Magnesium bodies

Started Mar 26, 2012 | Discussions thread
Shop cameras & lenses ▾
Leonard Migliore
Forum ProPosts: 12,487Gear list
Re: Price, weight and quantity
In reply to steephill, Mar 27, 2012

steephill wrote:

Titanium alloys are about 4x more expensive than magnesium alloys. And magnesium alloys are 2.5x less dense than titanium alloys so for lowest mass you would go for magnesium.

The amounts involved in camera manufacture are very small so relative material cost is not a major issue. Ease of manufacture and mechanical properties are the important criteria.

Ease of manufacture (or the lack thereof) is a big downside of titanium. It's expensive to cast and very miserable to machine. And it tends to crawl around on you after processing, which is the last thing you want in a camera frame.

Magnesium is readiily die cast and machines like a dream; that's probably why camera designers like it over aluminum, which is about equal in stiffness-to-weight. Its only downside is that it has poor ductility, so that it cracks rather than bends. But a bent camera body is no better than a cracked one.

-- hide signature --

Leonard Migliore

 Leonard Migliore's gear list:Leonard Migliore's gear list
Canon PowerShot G12 Sony Cyber-shot DSC-RX100 III Nikon D300 Nikon AF-S DX Nikkor 16-85mm f/3.5-5.6G ED VR Nikon AF-S DX Nikkor 35mm f/1.8G +8 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow