Alloy ХН45МВТЮБР (EP718)

Designation

Name The value
Designation GOST Cyrillic ХН45МВТЮБР
Designation GOST Latin XH45MBTJuBP
Transliteration HN45MVTYuBR
By chemical elements CrNi45CuВTeAlBeHg
Name The value
Designation GOST Cyrillic ЭП718
Designation GOST Latin EP718
Transliteration EhP718
By chemical elements -

Description

Alloy ХН45МВТЮБР used: for the production of parts and components of special-purpose machinery; parts of aircraft.

Note

High-temperature Nickel-based alloy.

Standards

Name Code Standards
Sheets and strips В23 GOST 19903-74, GOST 19903-90
Bars and shapes В32 GOST 22411-77, TU 14-1-3135-81, TU 14-1-3905-85
Blanks. Of the workpiece. Slabs В31 OST 1 90353-84, OST 1 90401-91, OST 1 90422-92, TU 14-1-1214-75, TU 1-809-823-99
Sheets and strips В33 TU 14-1-1059-74, TU 14-1-1582-75, TU 14-1-1837-76
Tape В34 TU 14-1-3522-82

Chemical composition

Standard C S P Mn Cr Si Ni Fe Al B Ti Mo Nb W Ce Zr
TU 14-1-3905-85 ≤0.1 ≤0.01 ≤0.015 ≤0.6 14-16 ≤0.3 43-47 Rest 0.9-1.4 ≤0.008 1.9-2.4 4-5.2 0.8-1.5 2.5-3.5 ≤0.1 ≤0.02
Ni is the basis.
According to TU 14-1-3905-85 the chemical composition is given for alloys of grades ХН45МВТЮБР-ИД, ХН45МВТЮБР-ПД.
According to TU 14-1-1059-74 the chemical composition is given for alloys of grades ХН45МВТЮБР-ИД (ЭП718-ИД).

Mechanical properties

Section, mm t отпуска, °C sT|s0,2, MPa σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Leaves x/K 0,8-3,0 mm. delivery Condition + aging at 780-830 °C (maintained for 5 h), air cooling + ageing at 700-720 °C (aging 10-16 h) air cooling or delivery Condition + single ageing at 780-830 °C by cooling with the oven up to 400 °C, then air cooling
- 20 - ≥1080 ≥13 - - -
Ring welded at OST 1 90353-84. Heating to 1000-1130°C, exposure for 2-3 hours, quenching in oil + Aging for 5 hours at 780-830 °C, air cooling, aging at 650-730 °C for 16 hours + Okhlazhdenie air
- - ≥685 ≥1130 ≥12 ≥14 ≥343 294-363
Leaves x/K 0,8-3,0 mm. delivery Condition + aging at 780-830 °C (maintained for 5 h), air cooling + ageing at 700-720 °C (aging 10-16 h) air cooling or delivery Condition + single ageing at 780-830 °C by cooling with the oven up to 400 °C, then air cooling
- 700 - ≥780 ≥7 - - -
Ring welded at OST 1 90353-84. Heating to 1000-1130°C, exposure for 2-3 hours, quenching in oil + Aging for 5 hours at 780-830 °C, air cooling, aging at 650-730 °C for 16 hours + Okhlazhdenie air
- - ≥620 ≥980 ≥7 ≥8 ≥176 -
Leaves x/K 0,8-3,0 mm. Without heat treatment - as supplied
- - ≥980 ≥30 - - -
Bars hot rolled (15-55 mm) and iron (60-160 mm). Tempering: heating to 1000-1130 °C, exposure for 2-3 hours, cooling in oil + aging at 780-830 °C for 5 hours, air cooling + ageing at 650-730 °C for 16 hours, air cooling
- ≥685 ≥1130 ≥12 ≥14 ≥340 294-363

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
y The relative narrowing
KCU Toughness
HB Brinell hardness number