycles when tested at R=1. R is the ratio of the minimum fatigue load to the
maximum fa
| MULTIPHASE MP35N Superalloy:
Provides the ultimate combination of strength and corrosion
resistance. The recommended temperature range is from
cryogenic through 750 F.
MULTIPHASE MP159 Superalloy:
Formulated to meet the demands of turbine engine
manufacturers, offers an operating temperature capability to
1100 F, while maintaining the high strength of MP35N alloy and
excellent corrosion resistance.
AEREX 350 Superalloy:
Greater toughness than the MULTIPHASE alloys at cryogenic
temperatures. Pushes the maximum operating temperature
envelope to 1350 F. No other fastener alloy can match the
combination of strength and temperature range. Corrosion
oxidation and sulfidation resistance are excellent.
MP98T Superalloy:
Offers an unmatched combination of 180 ksi tensile strength,
fracture toughness and corrosion resistance for aerospace engine
and airframe applications.
Minimum Properties
SPS TITAN 160 SPS TITAN 180
Bolts or
Bolts or
Fasteners
Fasteners
Tensile S
|
|
