Name	Code	Standards
Wire from nonferrous metals and their alloys	В74	GOST 14838-78, OST 1 92005-2002, OST 4.021.101-92, TU 1-9-176-87
Non-ferrous metals, including rare, and their alloys	В51	GOST 4784-97, OST 1 92014-90
Bars and shapes	В52	OST 1 92093-83

Chemical composition

Standard	Mn	Cr	Si	Fe	Cu	Al	Ti	Zn	Mg
OST 1 92014-90	≤0.2	-	≤0.5	≤0.5	2.2-3	Rest	≤0.1	≤0.1	0.2-0.3
GOST 4784-97	≤0.2	≤0.1	≤0.8	≤0.7	2.2-3	Rest	-	≤0.25	0.2-0.5

Al is the base.
According to GOST 4784-97 the chemical composition is given for alloy D18. Mass fraction of each other impurity (not regulated) ≤ 0.05%, total mass fraction of other impurities ≤ 0.15%.
According to OST 1 92014-90 the chemical composition is given for alloy D18. Mass fraction of each other impurity (not regulated) ≤ 0.05%, total mass fraction of other impurities ≤ 0.10%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	HB, MPa
Wire. Quenching + Aging
	≥170	≥300	≥24	≥50	≥70
Wire. Annealing
	≥60	≥160	≥25	-	-

Description mechanical marks

Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
HB	Brinell hardness number

Physical characteristics

Temperature	Е, HPa	r, kg/m³	R, Mr. · m
20	71	2740	39

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Alloy D18 (1180)

Designation

Description

Note

Standards

Chemical composition

Mechanical properties

Description mechanical marks

Physical characteristics

A description of the physical symbols

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