ASTM A340: Magnetic Terminology Testing Services
In ASTM A 340 various terminologies have been given related to magnetic testing. Magnetic testing symbols and terminologies are used to indicate certain parameters, methodologies, and findings acquired during magnetic testing. Here are some examples of common symbols and their definitions.
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- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
What Is ASTM A340 Magnetic Terminology?
ASTM A 340 is a standardized guide to the symbols, definitions, and terminology used in the magnetic testing of metallic materials. This standard provides the technical language for expressing the results of magnetic property measurement, magnetic material characterization, and electromagnetic testing programs. ASTM A 340 provides accepted symbols, units, and technical definitions for the magnetic properties of materials, such as permeability, coercivity, remanence, hysteresis, and flux density. This provides a standardized terminology framework to materials engineers, testing laboratories, and magnetic material researchers.
Applications and Benefits of ASTM A340 Magnetic Terminology Testing
Scope
ASTM A 340 provides standardized symbols and definitions for all magnetic quantities, material properties, and test parameters for DC and AC magnetic tests on ferromagnetic and soft magnetic materials. This facilitates the interpretation, reporting, and comparison of results for magnetic material property data.
ASTM A 340 magnetic testing terminology covers:
- Standardized symbols and definitions for magnetic field strength, flux density, and permeability
- Coercive force, remanence, and hysteresis loop parameter terminology and symbol definitions
- AC and DC magnetic property measurement terminology for soft magnetic material testing
- Magnetic core loss, exciting power, and impedance terminology for electrical steel evaluation
- Standardized units and conversion factors for magnetic quantity reporting per ASTM A 340
Applications
- Electrical steel and soft magnetic material testing and property reporting programs
- Permanent magnet material characterization and magnetic property specification
- Transformer core, motor lamination, and magnetic component material evaluation
- Electromagnetic and non-destructive magnetic testing of ferromagnetic materials
- Research and development programs requiring standardized magnetic testing terminology
Benefits
- Provides a standardized magnetic terminology framework for consistent property reporting
- Supports magnetic material specification compliance and inter-laboratory data comparison
- Enables clear communication of magnetic test results across engineering and research teams
- Delivers consistent symbol and unit usage aligned with ASTM A340 magnetic testing standards
- Reduces interpretation risk by establishing unambiguous magnetic quantity definitions
Our ASTM A340 Testing Procedure
Terminology Review
Applicable magnetic quantity symbols and definitions identified per ASTM A 340 requirements.
1Symbol & Unit Verification
Magnetic test symbols and units verified against ASTM A 340 standardized definitions.
2Property Reporting Alignment
Magnetic property data reported using ASTM A 340 standardized symbols and terminology.
3Data Analysis & Reporting
Magnetic test results compiled using ASTM A 340 consistent terminology for test compliance result.
4ASTM A340 Test Parameters and Requirements
| Parameter | Details |
|---|---|
| Applicable Materials | Ferromagnetic, soft magnetic, electrical steel, and permanent magnet materials |
| Terminology Scope | DC and AC magnetic property symbols, definitions, and standardized units |
| Magnetic Quantities Covered | Field strength, flux density, permeability, coercivity, remanence, core loss, hysteresis |
| Unit System | SI and CGS magnetic unit systems with defined conversion factors per ASTM A 340 |
| Measured Outputs | Standardized magnetic property data, symbol usage records, and test compliance result |
- DC and AC magnetic property measurement systems for ferromagnetic material testing
- Hysteresisgraph and permeameter systems for hysteresis loop parameter measurement
- Epstein frame and toroidal core test systems for electrical steel evaluation
- Calibrated magnetic field generation and measurement instrumentation
- Specialist magnetic data acquisition and property reporting software
- Data reporting and magnetic property visualization system
Equipment and Instrumentation Used for ASTM A340 Testing
What You Receive: Test Report, Data, and Certification
- Magnetic property measurement data reported using ASTM A 340 standardized symbols
- Hysteresis loop parameters including coercivity, remanence, and permeability per ASTM A 340
- AC magnetic property data including core loss and exciting power per standardized terminology
- Test compliance result assessed against defined magnetic property specification requirements
- ASTM A 340 aligned magnetic test report for material approval and research submissions
ASTM A340 Magnetic Terminology FAQs
ASTM A340 is a standard that provides standardized symbols, terms, and definitions for the interpretation of terminology for the purposes of magnetic testing and evaluation of magnetic properties.
ASTM A340 helps engineers, researchers, and technicians communicate clearly. It defines standard terms for magnetic testing. This reduces confusion and ensures everyone understands the symbols and definitions used in magnetic material characterization.
ASTM A340 includes terms related to magnetic fields, magnetization, magnetic flux density, permeability, hysteresis, and other features linked to testing and assessing magnetic materials.
ASTM A340 terminology is used in electrical engineering, materials science, power generation, electronics manufacturing, and research labs that study or apply magnetic materials and testing procedures.
ASTM A340 offers definitions and terminology. However, it does not detail specific magnetic testing procedures or measurement methods. Therefore, you need to refer to other standards to conduct magnetic property tests.
Why Choose Infinita Lab for Magnetic Terminology Testing
At the core of this breadth is our network of 2,000+ accredited laboratories across the USA, offering access to over 10,000 testing methods and analytical services. From advanced materials characterization (SEM, TEM, RBS, XPS) to mechanical, chemical, environmental, biological, and standardized ASTM/ISO-compliant testing, we deliver unmatched flexibility, specialization, and scale. You are never limited by geography, facility, or methodology — Infinita Lab connects you to the right expertise and testing solution, every time.
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