Q/TTPT001-2019 Stainless steel wire rods
1 Scope
This technical specification is applicable to stainless steel wire rods. It can be used as the final inspection standard for stainless steel wire rods.
This standard specifies the order information, classification, dimensions, shape, weight permissible tolerance, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of stainless steel wire rods.
This standard is applicable to stainless steel wire rods with diameters ranging from φ5.0mm to φ38.0mm.
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 of the referenced documents (including any amendments) applies.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223 Methods for chemical analysis of iron steel and alloy
GB/T 228.1 Metallic materials - Tensile testing at ambient temperature
GB/T 230.1 Metallic materials - Rockwell hardness test
GB/T 231.1 Metallic materials - Brinell hardness test
GB/T 2101 General requirement of acceptance, packaging, marking, and certification for section steel
GB/T 2975 Steel and steel products - Location and preparation of samples and test pieces for mechanical testing
GB/T 4356 Stainless steel wire rods
GB/T 11170 Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 14981 Dimension, shape, mass and tolerance for hot-rolled round wire rod
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20878 Stainless and heat-resisting steels - Designation and chemical composition
3 Terms and definitions
For the purposes of this standard, the following terms and definitions apply.
3.1 online solution treatment
online solution treatment of austenitic stainless steel refers to a heat treatment method in which hot-rolled wire rods are drawn into wires and then heated in an online solution furnace, followed by high-power air cooling or water spray cooling to obtain the required microstructure and properties
3.2 offline solution treatment
offline solution treatment of austenitic stainless steel refers to a heat treatment method in which hot-rolled wire rods are cooled and then transferred to an offline solution furnace for solution treatment to obtain the required microstructure and properties
4 Order information
Contracts or orders made based on this technical specification shall include the following information:
a) Standard No.;
b) Product name;
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Order information
5 Dimension, shape, weight and permissible tolerance
6 Technical requirements
7 Test methods
8 Inspection rules
9 Quality certificate
10 Packaging, marking, transportation and storage
Annex A (Normative) Uses of stainless steels
Annex B (Normative) Comparison of designations of stainless steels for general purpose
