5147664002 - Tyco Electronics - Datasheet.Directory

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Tyco Electronics Corporation

300 Constitutional Drive

Menlo Park, CA 94025 USA

Specification

This Issue:

Date:

Replaces:

RT-511

Issue 7

January 25, 2010

Issue 6

THERMOFIT® NT-FR TUBING

Neoprene, Fluid Resistant, Flexible, Heat-Shrinkable

1.0 SCOPE

This specification covers the requirements for one type of highly flexible, electrically

insulating, extruded tubing whose diameter will reduce to a predetermined size upon the

application of heat in excess of 135°C (275°F).

2.0 APPLICABLE DOCUMENTS

This specification takes precedence over documents references herein. Unless otherwise

specified, the latest issue of referenced documents applies. The following documents

form a part of this specification to the extent specified herein.

2.1 GOVERNMENT-FURNISHED DOCUMENTS

Military

MIL-H-5606 Hydraulic Fluid, Petroleum Base, Aircraft, Missile, and Ordnance

MIL-L-7808 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base

MIL-A-8243 Anti-Icing and Deicing - Defrosting Fluid

MIL-L-23699 Lubricating Oil, Aircraft Turbine Engines, Synthetic Base

MIL-F-46162 Fuel, Diesel, Referee Grade

MIL-H-46170 Hydraulic Fluid, Rust Inhibited, Fire-Resistant, Synthetic

Hydrocarbon Base

SAE-MIL-DTL-81333 Turbine Fuels, Aviation, Kerosene Types, NATO F-34 (JP-8),

NATO F-35, and JP8+100

Federal

A-A-694 Sodium Chloride, Technical

P-C-437 Cleaning Compound, High Pressure (Steam) Cleaner

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2.2 OTHER PUBLICATIONS

American Society for Testing and Materials (ASTM)

D 257 Standard Test Methods for d-c Resistance or Conductance of Insulating

Materials

D 412 Standard Test Methods for Rubber Properties in Tension

D 2240 Standard Test Method of Rubber Property - Durometer Hardness

D 2671 Standard Methods of Testing Heat-Shrinkable Tubing for Electrical Use

G 21 Standard Recommended Practice for Determining Resistance of Synthetic

Polymeric Materials to Fungi

(Copies of ASTM publications may be obtained from the American Society for Testing

and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103).

3.0 REQUIREMENTS

3.1 MATERIAL

The tubing shall be fabricated from a stabilized, flame resistant, modified neoprene and

shall be radiation crosslinked. It shall be homogeneous and essentially free from flaws,

defects, pinholes, bubbles, seams, cracks, and inclusions.

3.2 COLOR

The tubing shall be black.

3.3 PROPERTIES

The tubing shall meet the requirements of Table 3.

4.0 QUALITY ASSURANCE PROVISIONS

4.1 CLASSIFICATION OF TESTS

4.1.1 Qualification Tests

Qualification tests are those performed on tubing submitted for qualification as a

satisfactory product and shall consist of all tests listed in this specification.

SPECIFICATION RT-511 ISSUE 7 Page 3

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4.1.2 Acceptance Tests

Acceptance tests are those performed on tubing submitted for acceptance under contract.

Acceptance tests shall consist of the following:

Dimensions

Longitudinal Change

Tensile Strength

Tensile Stress

Ultimate Elongation

Heat Shock

Hardness

Flammability

Low Temperature Flexibility

4.2 SAMPLING INSTRUCTIONS

4.2.1 Qualification Test Samples

Qualification test samples shall consist of 50 feet (15 m) of tubing of each size.

Qualification of any size within each size range specified below will qualify all sizes in

the same range.

Size Range

1/8 through 7/8

1 through 3

4.2.2 Acceptance Test Samples

Acceptance test samples shall consist of not less than 16 feet (5 m) of tubing selected at

random from each lot. A lot shall consist of all tubing of the same size, from the same

production run, and offered for inspection at the same time.

