Do’s and Don’ts of Titanium Fasteners
Titanium
is a great material with strength, lightness of weight, & corrosion
resistance but there are also instances that titanium should not be used. This
brief blog will covers the do’s and don’ts of titanium screws.
Do
Use for Saltwater & Chloride Resistance
One of the most important uses of titanium screws is in saltwater environments.
Naval as well as industries like desalination & offshore oil rely on titanium for
their incomparable resistance to saltwater. Titanium fasteners are resistant to
both rapid moving & stagnant seawater up to a mile deep – even at
temperatures of up to 500°F.
Like
seawater, titanium screws are also almost inert to all chloride &
chlorine solutions. This is due to titanium’s ability to quickly regenerate its
defensive passive layer in the presence of oxygen. Titanium fasteners
are also resistant to:
• Chlorite
• Hypochlorite (Bleach)
• Chlorate
• Perchlorate
• Chlorine dioxide
• Hypochlorite (Bleach)
• Chlorate
• Perchlorate
• Chlorine dioxide
Do
Use for Strength & Lightness
Titanium grade offers industry impressive strength:
148 ksi UTS & 138 ksi yield. What
makes titanium’s strength truly unique is that it is also extraordinarily light. Grade 5
fasteners are 4 times stronger than 316 stainless steel at nearly half the weight. (Grade 2 titanium is approximately 2 times stronger.) This unparalleled strength-to-weight ratio makes titanium ideal for medical, aerospace, & military applications.
makes titanium’s strength truly unique is that it is also extraordinarily light. Grade 5
fasteners are 4 times stronger than 316 stainless steel at nearly half the weight. (Grade 2 titanium is approximately 2 times stronger.) This unparalleled strength-to-weight ratio makes titanium ideal for medical, aerospace, & military applications.
Don’t
Use in Acids
Titanium fasteners offer outstanding corrosion resistance to salt water &
chlorides but NOT strong acids. When exposed to acids like sulfuric
(H2SO4), hydrochloric (HCl), their protecting passive layer is attacked &
can rapidly corrode in the right concentrations & temperatures.
Don’t
Use in Dry Chlorine
Though
titanium
screws are ideal for almost all chloride & chlorine applications they
cannot be used in the absence of water. Dry chlorine & chlorine gases will
make them quickly corrode & even ignite. Typically 1% moisture (at room
temperature) & 1.5% (at high temperature) is sufficient for titanium to
regenerate its passive layer & remain resistant.
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