Titanium Grade 1 (UNS R50250)

  • It is the softest grade among the other titanium grades.
  • It is flexible and high impact strength.
  • It has high corrosion resistance.
  • It has great weldability and formability.
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Of the four Commercially Pure Titanium, grade 1 titanium is the purest form of it.

As a result, it is the softest metal out of the bunch. It compensated for its softness in terms of its rich resistance to corrosion and its capacity to endure high impacts.

Thanks to its formability and high weldability nature, titanium grade 1 is used in a wide variety of industries, including chemical processing, desalination, marine industry, architecture, airframe structures, medical industries, and automobile parts.

Common names:

  • Ti35A
  • TA1 (GR.1)
  • Unalloyed CP Titanium
  • UNS R50250
  • W.Nr. 3.7025
  • AWS 150
  • Commercially Pure Titanium Grade 1

Chemical properties:

  • Titanium (%): 91.49
  • Iron (%): 0.20
  • Oxygen (%):  0.18
  • Carbon (%) : 0.05
  • Nitrogen (%): 0.03
  • Hydrogen (%): 0.015

Mechanical properties:

  • Tensile (MPA): 350
  • Tensile (PSI): 50000
  • Yield (MPA): 220
  • Yield (PSI): 31900
  • Hardness: 115
  • Elongation (%): 35%

Physical properties:

  • Density: 0.163(Lb/In3) / 4.51(G/CM3)
  • Specific Heat: 0.125(Btu/Ib.oF) / 520(J/Kg.oC)
  • Expansion Coefficient: 5.4(70-212 oF) / 9.7(20-100 oC)
  • Electrical Resistivity: 21(Ohm.circ mil/ft) /0.53 (Ω⋅m)
  • Thermal Conductivity: 12.6(Btu.in/ft2.h. oF) / 21.7(W/m.oC)
  • Melting Point: 1670°C (3040°F)

Executive standards (coil and wire):

  • ASTM B265 GR1
  • ASTM F67
  • ASTM B348
  • ASM 4940
  • UNS R50250

Product forms available of grade 1 titanium:

  • Bars such as Hexagon bar, round bar, square bar,
  • Wire such as round wire, flat wire
  • Forging such as ring, block, flange, block, cap, disk, disc, target,
  • Tube
  • Plate
  • Fittings
  • Machine parts

Key features:

  • Strength: The strength of titanium is said to be twice as much as carbon, and it is equal to three times the strength of aluminum.
  • Lightweight: Titanium is 40% lighter than stainless steam or low carbon steel, but still, it is much stronger than them.
  • Corrosion resistance: Titanium is one of the best metals to use in saltwater or seawater. As it is best suited for such conditions and experiences close to no corrosion.
  • No oxidization: As it does not get eroded so easily, the outer layer stays in pristine condition all the time. Hence, it eliminates the hassle of its maintenance.

Possible alternative grades:

  • Titanium alloy Grade 2: This is a slightly upgraded version of the grade 1 titanium. It has all the properties of grade 1 with improvements in its toughness.
  • Titanium alloy Grade 3: This grade is tougher than its previous grades. It is the least used of the four pure titanium metal. It is due to its less formable nature.
  • Titanium alloy Grade 4: This finds its use in the medical field in recent times. As it is one the strongest of the pure form of titanium and experiences no corrosion, it fits perfectly for that use.


  • Is Titanium Grade 1 prone to oxidation?

No, thanks to its highly corrosion-resistant nature, it does not experience oxidization under any circumstances.

  • Is Titanium a better metal than Tungsten?

It all depends on the place of use of each metal. While titanium is strong and corrosion-resistant, tungsten is scratch resistant and a bit less on the cost side. So it all boils down to the application of the metal.

  • What are the commercial grades of titanium?

Pure titanium comes in 4 grades, each with its use and advantages.

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