1 A (Very) Brief History of Welding
Douglas Rupik, M.Ed., JIW

Metalworking in the Ancient World
Nobody today knows all the details regarding the beginnings of metalworking. Genesis 4:22 mentions “…Tubal-Cain, an instructor of every artificer in brass and iron…”, portrayed in Figure 1.1. The Ancient Greek historian Herodotus tells us that Glaucus of Chios was the man who single-handedly invented iron welding (Herodotus 2008, p. 25). Perhaps metals were first brought into use after being discovered in a fire pit, when the heat of a large fire melted metal ores contained in rocks that had accumulated in the bottom of the pit. Tools and weapons made from these metals would have been superior to those made from wood, stone, clay, or bone. Metals could be given a sharper edge and were more durable and stronger. Peoples who had the use of metals had an advantage over those that didn’t, and they were more likely to survive and prosper. Metal tools and goods lasted longer and enabled work to be done more efficiently.
Forge Welding
It may be that the first metal tools or weapons were beaten into shape, and were only later cast into shape. Casting is the process of pouring molten metal into a mold. While this is suitable for simply shaped objects, complex objects require multiple pieces to be attached. This may have been accomplished by riveting them, placing pieces together and pouring molten metal over them, or by forging.

Forge welding is, in its simplest form, hammering two red-hot pieces of metal together until they bond. The Iron Pillar of Delhi, dated around 310 AD, was built using forge welding (Cary & Helzer 2005, p. 4).
From before the European Middle Ages up until the beginning of the 20th century, blacksmiths used forge welding to create a wide variety of metal objects used in daily life, from kitchen utensils to architectural features and weaponry. This made the blacksmith’s role an essential part of every community.
Then, with the advent of the Industrial Revolution in Western society and the necessity for increased productivity, the use of forge welding declined and fusion welding rose in its place.

In ancient East Asia, cast bronze was used for creating ritual objects, musical instruments, sculpture, and weapons. By the end of the second century AD, bronze was being replaced by iron as the material of choice for casting metal objects, later even being used in architecture (East Asia, n.d.).
In ancient Sub-Saharan Africa, metals have been smelted, cast, and forged since before recorded history, with their use being nearly universal by 1000 AD. Copper, bronze, and iron were used for art, jewelry, tools, currency, and weapons. Interestingly, unlike in Europe the blacksmiths were often separated from the community and worked outside of villages (Reid 2005).
In pre-Columbian America, metalworking was largely limited to art and jewelry and primarily in copper, silver, and gold. Highly skilled smiths used a variety of techniques ranging from casting to cold hammering and heat treating (American Indian Peoples, n.d.).

