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The Knowledge Hub

While Online Metals prides itself in its large portfolio, professional customer service, and impressive 2-day shipping, we also understand that not everyone knows exactly what they need when they arrive at our website. We’ve collected and answered some of the most polarizing material questions, connected with niche experts, and crafted a catalog of essential resources and tools to help you make the best decision. Welcome to The Knowledge Hub by Online Metals!

Top Articles

Aluminum rectangle bars stacked ontop of eachother Aluminum rectangle bars stacked ontop of eachother

Aluminum 6061 vs 7075

Explore the differences in properties of 6061 vs 7075 aluminum and their various applications.

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Industrial metal walk way Industrial metal walk way

7075 T6 vs T73

Different tempers provide different properties and benefits for a variety of applications. Learn more about T6 and T73 temper applications.

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Iron bars being forged in a machine Iron bars being forged in a machine

Hot Roll vs Cold Roll

What is the difference between Hot Rolled and Cold Rolled material? Read more to learn which is right for your project.

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Top Tools

Weight calculator hero image Weight calculator hero image

Weight Calculator

Whether you need to understand a material's weight to meet your project’s needs, understand shipping constraints, or if pickup is feasible, our weight calculator has you covered.

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Melting Points

Working with different metals and curious about their melting points? We have a complete table of both °F and °C to ensure you understand how to reach your desired result.

View Melting Points
Metal tempering in forge Metal tempering in forge

Tempers Guide

Metal tempering is a heat treatment process to gain additional properties within the material.

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