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Metal Casting

Home > Blog > Metal Casting > Page 3
Antique iron fencing made from wrought iron
14 Feb
Metal Casting

Ask a Metallurgist: Wrought Iron vs Cast Iron

  • February 14, 2020
  • Posted by author-avatar David Hilscher

People often assume that cast iron and wrought iron are interchangeable terms for early iron work, but there is a world of difference.

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At a foundry, hot molten steel flows from a blast furnace before being cast into ingots
14 Feb
Metal Casting

The Metal Casting Process: Take a Foundry Tour

  • February 14, 2020
  • Posted by author-avatar David Hilscher

Metalworkers have used the same casting processes for millennia, with the first castings dating back to the 4th century BC in China.

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A BBQ on a backyard patio with a black enameled lid and shiny stainless steel components
13 Feb
Metal Casting

304 vs 430 stainless steel

  • February 13, 2020
  • Posted by author-avatar David Hilscher

For those buying barbeques, however, the choice of stainless used is often 304 vs. 430. (430 is also used for various truck parts.)

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Stainless steel industrial kitchen
28 Jan
Metal Casting

Steel vs. Stainless Steel

  • January 28, 2020
  • Posted by author-avatar David Hilscher

Steel’s affordability makes it an ideal metal for many projects. Stainless steel, on the other hand, is more expensive,

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Shiny chrome exhaust pipes under a cherry red car
30 Oct
Metal Casting

304 Stainless Steel versus 409 Stainless Steel

  • October 30, 2019
  • Posted by author-avatar David Hilscher

In automotive exhaust systems, 304 and 409 are the most common grades of stainless steel. What else are these grades used for? Why is stainless steel used in cars? What sets these two grades apart?

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Stainless steel bloom production
18 Oct
Metal Casting

Stainless Steel Production and Processing

  • October 18, 2019
  • Posted by author-avatar David Hilscher

Stainless steel products are created in a seven-step manufacturing process. Peer into the factory to see how stainless products are made.

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A stainless steel clad modernist building with curved walls reaches towards a blue sky.
16 Oct
Metal Casting

Ask an Engineer: Austenitic Stainless Steel

  • October 16, 2019
  • Posted by author-avatar David Hilscher

Though austenitic stainless steels are expensive they still capture 70% of the market. Learn what makes this rust-resistant, formable, weldable steel stay tough even at cryogenic temperatures.

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A glowing crucible of molten iron is being cast in a foundry
31 Jul
Metal Casting

Flexible Iron? Ductile Iron vs. Cast Iron

  • July 31, 2019
  • Posted by author-avatar David Hilscher

All iron alloys poured in a foundry are cast iron. However, ductile is a relative newcomer…one that is surprisingly flexible.

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A foundry worker in a silver heat suit ladles flaming molten metal from a crucible
25 Jun
Metal Casting

Globalization of Production

  • June 25, 2019
  • Posted by author-avatar David Hilscher

Read our interview with Brian Done, a foundryman for 46 years, on the business of general manufacturing—and what has been lost in an era that has seen the globalization of production.

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Detectable warning plate with patina
29 May
Hardscape, Metal Casting

Stages of Rust

  • May 29, 2019
  • Posted by author-avatar David Hilscher

When oxidation occurs, the metal’s surface forms a scale that darkens to a patina. The alloy in question will determine if the corrosion is invasive or not. In cast iron, rust—a ferrous oxide—can form a thin, protective layer against pitting.

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A group of foundry workers wearing goggles stand around a ladle full of molten metal
10 May
Metal Casting

Business Success: Saved through Innovation

  • May 10, 2019
  • Posted by author-avatar David Hilscher

In the 1990s, most foundries were local, doing custom castings. Globalization created challenges for all but a few. Read the business success story of a family foundry that had to innovate to save the company.

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Stainless steel conveyer belt made of interlocking segments shows some signs of corrosion
24 Apr
Metal Casting

Maintaining your Stainless Steel

  • April 24, 2019
  • Posted by author-avatar David Hilscher

Yes, stainless steel can rust. From red rusted scratches to an all over speckle, corrosion can dull stainless’ silver shine. To prevent corrosion from blemishing your outdoor stainless steel, check out our guide to stainless steel maintenance.

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A stainless steel bollard in front of an outdoor walkway
30 Jan
Metal Casting

Metal Passivation: Preventing Iron & Steel from Getting Active

  • January 30, 2019
  • Posted by author-avatar David Hilscher

Metal corrosion can eat away at parts, causing them to fail. Passivation creates a self-healing chemical seal that uses corrosion to defeat corrosion. Learn about passivation in stainless steel, aluminum, and other metals.

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Operators use optical emission spectrometer
29 Aug
Metal Casting

Spectrometers for Elemental Testing and Analysis

  • August 29, 2018
  • Posted by author-avatar David Hilscher

Spectrochemical analysis is used to determine the arrangement of atoms and electrons within molecules of chemical compounds. Optical emission spectroscopy (OES) is a type of spectrochemical analysis that determines elemental components in solid metal samples, often used in foundries.

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A close-up photo shows a bike chain covered in rust around a wheel dotted with small rust patches
08 Aug
Metal Casting

Ask a Metallurgist: What is Rust?

  • August 8, 2018
  • Posted by author-avatar David Hilscher

Rust: the red flaky corrosion of iron and steel. It’s so common as to be unremarkable…yet what is it, exactly? Why don’t silver, aluminum, or zinc rust? Peek into the world of metal to learn how corrosion hits ferrous and non-ferrous alloys.

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On a dark night in a historical downtown, the lights of ball lamps and a steam clock cast a golden glow.
20 Jul
Metal Casting

History of Vancouver Foundries

  • July 20, 2018
  • Posted by author-avatar David Hilscher

Before Vancouver became the City of Glass, it was host to a strong manufacturing base. Foundries first appeared in Vancouver near the beginning of the 20th century, and they saw rapid growth over the course of several decades.

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Pièces en fonte dans une fonderie
26 Jun
Metal Casting

Introduction à la Fonte: Historique, Types, Propriétés et Utilisations

  • June 26, 2018
  • Posted by author-avatar David Hilscher
ENGLISH | ESPAÑOL La fonte a de nombreuses applications uniques dans le milieu commercial et industriel La fonte a ...

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An engineer tests the hardness of steel in a metal production facility
20 Jun
Metal Casting

Steel Grading: Chemistry and Properties

  • June 20, 2018
  • Posted by author-avatar David Hilscher

Learn more about steel grading systems and the effects of microstructure, hot and cold forming, and heat treatment.

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Sculpture in New York made from investment casting
18 Jun
Metal Casting

What is Investment Casting?

  • June 18, 2018
  • Posted by author-avatar David Hilscher

Investment casting is capable of producing complex parts with excellent as-cast surface finishes. Learn how it works.

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Hardness test is performed on a metal piece
11 Jun
Metal Casting

Rate it, Don’t Break it—Hardness Testing and the Foundry

  • June 11, 2018
  • Posted by author-avatar David Hilscher

What is hardness testing? The Brinell hardness test, Rockwell hardness test, and Leeb rebound hardness test show the properties of castings.

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