Development of Modern Welding Processes
Electric arc welding, resistance welding, and oxy-fuel welding processes were invented and being developed in the 19th century. The first practical arc welding process was carbon arc welding, developed by Nikolay Benardos of Russia in 1881. However, these modern welding processes did not become widely used until World War I (Miller Electric, 2020).
Arc welding was used primarily by England and Germany during WW1 in the manufacture of ships and airplanes. Shortly after WW1, automatic wire feed welding was developed, followed by heliarc or gas tungsten arc welding (GTAW), then a variety of electric welding processes including inert gas shielded welding and flux-cored wire feed welding (FCAW). Today there are over a hundred different welding processes, with more being developed (The Crucible, n.d.).
Metal alloys are also continually being developed by metallurgists to enhance weldability and mechanical properties. (Had the Titanic been built of modern steel alloys, it may have survived striking an iceberg.)
Modern civilization is dependent on metals and the people who join them together. This textbook will discuss the most popular forms of welding and basic information to help you begin your career as a welder.
Attributions
- Figure 1.1: Andrea di bonaiuto, apotesosi di san tommaso d’aquino, scienze ed arti 11 Musica e Tubalcain 3 by Sailko is released under CC BY 3.0
- Figure 1.2: Qutub Minar, Delhi by unci_narynin is released under CC BY-NC-SA 2.0
- Figure 1.3: Wrought iron gate detail, St. Philip’s Church, Charleston, SC by Spencer Means is released under CC BY-SA 2.0
- Figure 1.4: Scene-de-forge-edo-p1000665 by Rama in the Public Domain; Created in the Edo Period between 1603 and 1868.
An American National Standard. (2021). Safety in Welding, Cutting, and Allied Processes. In American Welding Society (pp. 1–72). https://aws-p-001-delivery.sitecorecontenthub.cloud/api/public/content/f524cc78ee9c4e00a703bbe12b2f368b
Giles, Z. (2022, April 14). The History of Plasma Cutting: The Evolution of Plasma Cutting. American Torch Tip. https://americantorchtip.com/blog/plasma-cutting-history-the-evolution-of-plasma-cutting/
Plasma, waterjet and laser cutting systems from Hypertherm. (n.d.). Www.hypertherm.com. Retrieved May 16, 2024, from https://www.hypertherm.com/en-US/global-landing-page/?returnUrl=751
Reactive metals are metals that, when heated to elevated temperatures, react with the oxygen and nitrogen. The heat of welding raises the temperature of the weld and adjacent base material above the reaction temperature. Reactive metals are zirconium, titanium, and beryllium.
As a welder starting to learn the trade you will not be welding on these metals, however it is important to know that they exist because these metals are used and welded on in Washington State. Due to the increased cost of the base materials and their use in critical applications, most welding will be performed with automatic processes. Does your program offer classes on robots? Welding processes are automated with robotics in many industries. If you are interested in robotics, look into your school’s course offerings to see if an introductory class to robotics you might like is offered in a mechatronics program.
Development of welding reactive metals
Reactive metals are just that, metals that react when welding. These metals react with the gasses in the atmosphere at elevated temperatures in a negative way leading to contamination of your weld and/or heavy oxidation of the nearby base materials. To avoid this contamination, special care is needed in applying protective shielding gasses.
If welding reactive metals requires more preparation and more care when welding, why weld them? The material properties of these metals are needed for the applications of aerospace, nuclear, and other demanding in-service environments where the extra cost of fabrication is required.
Basics of welding reactive metals
All three reactive metals are welded. Beryllium is a dangerous metal if inhaled and should not be used in fabrications unless adequate safety precautions are taken.
Due to the reactive nature of these metals, cleanliness and the application of inert shielding gasses are even more important than stainless steel welding. If you have welded on low carbon steel and then switched to stainless steel, then you know the importance of cleanliness and shielding gas when welding. Reactive metals are another step above stainless steel in terms of both cleanliness and shielding gasses.
GTAW is used to weld zirconium and titanium. GMAW can be used to weld titanium. Other processes that are beyond the scope of this text are also used, such as laser beam welding (LBW). When GTAW and GMAW are used to weld titanium, argon is normally used. Helium and mixtures of argon and helium can be used but the price of helium has increased significantly in the 2020s resulting in its decreased use. As with all welding, but especially more expensive metals, welders are encouraged to test their machine settings on a scrap piece of material prior to production welding. This is especially important with reactive metals to help ensure quality welds.
Due to the low thermal conductivity of titanium, you will notice that the weld pool will be larger than with metals that more easily move heat into the base material. Larger gas nozzles with higher flows are used to compensate for these larger weld pools. Chill bars may also be used to help with heat dissipation.
For GTAW of titanium it is important for the welder to keep the filler metal covered in shielding gas while it is hot, otherwise the filler metal will become contaminated by the atmosphere. For production welding out of position or of more complex shaped fabrications, it is important to protect the weld pool from air drafts with additional pieces of material to block air flows such as using baffles.
In some cases a welding box or chamber may need to be used when welding reactive metals. Less so for titanium, but it may become a must for complex shapes that would be difficult to ensure shielding gas coverage. Common welding defects for titanium include porosity and cracks which, of the many causes, can be attributed to bad shielding gas coverage. This chamber essentially submerges the weldment in shielding gas.
Uses of reactive metals in industry today
Titanium is used in the aerospace industry for its strength to weight ratio and corrosion resistance. The X-3 Stiletto aircraft was the first aircraft with major titanium airframe components and was built in 1953. The plane was intended for Mach 2 speeds but had underpowered engines which limited it to Mach 1 speeds.

The X-3 represents the first major use of titanium for airplanes but it was not the last. The SR-71 Blackbird “airframes were built almost entirely of titanium and other exotic alloys to withstand the heat generated by sustained high-speed flight” (NASA, 2017). The plane was capable of Mach 3 speeds for an hour. Many planes since then have titanium components due to their desirable mechanical properties. Boeing’s 787 uses titanium for its lighter weight to improve fuel efficiency.

