Alloy 36NKHTJU5M (ЭП51)

Designation

Name The value
Designation GOST Cyrillic 36НХТЮ5М
Designation GOST Latin 36HXTJu5M
Transliteration 36NHTYu5M
By chemical elements 36NiCrTeAl5Cu
Name The value
Designation GOST Cyrillic ЭП51
Designation GOST Latin EP51
Transliteration EhP51
By chemical elements -

Description

Alloy 36NKHTJU5M used: for the manufacture of elastic and provocatively elements operating at temperatures up to +350 °C.

Note

Alloy non-magnetic corrosion-resistant dispersion-hardened with a temporary resistance 1375−1765 MN/m2 (140−180 kgf/mm2), with the normal elasticity modulus 196000−206000 MN/m2 (20000−21000 kg/mm2).

Standards

Name Code Standards
Classification, nomenclature and General rules В30 GOST 10994-74
Tape В34 GOST 14117-85
Wire, steel, alloy В73 GOST 14118-85
Bars and shapes В32 GOST 14119-85, TU 14-11-245-88
Blanks. Of the workpiece. Slabs В31 TU 14-1-2554-78
Steel pipes and fittings to them В62 TU 14-3-379-75

Chemical composition

Standard C S P Mn Cr Si Ni Fe Al Ti Mo
GOST 10994-74 ≤0.05 ≤0.02 ≤0.02 0.8-1.2 12.5-13.5 0.3-0.7 35-37 Rest 1-1.3 2.7-3.2 4-6
Fe is the basis.

Mechanical properties

Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % d d10 y, % KCU, kJ/m2 HRC
Cold-rolled steel strip (samples) in the delivery state according to GOST 14117-85. Quenching in water from 965-985 °C + Aging at 700-750 °C (exposure 4 h)
0.1-0.9 - - ≥1230 - ≥4 - - - -
1-2 - ≥930 ≥1270 - ≥4 - - - ≥38
Cold-rolled steel strip as supplied by GOST 14117-85
0.1-2 - - ≥1100 - - - - - -
0.1-0.9 - - 930-1230 - ≥2 - - - -
1-2 - - 930-1230 - ≥3 - - - -
Cold-rolled steel strip as supplied by GOST 14117-85. Quenching in water with 975-1100 °C
0.1-0.9 - - ≤930 - ≥15 - - - -
1-2 - - ≤880 - ≥20 - - - -
Cold-rolled steel strip as supplied by GOST 14117-85. Aging (in the graph, the temperature of leave is specified aging temperature and aging time)
- 700-750, 2-4ч 880-1080 1230-1370 - ≥4 - - - -
- 680-710, 2ч 1180-1370 1370-1520 - ≥2 - - - -
- 680-710, 2ч 1030-1230 1270-1420 - ≥3 - - - -
Cold drawn wire in the delivery state according to GOST 14118-85. Aging at 650-710 °C (exposure 2 hours), air cooling (indicated by the value δ100)
0.3-5 - - ≥1500 - ≥1 - - - -
0.3-5 - - ≥1370 - ≥1 - - - -
Bars and rods, hot-rolled, forged and with special surface finish GOST 14119-85. Quenching in water from 965-985 °C + Aging at 700-750 °C (delay of 2-4 h), air cooling
1-80 - ≥635 ≥1030 - - ≥10 ≥20 ≥290 -
Pipes cold drawn seamless thin-walled and extremely thin-walled for THAT 14-3-379-75. Aging at 675÷720 °C
- - ≥1079 - ≥9 - - - - -
- - ≥1373 - ≥9 - - - - -

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
d5 Elongation after rupture
d Elongation after rupture
d10 Elongation after rupture
y The relative narrowing
KCU Toughness
HRC Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature r, kg/m3
20 7900

A description of the physical symbols

Name Description
Е The normal elasticity modulus
G Modulus of elasticity shear torsion
r Density
l Coefficient of thermal conductivity
R UD. the resistivity
С Specific heat