Titanium Grade 4, Sheet, Coil, Bar, Plate, AMS 4901 (CP Grade 4) - UNS R50700

Sheet

Grade 4 is the strongest of the commercially pure titanium grades, with a minimum yield strength of 480 MPa (70ksi) and has the highest allowable oxygen and iron content of the grades. Grade 4 is commercially pure, also referred to as CP, which means it is unalloyed. Grade 4 titanium features excellent resistance to corrosion and corrosion fatigue as well as high strength.

United Performance Metals stocks coil and sheet sizes 0.012" - 0.080" and plate sizes 0.250" - 0.625". Some of the key applications for this grade include dental and medical implants, airframe and engine components, and chemical processing machinery, 

Inventory Size Ranges for CP Grade 4

Type Thickness AMS Standards ASTM UNS Get a Quote
Coil 0.012" - 0.080" AMS 4901, AMS 4921 ASTM B 265, ASTM B 348, ASTM F 67 UNS R50700 Get a Quote
Sheet 0.012" - 0.080" AMS 4901, AMS 4921 ASTM B 265, ASTM B 348, ASTM F 67 UNS R50700 Get a Quote
Plate 0.250" - 0.625" AMS 4901, AMS 4921 ASTM B 265, ASTM B 348, ASTM F 67 UNS R50700 Get a Quote

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Characteristics of CP Grade 4

CP Grade 4 has the highest strength of the CP grades, making it competitive with stainless steels for many corrosion resistant applications. The corrosion resistance of CP Ti - Grade 4 is based on the presence of a stable, continuous, tightly adherent oxide layer that forms spontaneously upon exposure to oxygen. If damaged, it reforms readily as long as there is some source of oxygen in the environment. Its strength is on a par with annealed stainless steels, and, in addition, it offers lighter weight and superior corrosion resistance. CP Ti, Grade 4 is not subject to grain boundary embrittlement or sensitization at elevated temperatures. 

Working with CP Grade 4

Heat treatments used for CP Ti are annealing and stress relieving. Annealing is used to fully soften the material and remove all residual stresses. Stress relieving is used to remove some or most of the residual stresses from forming, or to recover compressive yield strength after stretching. CP Grade 4 can be hot and cold worked, machined, and welded.

Other industry standards we comply with:

  • ASM/MIL-81200
  • DFARS Compliant

Common Trade Names

  • Grade 4 Titanium
  • Gr. 4 Titanium
  • CP 4 Titanium

Industry Applications for CP Grade 4

  • Jet engine components
  • Aerospace fasteners
  • Marine and chemical processing and desalinization plants
  • Corrosive waste disposal wells
  • Pulp and paper production

Chemical Composition

Chemical Composition Percentage of CP Grade 4 Titanium
Element Min Max
N Nitrogen - 0.05
C Carbon - 0.08
O Oxygen - 0.4
Fe Iron - 0.5
H Hydrogen - 0.015
Ti Titanium - Balance
- Other - 0.4

Physical Properties

Physical Properties of CP Grade 4 Titanium
Physical PropertyT (°F)T (°C)ValueValue (SI)

Density

-

-

0.1630 lb/in³

4.512 g/cm3

Beta Transus

1715-1765

935-963

-

-

Alpha Transus

1635-1685

891-918

-

-

Melting (liquidus) Point

3000-3040

1649-1671

-

-

Specific Heat

73

23(°F)

0.1250 Btu/°F

-

Electrical Resistivity

73

23(°F)

3.93 μΩ∙in

.100 μΩ∙in

Modulus of Elasticity

-

-

15.0 x 10³ ksi

10.3 x 104 MPa

Mechanical Properties

Mechanical Properties of CP Grade 4 Titanium

Room Temperature Mechanical Properties

UTS, ksi (MPa)

YS, ksi (MPa)

%EI

%RA

Specified Properties

80 (550)

70 (480)

15

30

Typical Properties

95-100 (655-690)

70-92 (480-635)

20-25

38-51

Datasheet

cp-grade-4-datasheet.pdf (103.92 KB)

Additional Info