huangyhg

formable substitute for maraging 350
i am looking for a material which is weldable and formable (spinning or deep draw) which is available in thin sheet (.025 to .031 inch) which is similar to maraging 350 in uts. any ideas out there? (also a source would be helpful)
as far as i know, this is an impossible request to fulfill. maraging steels essentially have the highest strength of commercially available alloys, especially if you limit the product form to be sheet materials. carbon and alloy steels with high carbon content (spring steels) can be obtained in strip, but the maximum strength levels at thicknesses of ~ 0.6-0.9 mm are only ~ 1800 mpa (< 270 ksi). ph stainless steels (17-4, etc.) and high strain hardening austenitics like type 301 are also limited to less than 280 ksi tensile strength.
perhaps you can provide a little more background on the reasoning for this. is this an existing application? is a 350 maraging steel already being used? why is a change necessary?
no, this is not an existing application. we are doing a weight reduction program on a proposed design. we wish to go as high as possible in uts without encountering problems such as stress cracking. d6ac was a former candidate but does not appear to be totally suitable. the application is in a small ablatively cooled combustion chamber, so thermal problems will not be evident.
why is maraging steel not acceptable? when you say "stress cracking", do you mean stress corrosion cracking?
you could try aermet 310 from carpenter (

__________________
借用达朗贝尔的名言：前进吧，你会得到信心!
[url="http://www.dimcax.com"]几何尺寸与公差标准[/url]