Alloy 40

Designation

Name	The value
Designation GOST Cyrillic	40
Designation GOST Latin	40
Transliteration	40
By chemical elements	40

Description

Alloy 40 is applied: for rolled metal production, manufacturing of ingots and semifinished products and the manufacture of parts of special equipment, parts of aircraft and instrumentation.

Standards

Name	Code	Standards
Sheets and strips	В53	GOST 23755-79, TU 1-5-357-75
Non-ferrous metals, including rare, and their alloys	В51	OST 1 92077-91, TU 1-5-453-78

Chemical composition

Standard	C	Si	Fe	N	Al	V	Ti	O	Zr
OST 1 92077-91	≤0.07	≤0.12	≤0.25	≤0.04	1.5-3.5	0.5-2.5	Rest	≤0.14	0.3

Ti is the basis.
According to OST 1 92077-91 the total allowable content of Cu + Ni ≤ 0.10%, including Ni ≤ 0.08%. The amount of other impurities (not listed in the table, including copper and nickel) ≤ 0.30%. The content of hydrogen in ingots should be ≤ 0.006%. Addition of modifying additives in an amount of ≤ 0.003% is allowed. The alloy modified with boron has an additional index "B".

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d	y, %	KCU, kJ/m²
Sheet and plate annealed in delivery condition on the other 1-5-357-75. The bending angle a technology preview for sheets up to 30 mm is 120°
0.3-0.7	-	≥451	≥40	-	-
0.7-1.8	≥392	≤638	≥30	≥50	-
1.8-6.5	≥392	≤638	≥23	≥50	-
12-20	≥392	≤638	≥16	≥40	≥981
20-30	≥392	≤638	≥14	≥25	≥981
30-50	≥392	≤638	≥12	≥25	≥784
50-100	≥392	≤638	≥10	≥20	≥687
6.5-10	≥392	≤638	≥20	≥40	-
Plate in the delivery condition according to GOST 23755-79. Annealing (samples transverse)
11-20	-	≤635	≥16	≥30	≥784

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
d	Elongation after rupture
y	The relative narrowing
KCU	Toughness