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Standard ASTM F136 Ti-6Al-4V ELI for Surgical Implants UNS R56401

Apr 02, 2025

1. Definition of the standard ASTM F136 Ti-6Al-4V ELI (extra low interstitial) alloy (UNS R56401)

 

ASTM F136 is the standard specification for wrought annealed Ti-6Al-4V ELI (extra low interstitial) alloy (UNS R56401) for use in surgical implants.

 

2. Scope

It covers the chemical composition, mechanical properties and metallurgical requirements of wrought annealed Ti-6Al-4V ELI (Extra Low Interstitial) alloy (R56401) used in the manufacture of surgical implants. Products are classified into bars, forged bars and wires.

 

 

3. Chemical Composition

0.05

0.08

0.012

0.25

0.13

5.5-6.50

V

3.5-4.5

 

 

4. Product Analysis  

N

0.02

C

0.02

H

0.0020

0.10

O

0.02

0.40

V

0.15

 

 

4. Mechanical Properties 

Yield strength (0.2%, residual) small

Elongation, 4D or 4W, (%) Small

L

L

0.187
( 4.75mm)

125000
(860)

125000
(860)

10

--

--

--

--

--

0.187~1.75
(4.75~44.45mm)

125000
(860)

115000
(795)

10

--

--

25

--

--

1.75~2.50
(44.45~63.50mm)

120000
(825)

110000
(760)

8

--

--

20

--

--

2.50~4.00
(63.50~101.60mm)

120000
(825)

110000
(760)

8

8

8

15

15

15

0.070( 1.778)

9T

0.070~0.187
(1.778~4.75)

10T

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