HB 5441.3-1989 Powder metallurgy products and powder performance testing: Testing method for tensile strength of sintered metal materials (excluding hard alloy)

HB 5441.1-1989 Powder metallurgy products and properties of powders - Determination of metal powder particle size by sieving method HB 5441.2-1989 Powder metallurgy products and powder performance testing, testing method for oil content of permeable sintered metal materials HB 5441.4-1989 The testing methods for the performance of powder metallurgy products and the specific properties of metal powder include testing the bulk density of metal powder HB 5441.5-1989 Powder metallurgy products and powder performance testing: Test method for the density of metal powder by shaking HB 5441.6-1989 Powder metallurgy products and powder performance testing: Methods for testing the flowability of metal powders HB 5441.7-1989 Powder metallurgy products and powder performance testing: Test methods for permeability sintered metal materials density and open-hole testing HB 5441.8-1989 Powder metallurgy products and powder performance testing determination of sintered metal sleeve radial compression crush strength HB 5441.9-1989 Powder metallurgy products and properties of powders. Determination of surface hardness of sintered metal materials (excluding hard alloy)

GB/T 228-2002 Metallic materials—Tensile testing at ambient temperature GB/T 228.1-2010 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.1-2021 Metallic materials—Tensile testing—Part 1:Method of test at room temperature GB/T 228.2-2015 Metallic materials—Tensile testing—Part 2:Method of test at elevated temperature GB/T 228.3-2019 Metallic materials—Tensile testing—Part 3:Method of test at low temperature GB/T 228.4-2019 Metallic materials—Tensile testing—Part 4:Method of test in liquid helium GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values

ISO 2740-73