GB/T 7964-2020 Translated English of Chinese Standard. (GBT 7964-2020, GB/T7964-2020, GBT7964-2020): Sintered Metal Materials (Excluding Hardmetal) - Tension Testing at Room Temperaturehttps://www.chinesestandard.net, 20 juin 2020 - 13 pages This Standard specifies the room temperature tensile test method for sintered metal materials, including principles, symbols and instructions, specimens, test device, test procedures, calculation of test results, numerical rounding-off and test reports. This Standard is applicable to the determination of the yield strength, specified plastic elongation strength, tensile strength, elongation after break, and reduction of area for machined or non-machined sintered metal materials. |
Table des matières
| 3 | |
Scope | 5 |
Symbols and Instructions | 6 |
Specimen | 7 |
Calculation of Test Results | 8 |
Numerical Roundingoff | 10 |
Test Report | 11 |
Appendix A Informative Comparison List between Old and New Symbols | 12 |
Expressions et termes fréquents
accordance with GB/T according to Formula accuracy 0.02mm arithmetic mean beam displacement control broken Minimum diameter broken Original cross-sectional broken Original thickness calculated according change elongation Change yield point change yield stress Clause Comparison List corresponding load cylindrical specimen Edition elongation after break Extension of extensometer extensometer gauge length flat specimen Original gauge length Original Instructions Unit Minimum length Original gauge Level-1 or better List between Old load-elongation diagram Materials Excluding Hardmetal maximum force value measurement accuracy 0.01mm Metal Materials Excluding Modify measurement accuracy Number Numerical Rounding-off plastic elongation force plastic elongation strength provisions of GB/T Range Round-off record the corresponding Reduction of area Sintered Metal Materials specified plastic elongation specimen is broken specimen Original diameter Standard strain rate strength Graphic method Symbols and Instructions symbols can refer Symbols Instructions Unit tensile curve Figure Tensile properties tensile strength Test Report test results testing machine thickness of gauge Unit Minimum cross-sectional yield strength