Alloy SPT-2

Designation

Name	The value
Designation GOST Cyrillic	СПТ-2
Designation GOST Latin	CPT-2
Transliteration	SPT-2
By chemical elements	PbПTe-2

Description

Alloy SPT-2 is used: for the manufacture of welding wire with a diameter of 1.6−7.0 mm.

Standards

Name	Code	Standards
Welding and cutting metals. Soldering, riveting	В05	OST 1 90015-77, TU 1-809-232-88

Chemical composition

Standard	C	Si	Fe	N	Al	V	Ti	O	Zr	H
OST 1 90015-77	≤0.05	≤0.1	≤0.15	≤0.04	3.5-4.5	2.5-3.5	Rest	≤0.12	1-2	≤0.003

Ti is the basis.
According to OST 1 90015-77 the chemical composition is given for the alloy of the material of the welding wire. The amount of other impurities is ≤ 0.30%.

Mechanical properties

Section, mm	σ_U, MPa	d
The welding wire in degassed and etched condition delivery
1.6-7	≥667	≥13

Description mechanical marks

Name	Description
σ_U	Limit short-term strength
d	Elongation after rupture