GB/T 33164.2-2016 Translated English of Chinese Standard (GBT 33164.2-2016, GB/T33164.2-2016, GBT33164.2-2016): Spring Steels for Automotive Suspension System - Part 2: Hot Rolled Round Steel Bar and Wire RodThis Part specifies the ordering content, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification of round steel bars and wire rod for spiral spring, torsion bar and stabilizer bar in automotive suspension system. |
Contents
Foreword | 7 |
Technical Requirements | 8 |
GBT 8170 Rules of Rounding off for Numerical Values and Expression | 9 |
Test Methods | 14 |
Inspection Rules | 15 |
Packaging Marking and Quality Certification | 16 |
Annex A Informative Table of Comparison of the Designations of This Part with the Designations of Domestic and Overseas Standards | 17 |
Common terms and phrases
51CrMnV 52CrMnMoV 55SiCrV acid etching macrostructure annealed spring steels arc length austenitic bar and wire bright steels chemical compositions Code Type Code coil billet contract cracks Defects of Hot Delivery Hardness Designation Hot rolled Designations and Chemical Different coils GB/T Different pcs End hardenability etching macrostructure test evaluation criteria fully decarburized layer Grade 1 FB graphite Heat Treatment Methods Hot rolled Destressed hot rolled round inspection and acceptance Macrostructural Defects nondestructive test pc coil pc of steel porosity Centre Press Working Methods purchaser rod of 55SiCr rolled round steel round steel bar sampling location series Coarse series single side special requirements specified for Group specified in GB/T specified in Table Specimen Numbers steel Different coils steel Whole coil supplier can ensure surface defects surface of bright surface of hot surface of wire surface roughness grade temperature/°C test methods total decarburization depth Type Code Type ultrasonic test Whole pc