GB/T 32286.1-2015Soft magnetic alloys - Part 1: Nickel-iron alloys (English PDF)

Foreword

This Part is Part 1 of GB/T 32286 Soft magnetic alloys.

This Part was drafted in accordance with the rules given in GB/T 1.1-2009.

This Part was proposed by China Iron and Steel Industry Association.

This Part shall be under the jurisdiction of National Technical Committee on Iron and Steel of Standardization Administration of China (SAC/TC 183).

Drafting organizations of this Part. Dongbei Special Iron & Steel Group Dalian Precision Alloy Co., Ltd., China Metallurgical Information and Standardization Institute.

Main drafters of this Part. Xu Xiaoping, Luan Yan, Yan Chengming.

Soft magnetic alloys - Part 1: Nickel-iron alloys

1 Scope

This part of GB/T 32286 specifies the classification, order content, dimensions, appearance, technical requirements, test methods, inspection rules, packaging, marking and quality certification for nickel-iron soft magnetic alloy materials.

This Part applies to cold-rolled strips, cold-drawn wires, cold-drawn (rolled) pipes, hot-rolled (forged) rods and flat bars of higher permeability and higher saturation magnetic induction intensity nickel-iron alloys 1J46, 1J50, 1J54 and high permeability nickel-iron alloys 1J76, 1J77, 1J79, 1J80, 1J85, 1J86; cold-rolled sheets of high permeability nickel-iron alloys 1J79 and 1J85; cold-rolled strips of nickel-iron rectangular magnetic alloys 1J34, 1J51, 1J52, 1J65, 1J67, 1J83, 1J403; cold-rolled strips of magnetic temperature compensation nickel-iron alloys 1J30, 1J31, 1J32, 1J33, 1J38; and cold-rolled strips of permanent permeability nickel-iron alloy 1J66.

This Part does not apply to high hardness, high resistance and high permeability nickel-iron alloy materials, corrosion-resistant nickel-iron alloys and nickel-iron alloy materials for magnetic heads (hereinafter referred to as alloy materials).

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 222-2006, Permissible tolerances for chemical composition of steel products GB/T 223.8, Methods for chemical analysis of iron, steel and alloy - The sodium fluoride separation - EDTA titration method for the determination of aluminium content GB/T 223.11, Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method GB/T 223.18, Methods for chemical analysis of iron steel and alloy - The sodium thiosulfate separation iodimetric method for the determination of cupper content GB/T 223.20, Methods for chemical analysis of iron steel and alloy - The Potentiometric titration method for the determination of cobalt content GB/T 223.25, Methods for chemical analysis of iron, steel and alloy - The dimethylglyoxime gravimetric method for the determination of nickel content GB/T 223.28, Methods for chemical analysis of iron steel and alloy - The D-denzoinoxime gravimetric method for the determination of molybdenum content

3 Classification

3.1 Classified into the following five categories by the main characteristics.

3.2 Classified into the following four categories by the nickel content.

4 Order content

The contract for ordering under this Part shall include the following.

5 Dimensions and appearance

6 Technical requirements

7 Test methods

7.1 The inspection items and test methods for alloy materials are shown in Table 14.

Table 14 – Inspection items, sampling locations, sampling quantities and test

methods for alloy materials

7.2 The AC stable value alpha~, AC/DC stable value alpha~= and temperature stable value alphaT of the permanent permeability 1J66 alloy are measured using an AC bridge. The measurement method is as follows.

8 Inspection rules

9 Packaging, marking and quality certification

The packaging, marking and quality certification of alloy materials shall comply with the relevant provisions of YB/T 5242.