All Casting Blog Posts

Stainless steel cloud sculpture in Chicago

A Complete Guide to Stainless Steel

In this guide: How is stainless steel made? What is stainless steel made of? Types of stainless steel Stainless steel grades Mechanical properties of stainless steel A technical look – stainless steel’s molecular microstructure Care and maintenance Stainless steel is the common name for a large group of ferrous alloys

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A stainless steel clad modernist building with curved walls reaches towards a blue sky.

Austenitic Stainless Steel

Stainless steel is called “stainless” because of its resistance to rust. Steel contains iron and carbon in certain percentages: adding the element chromium transforms it from steel to stainless steel. Starting with these three basic elements, metallurgists have created a huge range of stainless steels. Types of metals in the

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Steel pipe scaffolding used during colosseum restoration

Steel Pipe: An Introduction

Steel pipes are cylindrical tubes made from steel that are used many ways in manufacturing and infrastructure. They’re the most utilized product made by the the steel industry. The primary use of pipe is in the transport of liquid or gas underground—including oil, gas, and water. However, pipes of varying

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A glowing crucible of molten iron is being cast in a foundry

Ductile Iron vs. Cast Iron

When choosing an iron alloy for a casting, a metallurgist considers the budget, required mechanical properties, and post-casting steps like machining and heat treatment. These requirements decide what alloy to use. These days, the biggest choice is between ductile iron vs. cast iron. Technically, “cast iron” suggests iron alloys that

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A foundry worker in a silver heat suit ladles flaming molten metal from a crucible

Globalization of Production

Reliance Foundry’s history spans the rise and fall of manufacturing in the West. From boom times through the 1920s, to decline during the globalization of production, the business of metal casting is closely tied to larger economic trends. The 1995 book “Fire in the Blood” is a detailed look at

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Detectable warning plate with patina

Stages of Rust

As a material that satisfies tough, industrial requirements and offers appealing aesthetics, metal is used for products everywhere. Metals boast resilience and strength in heavy-duty applications and hardscape supplies. In infrastructure, metal can be styled in versatile ways to blend in with both the traditional and contemporary. When high-quality new

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A group of foundry workers wearing goggles stand around a ladle full of molten metal

Business Success: Saved through Innovation

Neither Brent nor Brad Done saw themselves becoming foundry men. Reliance Foundry had always been in their lives: the factory was a hot, smelly, dirty place that was equal parts proud family legacy and tough taskmaster. Their grandfather, Fred, had left the foundry to his children Brian and Barry. A

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Stainless steel conveyer belt made of interlocking segments shows some signs of corrosion

Maintaining your Stainless Steel

Stainless steel contains carbon, iron, and chromium. This chemistry, along with polishing and passivation steps in manufacturing, encourages the alloy to develop a chromium oxide layer. This layer is what gives the metal its prized rust resistance. Yet chromium oxide is itself a product of corrosion, a quick-forming “passive film”

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A stainless steel bollard in front of an outdoor walkway

Metal Passivation

Many metals are vulnerable to corrosion when exposed to air and water. Corrosion can cause metal stress and part failure, so metallurgists seek ways to defeat it. One such method is metal passivation, a lesser-known method of corrosion-proofing a surface that uses a thin chemical layer as a seal. Passivation

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