GB/T 14986.4-2018 Soft magnetic alloys - Part 4: Iron-chromium alloys
1 Scope
This part of GB/T 14986 specifies the terms and definitions, order contents, dimensions, shape, technical requirements, test methods, inspection rules, packaging, marking and quality certification of soft magnetic iron-chromium alloy products with higher saturation magnetic induction intensity and lower coercivity.
This part is applicable to cold-rolled strips, cold-rolled sheets, cold-drawn wires, hot-rolled strips, hot-rolled wire rods and hot-rolled (forged) bars made of 1J111, 1J116, and 1J117 soft magnetic iron-chromium alloys used in certain corrosive media (hereinafter referred to as "alloy products").
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 document (including any amendments) applies.
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method
GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The dimethylglyoxime spectrophotometric method
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The thiocyanate spectrophotometric method
GB/T 223.62 Methods for chemical analysis of iron, steel and alloy - The butyl acetate extraction photometric method for the determination of phosphorus content
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) periodate photometric method for the determination of manganese content
GB/T 223.79 Iron and steel - Determination of multi-element contents - X-ray fluorescence spectrometry (Routine method)
GB/T 223.84 Steel, iron and alloy - Determination of titanium content - Diantipyrylmethane spectrophotometric method
GB/T 223.85 Steel and iron - Determination of sulfur content - Infrared absorption method after combustion in an induction furnace
GB/T 223.86 Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace
GB/T 226 Test method for macrostructure and defect of steel by etching
GB/T 1979 Standard diagrams for macrostructure and defect of structural steels
GB/T 11170 Stainless steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 14986.1-2018 Soft magnetic alloys - Part 1: General requirements
GB/T 15711 Inspection of non-metallic inclusions of steel - Etching test method of tower samples
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 14986.1-2018 apply.
4 Order contents
Order contracts made based on this part shall cover the following items:
a) No. of this part;
b) Alloy designations;
c) Dimensions and precision groups (see Clause 5);
d) Weight (or quantity);
e) Delivery states (see Table 2);
f) Special requirements (if necessary, see 6.7).
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Order contents
5 Dimensions and shapes
6 Technical requirements
7 Test methods
8 Inspection rules
9 Packaging, marking and quality certification
Annex A (Informative) Recommended heat treatment regimes for samples
Annex B (Informative) Basic physical parameters of alloys and typical properties of alloy products
