Alloy ВАЛ12 used: for the manufacture of a chill casting and liquid forging of high-strength corrosion-resistant devices that operate at extreme operating temperatures: long-term up to +250 °C, briefly up to +300 °C.

Note

High strength alloy system Al-Zn-Mg-Cu.

Standards

Name	Code	Standards
Thermal and thermochemical treatment of metals	В04	OST 1 90088-80
Castings, non-ferrous metals and alloys	В84	TU 1-92-98-85

Chemical composition

Standard	Mn	Cr	Si	Fe	Cu	Al	Ti	Zn	Zr	Mg	Be
TU 1-92-98-85	≤0.15	≤0.1	≤0.2	≤0.3	1-1.5	Rest	0.1-0.2	6.5-7.5	0.1-0.2	2-2.8	0.07-0.15

Al is the base.
According to TU 1-92-98-85 the chemical composition is given for the alloy grade VAL12.

Mechanical properties

Section, mm	σ_U, MPa	d	HB, MPa
Casting on the other 1-92-98-85. Separately cast samples
	≥540	≥3	≥120

Description mechanical marks

Name	Description
σ_U	Limit short-term strength
d	Elongation after rupture
HB	Brinell hardness number

Technological properties

Name	The value
Particularities of production of goods	Casting on the other 1-92-98-85 supplied in the hardened and artificially aged condition in the T5 mode in accordance with OST 1 90088-80. For castings manufactured by the method for forming liquid metal, related to the groups control 2 and 2A allowed the testing of mechanical properties directly on the samples cut from the body of a casting from the party. All other requirements for castings according to the technical requirements, acceptance rules, test methods, labelling and packaging must comply with the requirements OCT 1 90021-79.

Alloy ВАЛ12

Designation

Description