Introduction to Additive Manufacturing: Part One


Additive manufacturing is a relatively recent manufacturing method which has become a key area of interest in multiple industrial sectors.
Deriving from CAD models the process can be used to create solid yet highly complex parts and pushes towards a tool-less manufacturing environment meaning improved quality and better efficiency in many cases.

Additive manufacturing (AM) is the process of joining materials to make objects from Computer Aided Design (CAD) model data, usually layer upon layer, as opposed to subtractive manufacturing methods. Additive manufacturing is also called 3D printing, additive fabrication, or freeform fabrication.

Additive manufacturing is a novel method of manufacturing parts directly from digital model by using layer by layer material build-up approach. This tool-less manufacturing method can produce fully dense metallic parts in short time, with high precision. Features of additive manufacturing like freedom of part design, part complexity, light weighting, part consolidation and design for function are garnering particular interests in metal additive manufacturing for aerospace, oil & gas, marine and automobile applications.

A computer-aided design (CAD) is created and exported to stereolithography (STL) file format that is read by the AM equipment. There are many techniques available, which can be categorized according to their raw material. They are: (1) powder-based, (2) liquid-based, and (3) solid based. Some examples of powder-based techniques include selective laser melting (SLM), selective laser sintering (SLS), and electron beam melting (EBM). Liquid-based techniques include stereolithography apparatus (SLA) and polyjet while solid-based techniques include laminated object manufacturing (LOM) and fused deposition modeling (FDM). The strengths of AM compared to conventional manufacturing methods are listed further.

Basically, any material can be produced by one or another AM technique today. These materials can be divided into four main categories: plastics, metals, ceramics, and composites.

Today, a variety of plastics with vastly different mechanical, chemical and environmental properties can be additively manufactured, except for imidized materials. Polyimides are a group of polymers with exceptionally high heat and chemical resistance that are yet to be used in AM. These materials vary in transparencies, thermal or mechanical properties. Polyamides are the most popular thermoplastics used in plastic laser sintering due to their widespread use in injection molding. However, the specific grades of polyamides used in AM have different physical properties and wider processing windows as compared to their injection molding counterparts even though they are chemically identical.

The range of polymers used in AM encompasses thermoplastics, thermosets, elastomers, hydrogels, functional polymers, polymer blends, composites, and biological systems.

The most commonly used metals in AM are steel and its alloys due to their availability, reasonable cost, and biocompatibility as bone and dental implants. Titanium and its alloys are less commonly used followed by nickel, aluminum, copper, magnesium, cobalt-chrome, and tungsten. Precious metals such as gold are also used as summarized in Tables 1-4. Ceramics are widely used in AM as shown in Table 5. Also, crack-free metal matrix composites (MMC) of 99.9% density can be coupled with tungsten carbide-cobalt (WC-Co), ceramic or nonferrous reinforcements to enhance the mechanical properties. Such 3D printed composites are usually used in extreme environmental conditions, which include the oil and gas, mining, automotive, or power industry due to its high hardness and wear resistance. The uniform fine microstructure contributes to the increased hardness, eliminating any need for further improvements in mechanical properties through costly post-processing or heat treatment procedures.

In Tables 1-5 are summarized the materials used in Additive Manufacturing.

Table 1:Types of metal alloys used in AM

Table 2:Titanium alloys used in AM

Table 3:Nickel alloys used in AM

Table 4:Non-ferrous alloys used in AM

Table 5:Types of ceramics used in AM


1. Additive Manufacturing Technology Assessment, QTR Chapter 8, Accessed Feb 2018;

2. V. Bhavar, P. Kattire, V. Patil, S. Khot, K. Gujar, R. Singh: A Review on Powder Bed Fusion Technology of Metal Additive Manufacturing, 4th International Conference and Exhibition on Additive Manufacturing Technologies-AM-2014 September 1-2, Bangalore, India;

3. C. K. Chua, C. H. Wong, W. Y. Yeong: Standards, Quality and Measurement Sciences in 3D Printing and Additive Manufacturing, Academic Press, 2017, ISBN: 978-0-12-813489-4;

4. S. C. Ligon, R. Liska, J. Stampfl, M. Gurr, R. Mülhaupt: Polymers for 3D printing and customized additive manufacturing, Chem. Rev. 2017, 117, p.10212−10290, DOI: 10.1021/acs.chemrev.7b00074.

기술 자료 검색

검색할 어구를 입력하십시오:

검색 범위



물리적 특성은 Total Materia 데이터베이스 내 많은 재질에서 검토하실 수 있습니다.

데이터는 규격의 공식 정보와 Total Materia의 강력한 상호 참조 표를 통해 검색 가능하며 이는 물리적 특성 데이터 검색에 매우 효과적일 것입니다!

신속 검색에 검색할 재질명을 입력합니다. 원하신다면 국가/규격을 지정하신 후 검색 버튼을 클릭합니다.

관심 있는 재질을 선택하신 후, 물리적 특성 링크를 클릭하셔서 선택된 재질의 데이터를 검토합니다. 물리적 특성 데이터 기록의 개수는 링크 옆에 괄호 안에 표시됩니다.

물리적 특성은 원래 데이터 값에 따라 표시됩니다. 규격에 의한 공식 데이터는 공식 탭에서 찾을 수 있고, 다른 출처를 통해 검색된 재질의 데이터는 자신의 탭에 표시 됩니다.

유사 재질 탭에는 원래 재질과 비슷하며 물리적 특성이 포함된 재질을 표시합니다. 등가 재질 검색 시에 매우 유용할 수 있습니다!

일반 탭은 특성 데이터에 대한 일반적인 개요를 제공하며 추가 조사를 위한 유용한 출발점으로 사용될 수 있습니다.

Total Materia 데이터베이스를 사용해 보실 수 있는 기회가 있습니다. 저희는 Total Materia 무료 체험을 통해 150,000명 이상의 사용자가 이용하고 있는 커뮤니티로 귀하를 초대합니다.