4.3 TEST PROCEDURES

Unless otherwise specified, tests shall be performed on specimens which have been fully

recovered by conditioning for 10 minutes in a 175 ± 5°C (347 ± 9°F) oven. Prior to all

testing, the test specimens (and measurement gauges, when applicable) shall be

conditioned for 3 hours at 23 ± 3°C (73 ± 5°F ) and 50 ± 5 percent relative humidity. All

ovens shall be of the mechanical convection type in which air passes over the specimens

at a velocity of 100 to 200 feet (30 to 60 m) per minute.

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4.3.1 Dimensions and Longitudinal Change

Three 6-inch (150 mm) specimens of tubing, as supplied, shall be measured for length ±

1/32 inch (± 1 mm) and inside diameter in accordance with ASTM D 2671, conditioned

for 10 minutes in a 175 ± 5°C (347 ± 9°F) oven, cooled to 23 ± 3°C (73 ± 5°F), and then

remeasured. Prior to and after conditioning, the dimensions of the tubing shall be in

accordance with Table 1 and the longitudinal change shall be in accordance with Table 3.

Longitudinal change shall be calculated as follows:

C = L1 - L0

L0 x 100

Where: C = Longitudinal Change [Percent]

0 = Length Before Conditioning [Inches (mm)]

1 = Length After Conditioning [Inches (mm)]

4.3.2 Tensile Strength, Tensile Stress, and Ultimate Elongation

Three specimens of tubing shall be tested for tensile strength, tensile stress, and ultimate

elongation in accordance with ASTM D 2671. For tubing sizes 3/8 and smaller, the

specimens shall be full sections of tubing. For sizes 1/2 and larger, the specimens shall

be 1/4-inch (6.3-mm) wide strips. The specimens shall have 1-inch (25-mm) bench

marks, centrally located. The testing machine shall have an initial jaw separation of 1

inch (25 mm) for full sections of tubing , and 2 inches (51 mm) for strip specimens. The

rate of jaw separation shall be 20 ± 2 inches

(500 ± 50 mm) per minute.

4.3.3 Low Temperature Flexibility

Three specimens, each 12 inches (300 mm) in length, and a mandrel selected in

accordance with Table 2, shall be conditioned at -70 ± 3°C (-94 ± 5°F) for 4 hours. For

tubing sizes 5/8 or less, the specimens shall be whole sections of tubing recovered on a

stranded wire (nearest AWG which is larger than the sleeving maximum inside diameter

after unrestricted shrinkage). For tubing sizes larger than 5/8, the specimens shall be 1/4-

inch (6.3-mm)wide strips cut from tubing which has been recovered in accordance with

4.3. After 4 hours conditioning, and while still at the conditioning temperature, the

specimens shall be wrapped around the mandrel for not less than 360° (6.28 rad) in 10 ±

2 seconds. The specimens then shall be visually examined for evidence of cracking.

SPECIFICATION RT-511 ISSUE 7 Page 5

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4.3.4 Heat Shock

Three 6-inch (150-mm) specimens of tubing shall be conditioned for 4 hours in a 200 ±

3°C (392 ± 5°F) oven. After conditioning, the specimens shall be removed form the

oven, cooled to room temperature, and visually examined for evidence of dripping,

flowing, or cracking.

4.3.5 Heat Resistance

Three specimens of tubing prepared and measured in accordance with 4.3.2, shall be

conditioned for 168 hours in a 121 ± 3°C (250 ± 5°F) oven. After conditioning, the

specimens shall be removed from the oven, cooled to 23± 3°C (73 ± 5°F), and tested for

tensile strength and ultimate elongation in accordance with 4.3.2.

4.3.6 Copper Stability

Three 6-inch (150-mm) specimens of tubing shall be slid over snug fitting, straight, clean,

bare copper mandrels, either solid or tubular. The specimens on the mandrels shall be

conditioned for 24 hours in a desiccator or similar humidity chamber at 90 to 95 percent

relative humidity and 25 ± 3°C (77 ± 5°F). The specimens on the mandrels then shall be

conditioned for 168 hours in a 121 ± 3°C (250 ± 5°F) oven. After conditioning, the

specimens shall be removed form the oven, cooled to 23 ± 3°C (73 ± 5°F). The copper

mandrels shall then be removed form the tubing and the tubing and copper mandrels shall

be examined. Darkening of the copper due to normal air oxidation shall not be cause for

rejection. The tubing shall be tested for elongation in accordance with 4.3.2.

