UL 94:1998 pdf download Test for Flammability of Plastic Materials for Parts in Devices and Appliances
1 Scope
1.1 These requirements cover tests for flammability of plastic materials used for parts in devices andappliances. They are intended to serve as a preliminary indication of their acceptability with respect to
flammability for a particular application.
1.2 The methods described in this Standard involve standard size specimens and are intended to be usedsolely to measure and describe the flammability properties of materials, used in devices and appliances, inresponse to heat and flame under controlled laboratory conditions. The actual response to heat and flame ofmaterials depends upon the size and form, and also on the end-use of the product usina the materiaAssessment of other important characteristics in the end-use application includes, but is not limited to, factorssuch as ease of ignition, burning rate, flame spread, fuel contribution, intensity of burning, and products ofcombustion.
1.3 The final acceptance of the material is dependent upon its use in complete equipment that conforms withthe standards applicable to such equipment. The flammability classification required of a material is dependentupon the equipment or device involved and the particular use of the material. The performance level of amaterial determined by these methods shall not be assumed to correlate with its performance in end-useapplication.
*1.3 revised July 10,1998
1.4 If found to be appropriate, the requirements are applied to other nonmetallic materials.1.4 revised June 10, 1997
1.5 These requirements do not cover plastics when used as materials for building construction or finishing.
1.6 A product that contains features, characteristics, components, materials, or systems new or different fromthose covered by the requirements in this Standard, and that involves a risk of fire, electric shock. or injury topersons shal be evaluated using the appropriate additional component and end-product requirements asdetermined necessarv to maintain the acceptable level of satetvy as oricinallv anticipated bv the intent of thisStandard.A product whose features, characteristics, components, materials, or systems conflict with specificrequirements or provisions of this Standard cannot be judged to comply with this Standard. Where consideredappropriate, revision of requirements shall be proposed and adopted in conformance with the methodsemployed for development, revision, and implementation of this Standard.
2 References
21 General
2.1.1 Any undated reference to a code or standard appearing in the requirements of this Standard shall beinterpreted as referring to the latest edition of that code or standard.
2.2 Referenced standards in this text
2.2.1 lf a designation for a test method is followed by an alternate or equivalent designation, in parenthesis.the latter method is considered technically equivalent, though not necessarily identical, and might yieldsomewhat different numerical test results than those obtained with the oriqinal test method.
ASTM D 618, Method for Conditioning Plastics and Electrical lnsulating Materials for Testing (ISO 291: Plastics- Standard Atmospheres for Conditioning and Testing)
ASTM D 789, Test Method for Determination of Relative Viscosity, Melting Point, and Moisture Content ofPolyamide(PA)
ASTM E 162, Test Method for Surface Flammability of Materials Using a Radiant Heat Energy Source
ASTM D 3195, Practice of Rotameter Calibration
ASTM D 5025, Specification for a Laboratory Burner Used for Small-Scale Burning Tests on Plastic Materials
ASTM D 5207. Standard Practice for Calibration of 20 mm and 125 mm Test Flames for Small-Scale BurningTests on Plastic Materials
ASTM E 437, Specification for lndustrial Wire Cloth and Screens (Square Opening Series), Appendix X3
94HB: ASTM D 635. Test Method for Rate of Burning and/or Extent and Time of Burning of Self-SupportingPlastics in a Horizontal Position (lEC 707, Methods of Test for the Determination of the Flammability of SolidElectrical lnsulating Materials When Exposed to an lgniting Source, ISO 1210, Plastics – Determination of theBurning Behavior of Horizontal and Vertical Specimens in Contact with a Small Flame lgnition Source)