- MEM30007A - Select common engineering materials
MEM30007A
Select common engineering materials
Application
This unit applies to technician level activities in manufacturing and engineering environments. Work is carried out under supervision. Band: 0 Unit Weight: 0 |
Elements and Performance Criteria
ELEMENT | PERFORMANCE CRITERIA |
1. Identify common engineering materials by their principal properties | 1.1. The principal properties of ferrous and non-ferrous metals are identified. 1.2. The principal properties of thermosetting and thermoplastic polymers are identified. 1.3. The principal properties of ceramics and composite materials are identified. 1.4. The effects of different types of bonding in materials are identified. 1.5. The effects of mechanical and thermal processes on the principal properties of materials are identified. |
2. Select materials for specific applications | 2.1. The engineering requirement for the specific application is determined in consultation with others. 2.2. Material is selected based on the requirement and consideration of principal properties and further processing. 2.3. Selection is confirmed according to standard operating procedures. |
3. Verify selected material as fit for purpose | 3.1. Appropriate tests for the required properties are identified. 3.2. Testing of materials is arranged with appropriate persons, if necessary. 3.3. Test results are analysed and material choices are confirmed or modified as appropriate. |
Required Skills
Required skills |
Look for evidence that confirms skills in: undertaking research selecting/carrying out tests appropriate to the material communicating documenting planning and sequencing operations reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents |
Required knowledge |
Look for evidence that confirms knowledge of: classification of materials: metals and non-metals ferrous and non-ferrous metals polymers (thermoplastics, thermosetting and elastomers) ceramics composite materials structure of materials physical properties of materials: electrical conductivity/resistivity specific gravity/density thermal conductivity/expansion specific heat melting/boiling points magnetic properties optical properties mechanical properties: strength - yield, tensile, compressive stress/strain data hardness toughness (impact and slow strain) elasticity plasticity ductility malleability fatigue creep chemical properties: corrosion of metals, corrosion processes, mechanisms degradation of polymers materials testing methods - destructive testing and applications: tensile compressive shear torsion hardness impact fatigue creep visual corrosion testing engineering materials engineering applications of ferrous metals: cast irons carbon and alloy steels stainless steels engineering applications of non-ferrous metals: aluminium and its alloys copper, brass and bronze nickel alloys, zinc, titanium magnesium refractory metals engineering applications of polymers: thermosetting polymers thermoplastic polymers ceramics and glasses effects of mechanical and thermal processes on the properties of materials: casting forging, rolling and extrusion cold forming powder processes heat treatment joining - fasteners soldering brazing welding adhesives finishing - coatings, metallic and non-metallic hazards and control measure associated with selecting common engineering materials, including housekeeping safe work practices and procedures |
Evidence Required
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. | |
Overview of assessment | A person who demonstrates competency in this unit must be able to select common engineering materials. |
Critical aspects for assessment and evidence required to demonstrate competency in this unit | Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts. |
Context of and specific resources for assessment | This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate. This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with selecting common engineering materials, or other units requiring the exercise of the skills and knowledge covered by this unit. |
Method of assessment | Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning should not require language, literacy and numeracy skills beyond those required in this unit. The candidate must have access to all tools, equipment, materials and documentation required and must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials. |
Guidance information for assessment |
Range Statement
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. | |
Common engineering materials | Includes ferrous metals, cast irons, carbon and alloy steels, stainless steels, coated steels, non-ferrous metals, aluminium and its alloys, copper and its alloys, nickel alloys, zinc, titanium, magnesium, refractory metals, polymers, thermosetting polymers, thermoplastic polymers, ceramics and glasses |
Appropriate tests | Tests which can be undertaken by a technician within the organisation as well as those required to be undertaken by external organisations, including simple tests |
Required properties | Properties to be tested include tensile strength, compression, shear characteristics, torsion, hardness, impact resistance, fatigue resistance, creep resistance, visual appearance and colour, magnetic properties, corrosion resistance |
Appropriate persons | Internal technicians and/or external organisations |
Sectors
Unit sector |
Competency Field
Engineering technician |
Employability Skills
This unit contains employability skills. |
Licensing Information
Not Applicable