Titanium also has desirable anti-ballistic properties. Due to the limited availability of certain grades of titanium, these specialty alloys are mostly used for high performance aircraft. However, it is also used for ballistic armor plating. The two ballistic test plates below show the test results and holes in an effort to develop armor plating for ground vehicles.

Titanium is also used in high end bicycle frames. Figure 21.12 shows a cracked bicycle frame on a model bicycle that was recalled for safety reasons. Cracks on any weldment that is subjected to cyclical motion such as vibration from riding on worn road surfaces can speed up crack propagation.

The failure in the titanium bicycle frame in Figure 21.12 goes through the weld and its HAZ. It is highly likely that the crack started in the HAZ and spread from there. Welds on bicycle frames are typically performed using GTAW.
Zirconium is used for nuclear fuel cladding. Cladding is the metal tubing that contains ceramic uranium fuel pellets (not shown). These tubes are about 12 feet long and are arranged into fuel bundles such as the one shown in Figure 21.13 below. These fuel rods are built by sliding the ceramic pellets into the zirconium rods, and then welding the end caps.
GTAW is used, however it is an automated process due to the large number of high quality welds required. Each commercial reactor core in the United States contains approximately 52,000 of these fuel rods, each of which has circumferential welds at the top and bottom of the rod. About one-third of these rods are replaced every 18 to 24 months in what is called a fuel outage. This means each refueling campaign consists of about 35,000 circumferential welds on the fuel rods alone.

Beryllium is used for its superior mechanical properties for special applications. The James Webb Telescope, which has been returning amazing pictures of deep space not seen before, was fabricated with Beryllium due to its stiffness at low temperatures. When operating in space, the telescope experiences temperatures of about -415 °F.

Beryllium is used in many common applications due to it being “stronger than steel and lighter than aluminum” (OSHA, n.d.). It also has a high melting point, and excellent thermal conductivity and thermal stability. The department of labor lists the following uses for beryllium:
Industry |
Industry Uses |
---|---|
Aerospace |
Aircraft braking systems, engines, satellites, space telescopes |
Automotive |
Anti-lock brake systems, ignition |
Ceramic Manufacturing |
Rocket covers, semiconductor chips |
Defense |
Components for nuclear weapons, missile parts, guidance systems, optical systems |
Dental Labs |
Alloys in crowns, bridges, and dental plates |
Electronics |
X-rays, computer parts, telecommunication parts, automotive parts |
Medicine |
Laser devices, electro-medical devices, X-ray windows |
Nuclear Energy |
Heat shields, reactors |
Sporting Goods |
Golf clubs, bicycles |
Telecommunications |
Optical systems, wireless base stations |
Note. Common Beryllium Uses by Industry from Beryllium - Overview by OSHA (n.d.), U.S. Department of Labor.
Beryllium is a health hazard as mentioned towards the beginning of this chapter. Any fabrication activities need to follow all applicable safety precautions to help prevent severe damage to your health.
Attributions
- Figure 21.10: X-3: First Use of Titanium in Major Airframe Components by National Aeronautics and Space Administration in the Public Domain; United States government work
- Figure 21.11: SR-71 Takeoff with Afterburner Showing Shock Diamonds in Exhaust by National Aeronautics and Space Administration in the Public Domain; United States government work
- Figure 21.12: Ballistic Tests of P/M Ti © Oak Ridge National Laboratory, U.S. Dept. of Energy Used with permission. Courtesy of Oak Ridge National Laboratory, U.S. Dept. of Energy. ORNL Security & Privacy Notice
- Figure 21.13: CPSC, CF Roark Welding & Engineering Announce Recall of Bicycle Frames by U.S. Consumer Product Safety Commision in the Public Domain; United States government work
- Figure 21.14: Fuel rods in a nuclear reactor are mainly made of zirconium alloys. These long metal tubes contain pellets of fissionable material, typically uranium oxide pellets. © International Atomic Energy Agency Used with permission. Courtesy of the International Atomic Energy Agency. IAEA Terms of Use
- Figure 21.15: Into the Looking Glass For Webb Telescope Tests by The National Aeronautics and Space Administration in the Public Domain; United States government work

