PROPRIETARY ATI 38-644 Titanium Alloys

Material group: Nonferrous Alloys / Titanium Alloys
Country / Standard: PROPRIETARY

Data updates

Latest Update: 2025-09
Total number of updates: 3
Update History
2022-12 2016-11

This material has 4408 properties — only a subset is shown here.

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PROPRIETARY ATI 38-644 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Al
VALUE
3.0 – 4.0
UNIT
%
CAS NUMBER
7429-90-5
CRITERIA
C
VALUE
≤ 0.05
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cr
VALUE
5.5 – 6.5
UNIT
%
CAS NUMBER
7440-47-3
CRITERIA
Fe
VALUE
val1
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UNIT
%
CAS NUMBER
7439-89-6
CRITERIA
H
VALUE
val1
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UNIT
%
CAS NUMBER
1333-74-0
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
N
VALUE
val1
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UNIT
%
CAS NUMBER
7727-37-9; 17778-88-0
CRITERIA
O
VALUE
val1
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UNIT
%
CAS NUMBER
7782-44-7; 17778-80-2
CRITERIA
Ti
VALUE
val1
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UNIT
%
CAS NUMBER
7440-32-6
CRITERIA
V
VALUE
val1
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UNIT
%
CAS NUMBER
7440-62-2
CRITERIA
Zr
VALUE
val1
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UNIT
%
CAS NUMBER
7440-67-7

Allegheny Technologies Incorporated, Product Data Sheets,

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PROPRIETARY ATI 38-644 Physical Properties

Temperature

PROPERTY / VALUE
Modulus of Elasticity
80 — 130 GPa
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Density
val1
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kg/dm³
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Heat Capacity
val1
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J/(kg∙°C)
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Melting Temperature
val1
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°C
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This material has 4408 properties — only a subset is shown here.

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PROPRIETARY ATI 38-644 Heat Treatments

  • For high-strength applications, heat treating usually consists of solution annealing followed by aging during final production manufacturing. Cold drawing prior to aging will increase strength, while good ductility is still retained. Solution annealing should be performed at least 28°C (50°F) above the transus temperature, preferably in the range of 788- 927°C (1450-1700°F), and product may be air cooled or water quenched. Aging is achieved at temperatures of 454-538°C (850-1000°F) for 4 to 24 hours with air cooling. Specific aging time and temperature may be varied to achieve a desired strength level.

PROPRIETARY ATI 38-644 Mechanical Properties

Temperature

PROPERTY / VALUE
Tensile Strength
1203.4 — 1729.6 MPa
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Brinell Hardness (HB)
val1
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Elongation, A
val1
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%
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Reduction of Area
val1
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%
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Yield Strength, Rp0.2
val1
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MPa
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PROPRIETARY ATI 38-644 International Equivalent Materials

Showing 15 of 30 results.

MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
Ti-3Al-8V-6Cr-4Mo-4Zr
STANDARD
SAE
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
F 467 Grade 19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
B 861 Grade 19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
B 381 Grade F-18
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
B 381 Grade F-19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SB-348 Grade 19
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SB-265 Grade 19
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SB-861 Grade 19
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
SB-862 Grade 19
STANDARD
ASME
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
B 862 Grade 19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
B 863 Grade 19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
F 468FT Grade 19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
B 265 Grade 19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
B 348 Grade 19
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Implicit
MATERIAL
Titanium Beta C
STANDARD
Generic
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
Implicit

Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.

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  • 30Cross References
  • 11Composition
  • 58Mechanical Properties
  • 12Physical Properties
  • 1Heat Treatment
  • -Metallography
  • -Machinability
  • 7Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep
  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology
  • 4283Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation
  • 6Total Suppliers