Contemporary heat-treatable steels did not exist or were in their infancy.

For example, tensile strengths up to 1400 N/mm2 can be achieved in heat-treatable alloys.

As a heat-treatable hard coating for hardness, wear and corrosion resistant coatings.

Aluminium and most of the non-heat-treatable and heat-treatable alloys possess good weldability.

Most non-ferrous alloys that are heat-treatable are also annealed to relieve the hardness of cold working.

Conversely, most heat-treatable alloys are precipitation hardening alloys, which produce the opposite effects that steel does.

There are two principal classifications, namely casting alloys and wrought alloys, both of which are further subdivided into the categories heat-treatable and non-heat-treatable.

Most heat-treatable alloys fall into the category of precipitation hardening alloys, including alloys of aluminum, magnesium, titanium and nickel.

Precipitation hardening alloys, such as certain alloys of aluminium, titanium, and copper, are heat-treatable alloys that soften when quenched (cooled quickly), and then harden over time.

Opportunities Available to Participate on Standards Committees on Industrial Electro-heating Equipment, Applications of Statisitcal Methods, and Heat-treatable and Alloy Steels [ 2006-06-28 ] Transport Canada:

Alloy Description: A heat-treatable, deep section hardenable, very high strength Ti alloy possessing good toughness/strength properties, low elastic modulus and elevated resistance to stress and localized corrosion in high temperature sweet and sour brines.