SU973659A1 - Steel - Google Patents

Description

(54) STEEL

The invention relates to metallurgy, in particular to the search for high-strength steel steels used for the manufacture of elastic elements and critical parts of various mechanisms.

Known steel 50 HGF Cl, taken for similar chains.

A disadvantage of the known steel is relatively low mechanical properties.

Closest to the proposed technical essence and the achieved effect is Stap G2 composition, wt.%:

Carbon

0.51-0.56

Silicon 0.17-0.37

Manganese 0.9-1.2

Chrome 0.3-0.6

Vanadium 0.07-0.12 Nitrogen 0.02-0.04 Aluminumium 0.03-0.08 Iron Rest

A disadvantage of the known steel is the relatively low mechanical properties, especially at low temperatures.

The purpose of the invention is to increase the mechanical properties, especially at low temperatures.

The goal is achieved by the fact that steel containing carbon; silicon, manganese, xpc, vanadium, nitrogen, aluminum, iron, additionally contains one element from the group t calcium, rare earth metals, zirconium, selenium, in the following ratio of components, wt.%;

0.50-0.65

Carbon 0.40-2.00

Silicon 0.70-1.25

Margshets 0.65-1.20

Chrome 0.01-0.30

Vanadium 0.01-0.05

Nitrogen 0.01-0.10

Aluminous

one item from the group containing:

0.001-0.01

Calcium

Rarebones

0.001-0.05

glut-balls 0.001-0.01

Zirconium 0.001-0.01

Selen Else

Iron

The chemical composition of the studied bottoms, proposed and known 30 starchs are given in table 1.

The properties of the investigated heats of known and described steels after quenching from 870 ° С and tempering at 470 ° С are presented in table 2.

Table

Claims (2)

Claim Carbon-containing steel ,, silicon, manganese, chromium, vanadium, * nitrogen, aluminum, iron, characterized in that, in order to increase the mechanical properties, it additionally contains one element of the group: calcium, rare earth metals, zirconium, selenium, in the following ratio of components, wt.%: Carbon 0.5-0.65 Silicon 0.4-2.00 40 Manganese 0.7-1.25 Chromium 0.65-1.20 Vanadium 0.01-0.30 Nitrogen 0.01-0.05 Aluminum 0.01-0.1 45 one element from the group consisting of: Calcium 0.001-0.01 Rare earth metals 0.01-0.05 Zirconium 0.001-0.01 fifty Selenium 0.001-0.01 Iron Rest Sources information taken into account during the examination 1. GOST 14959-79, steel 50HGF. 2. Copyright certificate of the USSR No. 715637, cl. C 22 C 38/24, 1978.