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SEMI F8-0998 © SEMI 1992 , 1998 3 11.7 Be gin p ulling the test specime n a t a rate of 2.5 cm (1 in) per m inute. 11.8 Record on test data s heet (see R e la ted Information 1 for a sample), the mi nimum tensile force i…

SEMI F8-0998 © SEMI 1992, 1998 2

6.2.4 submersion tank — A transparent tank filled

with isopropyl alcohol to allow observation of air

leakage from the tube fitting connection.

6.2.5 subject — To expose to.

6.2.6 tensile — Longitudinal, so as to lengthen the test

object.

7 Description of Test Equipment

7.1 A supply of compressed air. Pressure to be within

± 2% of specified.

7.2 Isopropyl alcohol.

7.3 An instrument to record the tensile force applied to

the test specimen.

7.4 A test apparatus:

7.4.1 Capable of securing the test specimen while

allowing the specimen to be internally pressurized.

7.4.2 Capable of accurately providing a uniform rate

of pull to the specimen.

7.4.3 With a transparent submersion tank capable of

containing a fluid for observing leakage. The minimum

fluid level shall be 2.5 cm (1 in) above the test

connection.

7.4.4 The apparatus shall allow the test specimen to be

internally pressurized to 250 kPa (36 psig).

7.5 See Figure 1 for basic tensile and leak test

apparatus.

Figure 1

Basic Tensile and Leak Test Apparatus

8 Safety Precautions

WARNING: This test method will subject test

specimens to conditions that may exceed the

normal performance rating of the products

under evaluation. Adequate precautions must

be taken to prevent injury to the person

conducting the test.

9 Test Specimens and Conditioning

9.1 Sample Size — A minimum of three specimens

shall be tested.

9.2 Specimen Size — The specimen length shall be no

less than 10 cm (4 in) between the upper tensile fixture

and the tube end of the fitting connection.

9.3 Specimen Surface — All surfaces of the specimens

shall be free of visible flaws, scratches, or other

imperfections, unless typically found on a

representative sample of the product.

9.4 Specimen Conditioning — All specimens must be

conditioned for a minimum of one hour in an air

environment of 23° ± 2.8°C (73° ± 5°F) prior to being

subjected to pressure and tensile forces.

10 Calibration

10.1 Calibrate the tensile test equipment’s rate of pull

to 2.5 cm (1 in) per minute, ± 5%.

10.2 Calibrate the tensile force instrument to ± 2% full

scale.

11 Test Procedure

11.1 Assemble a test fitting connection, per

manufacturer’s specification, to one end of the tube.

11.2 Install the fitting connection to the tensile fixture,

in the submersion tank (see Figure 1) in a manner that

prevents distortion of the connection.

11.3 Secure free end of tube to the upper tensile

fixture, leaving a minimum of 10 cm (4 in) of exposed

tube.

11.4 Fill the submersion tank with isopropyl alcohol to

a height of 2.5 cm (1 in) above the top of the test

connection.

11.5 Cover the submersion tank in case of a fluid

splash.

11.5.1 The cover must allow for slight clearance

around tube.

11.6 Pressurize the test specimen with an internal air

pressure of 250 kPa (36 psig), regardless of tube size.

SEMI F8-0998 © SEMI 1992, 19983

11.7 Begin pulling the test specimen at a rate of 2.5

cm (1 in) per minute.

11.8 Record on test data sheet (see Related

Information 1 for a sample), the minimum tensile force

in Newtons (lbs) when leakage is first observed from

the fitting connection.

11.9 Lower the air pressure to one atmosphere

immediately after observing any leakage.

11.10 Continue pulling until the tube pulls through the

fitting connection or until tearing of the tube occurs.

11.10.1 If the tube releases from the tensile fixture, the

data from that specimen must be disregarded and an

additional specimen tested.

11.11 Record on test data sheet the mode of failure

and the maximum tensile force applied in Newtons

(lbs).

11.11.1 It is possible that the tensile force required to

cause leakage and the maximum tensile force may be

the same. If this situation occurs, indicate the force

reading on both areas of the test data sheet.

12 Calculations

12.1 Calculate the average “force to cause leakage”

and record.

12.2 Calculate the average “maximum tensile force”

and record.

12.3 Using the three actual forces:

12.3.1 Calculate the standard deviation of “force to

cause leakage” and record.

12.3.2 Calculate the standard deviation of “maximum

tensile force” and record.

13 Data Accuracy

13.1 Tensile Force — Newtons: ± 2%

14 Test Data Sheet

The test data sheet shall include the following

information:

14.1 Date tested.

14.2 Operator and test facility.

14.3 Description of items tested, including:

Tubing — manufacturer, O.D., wall thickness, part

number, and material type.

Fitting — manufacturer, type, size, part number, and

material type.

14.4 Force to cause leakage for each specimen.

14.5 Average and standard deviation of the forces to

cause leakage.

14.6 Maximum tensile force for each specimen.

14.7 Average and standard deviation of maximum

tensile forces.

14.8 Mode of failure for each specimen.

NOTE: A sample test data sheet is provided as Related

Information 1.

NOTICE: These standards do not purport to address

safety issues, if any, associated with their use. It is the

responsibility of the user of these standards to establish

appropriate safety and health practices and determine

the applicability of regulatory limitations prior to use.

SEMI makes no warranties or representations as to the

suitability of the standards set forth herein for any

particular application. The determination of the

suitability of the standard is solely the responsibility of

the user. Users are cautioned to refer to manufacturer’s

instructions, product labels, product data sheets, and

other relevant literature respecting any materials

mentioned herein. These standards are subject to

change without notice.

The user’s attention is called to the possibility that

compliance with this standard may require use of

copyrighted material or of an invention covered by

patent rights. By publication of this standard, SEMI

takes no position respecting the validity of any patent

rights or copyrights asserted in connection with any

item mentioned in this standard. Users of this standard

are expressly advised that determination of any such

patent rights or copyrights, and the risk of infringement

of such rights, are entirely their own responsibility.

RELATED INFORMATION 1

SAMPLE TEST DATA SHEET

NOTE: This related information is not an official part of SEMI F8 and is not intended to modify or supercede the offical test

method. It has been derived from industry specifications. Publication was authorized by full letter ballot procedure.

Determination of the suitability of the material is solely the responsibility of the user.

Test Date: Operator: Test Facility:

Tube Manufacturer: Fitting Manufacturer:

Tube O.D.: Fitting Type:

Tube Wall Thickness: Fitting Size:

Tube P/N: Fitting P/N:

Tube Material: Fitting Material:

Tensile Force — Newtons

Specimen Force to Cause Leakage Maximum Tensile Force Mode of Failure

Average =

Standard Deviation =

NOTICE: These standards do not purport to address safety issues, if any, associated with their use. It is the

responsibility of the user of these standards to establish appropriate safety and health practices and determine the

applicability of regulatory limitations prior to use. SEMI makes no warranties or representations as to the suitability

of the standards set forth herein for any particular application. The determination of the suitability of the standard is

solely the responsibility of the user. Users are cautioned to refer to manufacturer’s instructions, product labels,

product data sheets, and other relevant literature respecting any materials mentioned herein. These standards are

subject to change without notice.

The user’s attention is called to the possibility that compliance with this standard may require use of copyrighted

material or of an invention covered by patent rights. By publication of this standard, SEMI takes no position

respecting the validity of any patent rights or copyrights asserted in connection with any item mentioned in this

standard. Users of this standard are expressly advised that determination of any such patent rights or copyrights, and

the risk of infringement of such rights, are entirely their own responsibility.

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the contents in whole or in part is forbidden without express written

consent of SEMI.