4.3.7 Dielectric Strength

The dielectric strength shall be determined in accordance with the ASTM D 2671

procedure for dielectric breakdown. When dielectric breakdown occurs, the thickness

measurements for calculating dielectric strength shall be made adjacent to the point of

breakdown and the dielectric strength shall be calculated in volts per mil.

4.3.8 Corrosive Effect

The tubing shall be tested for copper mirror corrosion in accordance with ASTM D 2671,

Method A. The specimens shall be conditioned for 16 hours at 150 ± 3°C (302 ± 5°F).

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4.3.9 Fluid Resistance

Six specimens, three 6-inch tubing specimens and three tensile specimens prepared and

measured in accordance with 4.3.2, shall be immersed for 24 hours in each of the test

fluids listed in Table 3 at the temperature specified. The volume of the fluid shall not be

less than 20 times that of the specimens. After conditioning, all the specimens shall be

lightly wiped and air dried for 30 to 60 minutes at 23 ± 3°C (73 ± 5°). The three

specimens intended for the tensile strength and elongation tests shall then be tested in

accordance with 4.3.2. The other three specimens shall be weighed before and after

immersion and the weight change calculated as a percentage.

4.4 REJECTION AND RETEST

Failure of any sample of tubing to comply with any one of the requirements of this

specification shall be cause for rejection of the lot represented. Tubing which has been

rejected may be replaced or reworked to correct the defect and then resubmitted for

acceptance. Before resubmitting, full particulars concerning the rejection and the action

taken to correct the defect shall be furnished to the inspector.

5.0 PREPARATION FOR DELIVERY

5.1 PACKAGING

Packaging shall be in accordance with good commercial practice. The shipping container

shall be not less than 125 pound-test fiberboard.

5.2 MARKING

Each container of tubing shall be permanently and legibly marked with the size, quantity,

manufacturer's identification, and lot number.

SPECIFICATION RT-511 ISSUE 7 Page 7

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TABLE 1

Tubing Dimensions

AS SUPPLIED RECOVERED

Inside Diameter Inside Diameter Wall Thickness

Size Minimum Maximum Minimum Maximum Nominal

in.

mm. in. mm. in. mm. in. mm. in. mm.

1/8 .125 3.18 .061 1.55 .019 0.48 .035 0.91 .027 0.69

3/16 .187 4.75 .100 2.54 .023 0.58 .043 1.09 .033 0.83

1/4 .250 6.35 .143 3.63 .025 0.63 .045 1.14 .035 0.88

3/8 .375 9.52 .214 5.45 .030 0.76 .050 1.27 .040 1.01

1/2 .500 12.70 .286 7.25 .033 0.83 .063 1.60 .048 1.21

5/8 .625 15.87 .357 9.06 .037 0.93 .067 1.70 .052 1.32

3/4 .750 19.05 .428 10.88 .042 1.06 .072 1.82 .057 1.44

7/8 .875 22.22 .500 12.70 .050 1.27 .080 2.03 .065 1.65

1 1.000 25.40 .570 14.48 .050 1.27 .090 2.28 .070 1.77

1-1/4 1.250 31.75 .714 18.13 .067 1.70 .107 2.71 .087 2.20

1-1/2 1.500 38.10 .857 21.76 .075 1.90 .115 2.92 .095 2.41

1-3/4 1.750 44.45 1.000 25.40 .087 2.20 .127 3.22 .107 2.71

2 2.000 50.80 1.140 28.96 .090 2.28 .130 3.30 .110 2.79

3 3.000 76.20 1.710 43.54 .105 2.65 .145 3.67 .125 3.18

TABLE 2

Mandrel Dimensions for Bend Testing

Tubing Size Mandrel Diameter

in.

mm.