Metalworking in the Ancient World
Nobody today knows all the details regarding the beginnings of metalworking. Genesis 4:22 mentions “…Tubal-Cain, an instructor of every artificer in brass and iron…”, portrayed in Figure 1.1. The Ancient Greek historian Herodotus tells us that Glaucus of Chios was the man who single-handedly invented iron welding (Herodotus 2008, p. 25). Perhaps metals were first brought into use after being discovered in a fire pit, when the heat of a large fire melted metal ores contained in rocks that had accumulated in the bottom of the pit. Tools and weapons made from these metals would have been superior to those made from wood, stone, clay, or bone. Metals could be given a sharper edge and were more durable and stronger. Peoples who had the use of metals had an advantage over those that didn’t, and they were more likely to survive and prosper. Metal tools and goods lasted longer and enabled work to be done more efficiently.
Forge Welding
It may be that the first metal tools or weapons were beaten into shape, and were only later cast into shape. Casting is the process of pouring molten metal into a mold. While this is suitable for simply shaped objects, complex objects require multiple pieces to be attached. This may have been accomplished by riveting them, placing pieces together and pouring molten metal over them, or by forging.

Forge welding is, in its simplest form, hammering two red-hot pieces of metal together until they bond. The Iron Pillar of Delhi, dated around 310 AD, was built using forge welding (Cary & Helzer 2005, p. 4).
From before the European Middle Ages up until the beginning of the 20th century, blacksmiths used forge welding to create a wide variety of metal objects used in daily life, from kitchen utensils to architectural features and weaponry. This made the blacksmith's role an essential part of every community.
Then, with the advent of the Industrial Revolution in Western society and the necessity for increased productivity, the use of forge welding declined and fusion welding rose in its place.

In ancient East Asia, cast bronze was used for creating ritual objects, musical instruments, sculpture, and weapons. By the end of the second century AD, bronze was being replaced by iron as the material of choice for casting metal objects, later even being used in architecture (East Asia, n.d.).
In ancient Sub-Saharan Africa, metals have been smelted, cast, and forged since before recorded history, with their use being nearly universal by 1000 AD. Copper, bronze, and iron were used for art, jewelry, tools, currency, and weapons. Interestingly, unlike in Europe the blacksmiths were often separated from the community and worked outside of villages (Reid 2005).
In pre-Columbian America, metalworking was largely limited to art and jewelry and primarily in copper, silver, and gold. Highly skilled smiths used a variety of techniques ranging from casting to cold hammering and heat treating (American Indian Peoples, n.d.).

Development of Modern Welding Processes
Electric arc welding, resistance welding, and oxy-fuel welding processes were invented and being developed in the 19th century. The first practical arc welding process was carbon arc welding, developed by Nikolay Benardos of Russia in 1881. However, these modern welding processes did not become widely used until World War I (Miller Electric, 2020).
Arc welding was used primarily by England and Germany during WW1 in the manufacture of ships and airplanes. Shortly after WW1, automatic wire feed welding was developed, followed by heliarc or gas tungsten arc welding (GTAW), then a variety of electric welding processes including inert gas shielded welding and flux-cored wire feed welding (FCAW). Today there are over a hundred different welding processes, with more being developed (The Crucible, n.d.).
Metal alloys are also continually being developed by metallurgists to enhance weldability and mechanical properties. (Had the Titanic been built of modern steel alloys, it may have survived striking an iceberg.)
Modern civilization is dependent on metals and the people who join them together. This textbook will discuss the most popular forms of welding and basic information to help you begin your career as a welder.
Attributions
- Figure 1.1: Andrea di bonaiuto, apotesosi di san tommaso d'aquino, scienze ed arti 11 Musica e Tubalcain 3 by Sailko is released under CC BY 3.0
- Figure 1.2: Qutub Minar, Delhi by unci_narynin is released under CC BY-NC-SA 2.0
- Figure 1.3: Wrought iron gate detail, St. Philip's Church, Charleston, SC by Spencer Means is released under CC BY-SA 2.0
- Figure 1.4: Scene-de-forge-edo-p1000665 by Rama in the Public Domain; Created in the Edo Period between 1603 and 1868.
Grill, J. (2024, January 12). GMAW—Mig welding history. Weld Guru. https://weldguru.com/mig-welding-history/
Hobart, H. I. of W. T. (2009). Welding guide.
Jeffus, L. F. (2011). Welding: Principles and applications (7th ed.). Cengage.
Jeffus, L. F. (2011). Welding and metal fabrication (1st ed.). Cengage Learning.
Moniz, B. J. (2015). Welding skills. American Technical Publishers.