Category » Titanium

Titanium and Titanium Alloys offer the best in strength to weight ratios, and in corrosion resistance to acids, chlorides and salt.  Titanium is approximately 45% lighter than steel and 60% heavier than aluminum.  You will find Titanium commonly used for military applications, aerospace, marine, chemical plants, process placts, power generation, oil and gas extraction, medical and sports applications.


ERTi-1

ERTi-1 is the lowest strength unalloyed, or commercially pure titanium available.  It is normally used in applications where ductility is paramount.  Applications include explosive cladding, expanded metal, and deep drawing applications.  As with all titanium alloys, ERTi-1 is extremely reactive above 1000°F and extra precaution must be taken to have a successful weld.  ERTi-a can be welded by the GTAW, GMAW and plasma arc processes.

Typical Deposit Analysis
C O H N Fe Ti
0.03 max 0.03 0.005 max 0.012 max 0.08 max Rem
  • Specifications: AWS A5.16 ASME SFA 5.16
  • Classification: ERTi-1
Typical Deposit Characteristics
Tensile Strength 35000 psi
Yield Strength 25000 psi
Elongation % in 2” 24%

ERTi-2

ERTi-2 is the "workhorse" of titaniums in the commercially pure titaniums  available.  It is normally used in applications such as pressure vessles, pipes, columns, tanks, shafts, valves, and fittings.  As with all titanium alloys, ERTi-2 is extremely reactive above 1000°F and extra precaution must be taken to have a successful weld.  ERTi-2 can be welded by the GTAW, GMAW and plasma arc processes

Typical Deposit Analysis
C O H N Fe Ti
0.03 max 0.08-0.16 0.008 max 0.015 max 0.12 max Rem
  • Specifications: AWS A5.16 ASME SFA 5.16
  • Classification: ERTi-2
Typical Deposit Characteristics
Tensile Strength 50000 psi
Yield Strength 40000 psi
Elongation % in 2” 20%

ERTi-5 (Ti 6Al-4V)

ERTi-5 (Ti 6Al-4V) is also know as 6-4 titanium.  It is the most common and widely used titanium alloy, due to it's relatively low cost and easy availability.  Weldability is good and it can be heat treated to a higher strength  or toughness.  ERTi-5 is used in aircraft components such as landing gear, wing spars, and compressor blades.  Corrosion resistance is comparable to the ERTi-2.  It can be welded by the STAW, GMAW and plasma arc processes.

Typical Deposit Analysis
C O H N V Fe
0.05 max 0.12-0.20 0.015 max 0.03 max 3.5-4.5 0.22 max
Al Ti        
5.5-6.75 Rem        
  • Specifications: AWS A5.16 ASME SFA 5.16
  • Classification: ERTi-5
Typical Deposit Characteristics
Tensile Strength 130000 psi
Yield Strength 120000 psi
Elongation % in 2” 10%

ERTi-7

ERTi-7 has the same mechanical properties as the ERTi-2 but has the addition of palladium.  This improves corrosion performance under mildly reducing conditionsor where crevice or under-deposit corrosion is a problem.  For this reason ERTi-7 can be considered for welding grade 2 or grade 16 titanium where improved corrosion performance is desired.  It can be welded by the GTAW, GMAW and plasma arc processes

Typical Deposit Analysis
C O H N Fe Ti
0.03 max 0.08-0.16 0.008 max 0.015 max 0.12 max Rem
Pd          
0.12-0.25          
  • Specifications: AWS A5.16 ASME SFA 5.16
  • Classification: ERTi-7
Typical Deposit Characteristics
Tensile Strength 50000 psi
Yield Strength 40000 psi
Elongation % in 2” 20%

ERTi-12

ERTi-12 is an intermediate strength grade of titanium orginally developed to provide enhanced crevice corrosion resistance in high temperature brines, but at a lower cost than the ERTi-7. ERTi-12 has better elevated temperature than ERTi-2 and is sometimes specified for pressure vessels or piping for its superior strength alone.  It can be welded by the GTAS, GMAW and plasma arc processes.

Typical Deposit Analysis
C Ni O H N Fe
0.03 max 0.06-0.09 0.08-0.16 0.008 max 0.015 max 0.15 max
Mo Ti        
0.2-0.4 Rem        
  • Specifications: AWS A5.16 ASME SFA 5.16
  • Classification: ERTi-12
Typical Deposit Characteristics
Tensile Strength 70000 psi
Yield Strength 50000 psi
Elongation % in 2” 12%