Steel Knowledge

CIVMATS aims to disseminate knowledge on stainless steel and super alloy materials. Whether you are interested in knowing the ABC of stainless steel 304 or 316L or want to dive deeper into Hastelloy families.

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The difference among coupling, union and nipple

Coupling is a short tube, also called an outer joint; it is a commonly used accessory for industrial pipe connections. The forged coupling is formed by heating and forging with a steel ingot or a round bar, and then machined on the lathe to make the ...

How to Calculate the Theoretical Weight of 300 Series Stainless...

Stainless Steel Round Pipes
Formula: (outer diameter - wall thickness) × wall thickness (mm) × length (m) × 0.02491
E.g.: 114mm (outer diameter) × 4mm (wall thickness) × 6m (length)...

What is Surgical Stainless Steel? Where to Buy it?

Surgical stainless steel is also known as medical stainless steel. When increasing chemical components hang in the air, for example in some heavily polluted places even 304 will get rusted. For this, some high-end stainless steel will be made by 10%...

How to Identify Stainless Steel Materials 304 and 316

After pickling, the surface color of stainless steel is white and bright. The color of chromium-nickel stainless steel is white and like a jade; The color of chrome stainless steel is white and a bit gray, it also have a weak luster; The color of chromium-...

Where to Buy Stainless Steel? Buy from China!

Since 2001, the apparent consumption of stainless steel in China (Mainland) has grown at an average rate of more than 30% per year, and it ranked first in the world for six consecutive years. In 2005, the output of stainless steel in China (Mainland)...

RESEARCH: Types of Super Duplex

Super duplex stainless steel refers to those duplex steel with PREN >40 ( PREN is abbreviated from “Pitting Resistance Equivalent Number”, a measurement of the corrosion resistance of stainless steel containing nickel), Cr 25%, (high)...

Research: Features of Stainless Steel Chemical...(Ⅱ)

Austenitic-ferrite duplex stainless steel is also a type of stainless steel, which contains two phases of almost equal proportion, i.e., half of austenite and half of ferritic. In the case of low C content, Cr content is 18%-28% and Ni content...

Research: Features of Stainless Steel Chemical...(Ⅰ)

Austenitic Stainless Steel: stainless steel with austenitic microstructure at room temperature. When the steel contains about 18% Cr, 8%-10% Ni, and about 0.1% C, it features a stable austenitic structure. Austenitic chromium-nickel stainless steel...

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