Advanced Metals
Ti-0.3Mo-0.8Ni (Gr12)
Alloy Ti-0.3Mo-0.8Ni (UNS R533400, or ASTM grade 12) has applications similar to those for unalloyed titanium but has better strength and corrosion resistance. It is highly weldable, near-alpha titanium alloy exhibiting improved strength and optimum ASME Code design allowable at increased temperatures, combined with superior crevice corrosion resistance, and excellent resistance under oxidizing to mildly reducing conditions, especially chlorides and hot brines.
Chemical composition of Titanium Grade 12 (%, max.)
Grade
UNS
DIN
O
N
C
H
Fe
Mo
Ni
Gr12
R52250
3.7105
0.25
0.03
0.08
0.015
0.30
0.20-0.40
0.60-0.90
* According to ASTM B265, 348, 338, 861, 862, 863
Classification
UNS
O
N
C
H
Fe
Mo
Ni
ERTi-12
R53401
0.08-0.16
0.015
0.03
0.008
0.15
0.20-0.40
0.60-0.90
* Residual elements total < 0.20%, with single < 0.05%, except for yttrium < 0.005%
Mechanical properties of Titanium Grade 12
Grade
Tensile strength
Yield strength
Elongation in 4D
Reduction of area
Hardness
Gr12
483
345
18
25
170-240
(MPa, min.)
(MPa, min.)
(%, min.)
(%, min.)
(HV)
Available forms
● Ingot
● Forging
● Plate and sheet
● Rod and bar
● Tube and pipe
● Wire
● Fastener
● Custom-made
Specification
ASTM B265, ASTM B348, ASTM B381, ASTM B338, ASTM B861/862, ASTM B863, ASTM B363
AWS A5.16
Typical application
▲ Shell and heat exchangers
▲ Hydrometallurgical applications
▲ Elevated temperature chemical manufacturing
▲ Marine and airfare components
