Standard No.:	HG/T 4282-2011
English Name:	Test method of tensile for plastics welded test specimen
Chinese Name:	塑料焊接试样 拉伸检测方法
Chinese Classification:	G94    Non-metal chemical machinery equipment
Professional Classification:	HG    Professional Standard - Chemistry
Source Content Issued by:	State Economic and Trade Commission
Issued on:	2011-12-20
Implemented on:	2012-7-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1 business day

Test method of tensile for plastics welded test specimen 1 Scope This standard specifies the terms and definitions, symbols and descriptions, test principles, test devices, test sample preparation, state adjustment, test methods, test results and test reports by the test method of tensile for plastics welded specimen. This standard is applicable to tensile testing for thermoplastic samples in hot-gas welding, extrusion welding, hot fusion welding, electrofusion welding and other welding procedures. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies. GB/T 2035 Terms and definitions for plastics GB/T 2918-1998 Plastics — Standard atmospheres for conditioning and testing GB/T 3375 Welding terminology GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 11997 Plastic — multipurpose test specimens GB/T 17200 Technical specification for tensile, compression and flexural testing machines for rubber and plastics (constant rate of traverse) ISO 2602:1980 Statistical interpretation of test results — estimation of the mean — confidence interval 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 2035 and GB/T 3375 and the following apply. 3.1 welding beads plastic melt overflowing from the edge of weld in welding 3.2 test sample samples for welding procedure qualification test, made according to the requirements of technical standards; a local sample taken from the test piece, including base metal and welded joint Note: Test samples can be called test shims (such as dumbbell-shaped test shim for tensile test) depending on different shapes of test sample, and test pipes (such as welding pipes for full cross-section tensile). 4 Symbols and interpretations

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and interpretations 5 Test principle 6 Test device 6.1 Testing machine 6.2 Instrument for measuring the width and thickness of test sample 6.3 Sample preparation machine and milling cutter 7 Test sample preparation 7.1 Sampling requirements 7.2 Test sample shape 7.3 Test sample dimensions 7.4 Test sample preparation method 7.5 Number of test samples 8 Conditioning 9 Test methods 9.1 Test environment 9.2 Measurement of test sample 9.3 Installation of test sample 9.4 Tensile speed of test sample 9.5 Data record 10 Test results 10.1 Tensile strength 10.2 Statistical analysis parameters 10.3 Significant digits 10.4 Test result processing 11 Test report Annex A (Informative) Test report format Figure 1 Rectangular test samples of plates and pipes for tensile test Figure 2 Dumbbell-shaped test samples of plates and pipes for tensile test Figure 3 Schematic diagram of pipe sampling Table 1 Symbols and interpretations Table 2 Dimensions of rectangular test sample Table 3 Dimensions of dumbbell-shaped test sample Table 4 Tensile speed of test sample of primary plastic material Table A.1 Tensile test report for plastics welded test sample