What is ASTM D638 standard?
ASTM D638 specifies methods for testing the tensile strength of plastics and other resin materials and for calculating their mechanical properties, and outlines accuracy requirements for the test frames and accessories used. This test method uses dumbbell-shaped specimens with either a 25 mm or 50 mm gauge length.
Which ASTM standard is used to find out tensile properties of metals?
ASTM E8 / E8M is one of the most common test methods for determining the tensile properties of metallic materials, with the other being ASTM A370. These tests are performed on a variety of sample types, including cast iron bars, metal wire, specialty metals, tubes, and welded samples.
What is ASTM D3039?
ASTM D3039 is a widely-used testing standard for determining the tensile properties of composite materials. Due to their lightweight properties and high tensile strength, composite materials are increasingly favored by the aerospace and automotive industries, and are being used to replace metals in many applications.
What are the 5 types of standards recognized by ASTM?
ASTM stands for the American Society for Testing and Materials and has created six types of standards that relate to manufacturing processes such as testing, materials classification and operation. The six types are test method, specification, classification, practice, guide and terminology standards.
What is ASTM D790?
ASTM D790 is a testing method to determine the flexural (bending) properties of reinforced and unreinforced plastics, high-modulus composites, and electrical insulation materials.
What is ASTM D696?
ASTM D696 – 16 Standard Test Method for Coefficient of Linear Thermal Expansion of Plastics Between −30°C and 30°C with a Vitreous Silica Dilatometer.
What is ASTM standard for the tensile strength?
Standard. ASTM E8 / E8M is one of the most common test method for determining the tensile properties of metallic materials, with the other being ASTM A370. First released in 1924, it was originally named ASTM E8-24T and is the oldest actively-used standard for the testing of metals.
What is ASTM E4?
ASTM E4 describes the procedures for the force verification of tension or compression, or both, static or quasi-static testing machines. A testing machine consists of the load frame, force sensing device, force display or readout, grips or fixtures, and any other components used for regular testing procedures.
Why are dog bones shaped for tensile testing?
The shoulders are wider than the gauge section which causes a stress concentration to occur in the middle when the sample is loaded with a tensile force. Therefore, a dog bone sample is designed to ensure the highest probability that the sample will fail due to maximum tensile loading.
What does an extensometer do?
An extensometer is an instrument that measures the elongation of a material under stress. The elongation of the material is a physical deformation of the sample and is a type of strain associated with tensile measurements.
What are ASTM test methods?
ASTM test methods are petroleum industry standards, accepted worldwide for quality and reliability. ASTM test methods for petroleum and refined products include: Petroleum and Petrochemical Test Directory. ASTM Tests for Petroleum, Fuels and Petrochemicals.
What is the ASTM Book of standards?
Annual Book of ASTM Standards. The 80+ volume Annual Book of ASTM Standards contains ASTM’s 13,000+ standards and is available in print and Subscription formats. The volumes can be purchased individually, as a section (at a 25% discount) or as the complete 80+ volume set (at a 50% discount).
What is the ASTM method?
Reference Standards: ASTM Methods. The biodiesel component is methyl soyate. ASTM Method D6730-01 is specifically designed for the determination of the individual hydrocarbons present in spark ignition fuels, as well as fuel blends containing oxygenates such as methyl tert -butyl ether, ethyl tert -butyl ether, tert -butanol, ethanol, etc.
What is ASTM testing method?
The ASTM B117 is a standard test carried out to determine the corrosive effect of salt on metallic objects. It is done by spraying salt on a specimen housed in a closed chamber. This is an accelerated form for atmospheric corrosion testing.
What is an ASTM test?
“ASTM” followed by numbers or letters is used on data sheets to indicate the test used to develop the data. These tests are standardized so that they can be reproduced by labs around the world. ASTM is an international standards and testing organization with headquarters in West Conshohocken , PA and offices in Belgium, Canada, China, Mexico and Washington, D.C.