1/8 through 1/2 3/8 9.5

5/8 through 1 5/8 15.9

1-1/4 through 2 7/8 22.2

3 1-1/8 28.6

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TABLE 3

Requirements

PROPERTY UNIT REQUIREMENT TEST METHOD

PHYSICAL

Dimensions

Inches (mm)

In accordance with Table 1

Section 4.3.1

Longitudinal Change Percent +1, -8 ASTM D 2671

Tensile Strength psi (MPa) 1500 minimum (10.3)

Tensile Stress

at 100 percent elongation psi (MPa) 1500 maximum(10.3) Section 4.3.2

ASTM D 2671

Ultimate Elongation Percent 250 minimum

Specific Gravity --- 1.5 maximum ASTM D 2671

Hardness Shore A 80 ± 5 ASTM D 2240

Low Temperature Flexibility

4 hours at -70 ± 3°C (-94 ± 5°F) --- No cracking Section 4.3.3

Heat Shock

4 hours at 200 ± 3°C (392 ± 5°F) --- No dripping, flowing or cracking Section 4.3.4

Heat Resistance (Aging)

168 hours at 121 ± 3°C (250 ± 5°F)

Followed by tests for:

--- --- Section 4.3.5

Tensile Strength psi (MPa) 1200 minimum (8.3) Section 4.3.2

Ultimate Elongation Percent 175 minimum ASTM D 2671

Copper Stability

168 hours at 121 ± 3°C (250 ± 5°F)

Followed by test for:

--- No brittleness, glazing or

cracking of tubing; no pitting or

blackening of copper.

Section 4.3.6

Ultimate Elongation Percent 175 minimum Section 4.3.2

ELECTRICAL

Dielectric Strength

Volts/mil

(Volts/mm)

300 minimum (11,800)

Section 4.3.7

ASTM D 2671

Volume Resistivity ohm-cm 1011 minimum ASTM D 257

CHEMICAL

Corrosive Effect

16 hours at 150 ± 3°C (302°± 5°F)

---

Noncorrosive

Section 4.3.8

ASTM D 2671

Flammability Seconds Self-extinguishing within 15

seconds ASTM D 2671

Procedure A

Fungus Resistance

Followed by tests for:

Tensile Strength

Ultimate Elongation

Dielectric Strength

psi (Mpa)

percent

Volts per mil

(volts per mm)

1500 minimum (10.3)

250 minimum

300 minimum (11,800)

ISO 846 Method B

Section 4.3.2

ASTM D 2671

SPECIFICATION RT-511 ISSUE 7 Page 9

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TABLE 3

Requirements

(continued)

PROPERTY UNIT REQUIREMENT TEST METHOD

CHEMICAL (continued)

Fluid Resistance

24 hours at 25 ± 3°C (77 ± 5°F)

Hydraulic Fluid (MIL-H-5606)

Lubricating Oil (MIL-L-23699)

Hydraulic Fluid (MIL-H-46170)

Isopropyl Alcohol

De-Icing Fluid (MIL-A-8243)

Water

Cleaning Fluid (P-C-437)

Followed by tests for:

---

Section 4.3.9

Tensile Strength psi (MPa) 1000 minimum (6.9) Section 4.3.2

Ultimate Elongation Percent 250 minimum

Weight Increase Percent 5 maximum Section 4.3.9

Fluid Resistance

24 hours at 25 ± 3°C (77 ± 5°F) in:

JP-8 Fuel (MIL-T-83133)

Aviation Gasoline 100/130

(MIL-G-5572)

Lubricating Oil (MIL-L-7808)

Diesel Fuel (MIL-F-46162)

Followed by tests for:

--- --- Section 4.3.9

Tensile Strength psi (MPa) 1000 minimum (6.9) Section 4.3.2

Ultimate Elongation Percent 250 minimum

Weight Increase Percent 20 maximum Section 4.3.9

Fluid Resistance

24 hours at 71 ± 3°C (160 ± 5°F) in:

Hydraulic Fluid (MIL-H-46170)

Followed by tests for:

--- --- Section 4.3.9

Tensile Strength psi (MPa) 1000 minimum (6.9) Section 4.3.2

Ultimate Elongation Percent 250 minimum

Weight Increase Percent 1/8 through 7/8: 20 maximum

1 through 3: 15 maximum Section 4.3.9