NT-7/8-0-SP (5550064009) - Tyco Electronics

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Tyco Electronics Corporation

300 Constitution Drive

Menlo Park, CA 94025 USA

Specification

This Issue:

Date:

Replaces:

RT-510

Issue 11

Nov. 30, 2005

Issue 10

Raychem NT Tubing

Modified Chlorinated Polyolefin, Elastomeric, Flexible, Flame Retardant, 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 referenced 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

SAE-AMS-1424 Anti-Icing and Deicing - Defrosting Fluid

MIL-DTL-83133 Turbine Fuels, Aviation, Kerosene Types, NATO F-34 (JP-8),

NATO F-35 and JP-8 + 100

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

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

NATO Code Number 0-148

2.2 Other Publications

American Society for Testing and Materials (ASTM)

ASTM D412 Standard Test Methods for Rubber Properties in Tension

ASTM D910 Standard Spec. for Aviation Gasolines

ASTM D2240 Standard Method of Test for Indentation Hardness of Rubber and Plastics by Means of a

Durometer

ASTM D2671 Standard Methods of Testing Heat-Shrinkable Tubing for Electrical Use

ISO 846 Plastics – Evaluation of the Action of Microorganisms

(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 Chlorinated Polyolefin 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.

Page 2 SPECIFICATION RT-510 ISSUE 11

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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.

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

Flammability

Low Temperature Flexibility

Physical property tests performed at this time qualify subsequent sleeving lots produced from the same

batch of compound. Statistical process control data may be used to demonstrate conformance for

dimensions.

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 4

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. 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 61 m) per

minute. Tubing shall be allowed to cool to room temperature prior to testing. The Heat Shrinkable

Sleeving and Measurement Gages shall be at room temperature with ambient relative humidity prior to

testing before or after heat shrinking.

SPECIFICATION RT-510 ISSUE 11 Page 3

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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 D2671, conditioned for 10 minutes in a

175 ± 5°C (347 ± 9°F) oven, cooled to 23 ± 3°C (73 ± 5°F) and then re-measured. 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]

L

0 = Length Before Conditioning [inches (mm)]

L

1 = Length After Conditioning [inches (mm)]

4.3.2 Tensile Strength, Tensile Stress and Ultimate Elongation

Test three specimens of tubing for tensile strength and ultimate elongation in accordance with

ASTM D2671 and for tensile stress in accordance with ASTM D412.

The rate of jaw separation shall be 20 ± 2 inches (500 ± 50 mm) per minute.

4.3.3 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 ± 2°C (250 ± 4°F) oven. After

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

mandrels shall then be removed from the tubing, then 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 Ultimate Elongation in accordance with 4.3.2.

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 d efect 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 be

less than 125 pound-test fiberboard.

5.2 MARKING

Each container of tub ing shall be permanently and legibly marked with the size, quantity, manufacturer's

identification and lot number.

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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 0.89

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 43.43 .105 2.65 .145 3.67 .125 3.17

4 4.000 101.60 2.280 58.90 .120 3.04 .160 4.05 .140 3.55

TABLE 2

Mandrel Dimensions for Bend Testing

Tubing Size Mandrel Diameter

in. in.

mm.

1/8 through 3/16 5/16 7.9

1/4 through 3/8 3/8 9.5

1/2 through 1-3/4 7/16 11.1

2 through 3 7/8 22.2

4 1.0 25.4

SPECIFICATION RT-510 ISSUE 11 Page 5

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TABLE 3

Requirements

PROPERTY UNIT REQUIREMENT TEST METHOD

PHYSICAL

Dimensions

inches (mm))

In accordance with table 1

ASTM D 2671

Longitudinal Change percent +1, -10 Section 4.3.1

Tensile Strength psi (MPa) 1500 (10.3) minimum

Section 4.3.2

ASTM D 2671

Ultimate elongation percent 225 minimum ASTM D2671

Tensile Stress at 100% elongation psi (MPa) 1500 (10.3) maximum ASTM D 412

Specific Gravity --- 1.5 maximum ASTM D 2671

Low Temperature Flexibility

4 hours at -70°C ± 2°C (-94°± 4° F) --- No cracks ASTM D 2671

Procedure C

Table 2

Heat Shock

4 hours at 200°C± 3°C (392°± 5° F) --- No cracks, flowing

or dripping ASTM D 2671

Table 2

Heat Resistance

168 hours at

121°C ± 2°C (250 ± 4°F)

Followed by tests for:

---

ASTM D 2671

Tensile strength psi (MPa)

1200 (8.3)

Section 4.3.2

ASTM D 2671

Ultimate elongation percent 175 minimum ASTM D 2671

ELECTRICAL

Dielectric Strength

volts/mil (kV/mm)

300 minimum (11.8 )

ASTM D 2671

Volume Resistivity ohm-cm 1011 minimum ASTM D 2671

CHEMICAL

Copper Mirror Corrosion

16 hours at 150°± 2°C (302°± 4° F)

---

Noncorrosive

ASTM D 2671

Procedure A

Copper Contact Corrosion

16 hours at 150 ± 2°C (302°± 4° F) No pitting or black ening

of copper ASTM D 2671

Procedure B

Copper Stability

168 hours at 121°± 2°C (250°± 4° F)

Followed by test for:

---

No brittleness, glazing,

cracking, or severe

discoloration of tubing

Section 4.3.3

Ultimate Elongation percent 175 minimum 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/mil (kV/mm)

---

1500 (10.3) minimum

225 minimum

300 (11.8) minimum

ISO 846

Method B

Section 4.3.2

ASTM D 2671

Water Absorption

24 hours at 23°± 2°C (73° ± 4°F) Percent 1.0 maximum ASTM D 2671

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TABLE 3

Requirements

(continued)

PROPERTY UNIT REQUIREMENTS TEST METHOD

CHEMICAL (continued)

Fluid Resistance

24 hours at 23°± 2°C (73° ± 4° F)

JP-8 Fuel (MIL-DTL-83133)

Hydraulic Fluid (MIL-PRF-5606)

Skydrol* 500

Aviation Gasoline (ASTM D910)

Lubricating Oil (MIL-PRF-7808)

De-Icing Fluid ( SAE-AMS-1424)

Water

Followed by tests for:

---

ASTM D 2671

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

ASTM D 2671

Dielectric Strength volts/mil (kV/mm) 250 (9.8) minimum ASTM D 2671

______________________

* Solutia, Inc.