YB/T 5220-2014 (English Version) PDF

Scope: This standard specifies the terms and definitions, classification and marking of carbon spring steel wire for non-mechanical springs, ordering content, size, shape and diameter tolerances, minimum disc weight, technical requirements, inspection items, requirements and methods, inspection rules, packaging , logo and quality certificate, transportation and storage, etc. This standard applies to cold-drawn carbon spring steel wires with circular cross-sections (hereinafter referred to as steel wires) for non-mechanical springs such as furniture, car seat cushions, and interior decoration.

YB/T 5220-2014 Referenced Document

GB/T 2103 General requirements for acceptance,packing,marking and quality certification of steel wire
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature*， 2021-12-31 Update
GB/T 238 Metallic materials.Wire.Reverse bend test
GB/T 24242.2 Non-alloy steel wire rod for conversion to wire —Part 2：Specific requirements for general purpose wire rod*， 2020-09-29 Update
GB/T 2976 Metallic materials—Wire—Wrapping test*， 2020-12-14 Update
GB/T 4354 Hot rolled quality carbon steel wire rods
YB/T 081 Rule for rounding off of numberical values and judgement of testing values for technical standards of metallurgy