Alloy PT-1M

Designation

Name	The value
Designation GOST Cyrillic	ПТ-1М
Designation GOST Latin	PT-1M
Transliteration	PT-1M
By chemical elements	ПTe-1Cu

Description

Alloy PT-1M used: for the manufacture of ingots and semi-finished products, cold-drawn pipes, parts for aircraft and instrumentation special purpose.

Standards

Name	Code	Standards
Steel pipes and fittings to them	В62	GOST 21945-76, GOST 22897-86, TU 14-3-161-73
Non-ferrous metals, including rare, and their alloys	В51	OST 1 92077-91, TU 1-5-132-78
Tubes of non-ferrous metals and alloys	В64	TU 14-3-615-77, TU 14-3-1913-93, TU 5.961-11774-2001, TU 14-3-820-79

Chemical composition

Standard	C	Si	Fe	N	Al	Ti	O	Zr
OST 1 92077-91	≤0.07	≤0.1	≤0.2	≤0.04	0.2-0.7	Rest	≤0.12	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".
For pipes of group A in accordance with GOST 21945-76, the maximum mass fraction of hydrogen in the alloy is set to 0.006%.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
The billet according to TU 1-5-132-78. Annealing
Образец 15х15	≥245	343-490	≥22	≥45	≥1220
Pipe seamless cold-rolled and cold-drawn, heat-treated in the delivery condition according to GOST 22897-86 (longitudinal samples)
-	≥216	343-568	≥27	-	-
The billet according to TU 1-5-132-78. Annealing
Образец 15х15	≥157	≥216	-	-	-
Pipe seamless cold-rolled and cold-drawn, heat-treated in the delivery condition according to GOST 22897-86 (longitudinal samples)
-	≥157	≥225	-	-	-
Pipe the seamless hot-rolled, heat-treated in the delivery condition according to GOST 21945-76
	≥245	343-539	≥24	≥47	≥880

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
KCU	Toughness