Searching for special ally steel
Searching for special ally steel
(OP)
Hello,
I am searching for a steel alloy which should have nearly the same thermal expansion coefficient as aluminium alloy (--> alpha = 22.10-6 / °C ).
- Does anyone know a supplier and/or steel center service ?
- In which applications are used such a steel alloy ?
Thank you very much for your help.
All the best,
DVE
I am searching for a steel alloy which should have nearly the same thermal expansion coefficient as aluminium alloy (--> alpha = 22.10-6 / °C ).
- Does anyone know a supplier and/or steel center service ?
- In which applications are used such a steel alloy ?
Thank you very much for your help.
All the best,
DVE





RE: Searching for special ally steel
James Kelly
www.rolledalloys.com
RE: Searching for special ally steel
Hadfield’s Manganese Steel is still used extensively (with minor alloying changes as in the various ASTM A128 Grades) due to its high toughness, ductility, high work-hardening capacity and good resistance to wear. It is particularly useful for severe service that combines abrasion and heavy impact as in power shovel buckets and teeth, railway uses, rock crushing, etc.
Austenitic manganese steels are typically cast to shape (difficult to machine due to toughness and work hardening). Also, it is normally water quenched after solutionizing in order to yield finer austenite grains and precipitated carbides. It is not normally used above ~260oC longterm (or more than 1 hour at 425oC) due to carbide precipitation and austenite transformation [probably less relevant if originally air cooled]. It is considerably more ductile than ferritic steels at sub-zero temperatures, e.g., 12.3% elongation at -150oC for a 1.4%, 12% Mn steel.
– “Austenitic Manganese Steel,” pp. 568-588 in Metals Handbook, 9th Edn., vol. 3 (1980).
RE: Searching for special ally steel
For wear resisting applications should I use it:-
1) hot rolled and quenched
or
2) hot rolled and air cooled
PeterCharles
RE: Searching for special ally steel
cooling is used. For such grades about 4% Ni will be added in addition to 12-13%Mn.