Wire, round, rod 40X13 - 1.4034 - aisi 420
Bars, round, wire of steel of the martensitic class 40X13 consist mainly of iron and chromium. In accordance with GOST 5632−72, comprising 12−14% Cr and 0,35−0,44% carbon. The alloy is doped with elements such as Si, Mn, Ni — 0.6%, phosphorus thousandths of shares. Iron is a residue. Smelted in an open electric arc, induction furnaces. Substitute: 30Ch13.
The percentage of the brand 40X13 (GOST 5632−72)
Steel 40X13 heat-resistant, corrosion-resistant. Bars, round, wire this brand are resistant to soil and atmospheric moisture, slightly aggressive media, plastic, differ considerable tensile strength, but badly welded. They are not subject to deformation under load at t ° to 450 ° C.
Mechanical properties of rolled products t o 20 o C.
|assortment||GOST||σ B||σ T||curing|
|Bars, predetermined strength||18 907−73||590−810||10||Without t / processing|
|Wire||18 143−72||640−880||10−14||— «-|
The σ — limit of short-term strength;
σ T — yield limit for residual deformation;d 5 — elongation at break.
Calibrated rod is made according to the following guests: 7417−75, 8559−75, 8560−78. Polished rod and silverfish — GOST: 955−77 14 18 907−73. Wire: 18 GOST 143−72. Forged bars and forgings — GOST 1133−71. Cold plastic deformation is limited. The temperature of hot deformation range of 1100 — 900 ° C. The rapid heating and cooling of the material may crack. Therefore it recommended preheating pipes 850 ° C and gradual cooling in the furnace. In the manufacture of medical instruments used to quench cooling step in an alkali solution.
Production of measuring instruments and medical springs, household goods, parts of steam generators, compressors, operating at t ° 400−450 ° C in a slightly aggressive environments.
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