ASTM D757-77 PDF

Scope: 1.1 This method provides for laboratory comparisons of the resistance of rigid plastics to an incandescent surface at 950 * 10°C (1742 * l 8 O F ) . It may supplement tests using a flame source of ignition, such as Method D 635. 1.2 Caution-During the course of combustion, gases or vapors, or both, are evolved which may be hazardous to personnel. Adequate precautions should be taken to protect the operator. NOTE 1-For a test on the burning rate of plastics in the form of thin sheets, reference should be made to Method D 568, Test for Rate of Burningand/or Extent and Timeof Burning of Flexible Plastics in a Vertical Position.zThe buming rate of sheet and plate insulation is covered in Methods D 229, Testing Sheet and Plate Materials Used for Electrical Insulation.z NOTE 2-The burning rate of plastic foams in a horizontal position mounted on a metal mesh screen can be determined by Method D 1692, Test for Rate of Burning and/or Extent and Time of Burning of Cellular Plastics Using a Specimen Supported by a Horizontal Screen.* 1.3 This standard should be used to measure and describe the properties of materials, products, or systems in response to heat and flame under controlled laboratory conditions ,vtd should not be used for the descriution or appraisal of the fire hazard of materials, products, or systems under actual fire conditions.3 NOTE>The values stated in SI units are to be regarded as the standard.

ASTM D757-77 Referenced Document

ASTM D618 Standard Practice for Conditioning Plastics for Testing*， 2021-07-15 Update
ASTM D635 Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position*， 1998-04-21 Update

1977 ASTM D757-77 Standard test method for determination of pyrolysis solids content in pyrolysis liquids by methanol solids filtration method