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Alloy H15YU5

Designation

Name The value
Designation GOST Cyrillic Х15Ю5
Designation GOST Latin X15Ju5
Transliteration H15Yu5
The chemical elements Cr15Al5

Description

Alloy H15YU5 used: for the manufacture of resistive elements; electric heating devices.

Note

The heat resisting alloy in an oxidizing atmosphere containing sulfur and sulfur compounds, working with high-alumina ceramics; prone to sagging at elevated temperatures, can not withstand sudden dynamic loads.
Alloy H15YU5 — substitute alloy Х13Ю4.

Standards

Name Code Standards
Classification, nomenclature and general norms В30 GOST 10994-74
Steel alloy wire В73 GOST 12766.1-90
Tapes В34 GOST 12766.2-90
Sectional and shaped rolling В32 GOST 12766.3-90, GOST 12766.4-90, TU 14-11-245-88

Chemical composition

Standard C S P Mn Cr Si Ni Fe Al Ti Ca Ce Zr
GOST 10994-74 ≤0.08 ≤0.015 ≤0.03 ≤0.7 13.5-15.5 ≤0.7 ≤0.6 The rest 4.5-5.5 0.2-0.6 ≤0.1 ≤0.1 ≤0.1
Fe is the basis.
In accordance with GOST 10994-74, the content of calcium and cerium is calculated. When smelting an alloy intended for the production of heating elements, fresh charge materials should be used. Waste of own marks may be used.

Mechanical characteristics

Section, mm σB, MPa d5, % d Brinell hardness number, MPa
Cold-rolled steel strip of 0.2-3.2 mm in the delivery state according to GOST 12766.2-90
≤736 ≥16 - 150-200
Wire cold-drawn heat-treated in the delivery condition according to GOST 12766.1-90 (the value is δ200)
≤740 - ≥16 -

Description mechanical marks

Name Description
Section Section
σB Limit short-term strength
d5 Elongation after rupture
d Elongation after rupture

Physical characteristics

Temperature r, кг/м3 R, НОм · м a, 10-6 1/°С С, Дж/(кг · °С)
20 7280 1240-1340 - 480
1000 - - 16 -
800 - - - 770

A description of the physical symbols

Name Description
Е The normal elasticity modulus
l Coefficient of thermal conductivity
R UD. the resistivity
С Specific heat

Technological properties

Name The value
Microstructure Ferritic structure.
Features of heat treatment After heat treatment of cold drawn wire mode: holding at 750 °C 30 min., cooling with the furnace to 150 °C, 48 h exposure, the value of temperature coefficient of electrical resistance of the AU in the temperature range from 20 to 100 °C is equal to 0,4·10-4 1/°C.
Magnetic properties Ferromagnetic alloy.
Vitality Survivability at a temperature of 1150 °C for at least 120 hours.
Vitality of the alloy for heating elements At least 120 hours at a test temperature of 1150 °C. the recommended maximum operating temperature of the heating element from 750 °C at a thickness of 0.2 mm to 1000 °C at a thickness ≥ 6.0 mm.

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