Carpenter PremoMet

[swall]

Anyone know anything about this alloy? It is a .40 carbon low alloy steel, 290ksi uts, with 3.8% nickel. I just downloaded the datasheet, but no suggested product applications given.

 

[metengr]

This alloy looks very similar to low alloy high strength, quench and tempered, pressure vessel steel, ASTM A 723, Grade 3. The materials for this specification are used in ASME B&PV Code, Division 2 and 3, high pressure vessels (above 25 Ksi pressure).

 

[TVP]

Cartech envisions it as a lower-cost alternative to Co-containing maraging steels. This press release mentions "high-demand power train components in heavy-duty diesel engines and other commercial transportation and locomotive applications":

http://www.cartech.com/news.aspx?id=3982

 

[swall]

Thanks, TVP. It was interesting to see what their marketing dept had to say. I did find it curious that their spread sheet didn't list 300M as one of the alloys Premomet is targeted at, as the chemistries and mech properties are similar.

 

[CoryPad]

It seems to me that Carpenter's idea was "if 300M is good, let's add more Si, Cr, Mo, and Ni to make it better". Obviously avoiding Co allows them to buy quite a bit of Cr, Mo and Ni to make a high-performance steel.