Excell’s Material Guide: All you need to know

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Excell Metal Spinning’s Material Guide:

All our material capabilities all in one place

This is in an update on our previous material guide dated 2016. This material guide will help you understand our capabilities as a metal spinning business and will help you in your decision making for future projects within your business.

It is important to understand that there are a number of limiting factors which can have an affect on your required dimension. A common example involves certain material thickness resulting in varying limitations with regards to the dimensions of component or finished piece. The diameter can also in turn have limitation on the thickness of the material. Another limiting factor is the material choice itself which will affect both the dimensions and thickness.

Below is a list of materials with their assigned minimum and maximum Diameters and Thicknesses that can be successfully spun within our factory.

MaterialMinimum Diameter (mm)Maximum Diameter (mm)Minimum Thickness (mm)Maximum Thickness (mm)
Aerospace Grade Alloys3022210.91
Aluminium3022210.96
Brass3022210.93
Copper3022210.92.5
Galvanised Steel3022210.74
Hastelloy3022210.91
Inconel3022210.91
Marine Grade Alloys3022210.91
Mild Steel CR43022210.76
Monel3022210.91
Titanium3022210.91
304 Grade Stainless Steel3022210.94
316 Grade Stainless Steel3022210.94
4003 Grade Stainless Steel3022210.94

Understanding these properties will help determine which material is best suited for a specific design. This material guide will help you understand our capabilities as a metal spinning business.

Aluminium – Positives and Negatives

PositivesNegatives
Oxidises quickly creating resistance to corrosion by air, water and chemicals.Requires specialised processes in order to be welded
Easily coloured by anodising and holds paint very well.It is abrasive to tooling
Better conductor of Electricity than copper.It is expensive, even more than steel.
RecyclableProne to severe spring back.
Has the highest strength-to-weight ratio of any metal. 
Great choice for applications avoiding magnetism. 
Lightweight, lighter than steel. 
Inexpensive to Ship 
More Economical than Brass or Steel 

Brass – Advantages and Disadvantages

PositivesNegatives
Its durable. It is an alloy of Copper and ZincBrass with high zinc content is often hard and brittle.
ResilientIf higher copper content it will be susceptible to corrosion.
Great for heavy-duty use.Not as good an electrical conductor as Copper
Can withstand high temperaturesLow melting point
Versatile 
More malleable than Steel or Iron, easily machined 
Good electrical conductor 
Flexible, its properties can be changed when aluminium is added for example 

Copper – Advantages and Disadvantages

PositivesNegatives
High Electrical ConductivityExpensive
High Thermal ConductivityLoses its colour easily due to heating
Great for electrical componentsEasily scratched
Very ductile and malleableCorrodes at a negligible rate in air, water and deaerated acids
High corrosion resistance 
Intrinsic strength 

Galvanised steel – advantages and disadvantages

PositivesNegatives
Sustainable and recyclableDangerous in pipes as it can leech led
Corrosion ResistanceHigh initial costs
Less maintenance – no shrinking or cracking 
Longevity 
Rust Free 

Mild Steel CR1 + CR4 – advantages and disadvantages

PositivesNegatives
Readily availableLow strength-to-weight ratio
Easy to machineRusts
Easy to weldCannot be improved via heat treatment
Low costsLow corrosion resistance

Has this material guide helped? Be sure to share this article with friends and colleagues and let us know your thoughts on twitter by tagging us @ExcellMetalSpin with the hashtag #ExcellInsights. The best tweets will be retweeted to our 7,000+ followers!

Next week we will look into Automated CNC vs Manual methods of manufacturing, especially within Metal Spinning. What’s your preference? Find out next week!

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