Alloy Х27Ю5А (0Х27Ю5А)

Designation

Name The value
Designation GOST Cyrillic Х27Ю5А
Designation GOST Latin X27Ju5A
Transliteration H27Yu5A
By chemical elements Cr27Al5
Name The value
Designation GOST Cyrillic 0Х27Ю5А
Designation GOST Latin 0X27Ju5A
Transliteration 0H27Yu5A
By chemical elements 0Cr27Al5

Description

Alloy Х27Ю5А used: for the manufacture of wire and ribbon for high temperature industrial and laboratory furnaces.

Standards

Name Code Standards
Tape В34 GOST 12766-67

Chemical composition

Standard C S P Mn Cr Si Ni Fe Al Ti Zr
GOST 12766-67 ≤0.05 ≤0.015 ≤0.02 ≤0.3 26-28 ≤0.6 ≤0.6 Rest 5-5.8 ≤0.3 ≤0.5
Fe is the basis.
According to GOST 12766-67, the chemical composition is given for the alloy grade X27Y5A. The presence in the alloy of residual rare-earth elements, as well as barium and calcium, is not a defective feature.

Mechanical properties

sT|s0,2, MPa σU, MPa d y, %
The mechanical properties of the alloy at short-term burst tests according to GOST 12766-67. Quenching in water from 760 °C (exposure 30 minutes)
≥533 ≥663 ≥15.9 -
≥425 ≥661 ≥24.3 ≥62.5
≥358 ≥606 ≥25.5 ≥53.1
≥355 ≥375 ≥32.9 ≥71.6
- ≥87.3 ≥75.9 ≥97.4
- ≥12.75 ≥127.2 -
- ≥8.83 ≥117.7 -

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d Elongation after rupture
y The relative narrowing

Physical characteristics

Temperature r, kg/m3 R, Mr. · m a, 10-6 1/°C
20 7190 1370-1470 -
1200 - - 150

A description of the physical symbols

Name Description
r Density
l Coefficient of thermal conductivity
С Specific heat

Technological properties

Name The value
Microstructure Ferritic structure.
Magnetic properties Non-magnetic alloy.
Okalinolomatel, heat resistance Onlinetony alloy in an oxidizing atmosphere and in the atmosphere containing sulfur and sulfur compounds; is prone to sagging at high temperatures.
Operating temperature The working temperature of heating element: the Optimum 1250 °C, maximum 1300 °C.