1 Scope
This standard specifies the product classification, technical requirements, test methods, inspection rules, supply methods, package and marking of manganin and constantan alloy for precision electrical resistance.
This standard is applicable to manganin and constantan alloy wires, sheet and rolled wires for electrical resistance used for manufacturing all standard resistors, splitter and precision/ordinary electrical resistance elements.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 228 Metallic Materials - Tensile Testing at Ambient Temperature
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 2829 Sampling Procedures and Tables for Periodic Inspection by Attributes (Apply to Inspection of Stability for Productive Process)
GB/T 6146 Test Method for Resistivity of Precision Resistance Alloys
GB/T 6147 Test Method for Thermoelectric Power of Precision Resistance Alloys
GB/T 6148 Test Method for Temperature-resistance Coefficient of Precision Resistance Alloys
JB/T 6819.3 Instrument Material Terminology - Resistance Material, Conducting Material and Electric Contact Material
JB/T 9493 Method for Chemical Analysis of Manganin and Novokostant Resistance Alloy
JB/T 9499 Methods for Chemical Analysis of Constantan Resistance Alloys
Foreword I
1 Scope
2 Normative References
3 Term and Definitions
4 Product Classification
5 Technical Requirements
6 Test Methods
7 Inspection Rules
8 Supply Method, Package and Marking
Appendix A (Informative) Resistance per Meter of Constantan Rolled Wire
Appendix B (Informative) Recommended Sampling Inspection Plan for the Acceptance Inspection of Resistance Alloy Product
