2.4632
Data sheet material 2.4632 / Alloy 90
NiCr20Co18Ti
Nickel-chromium-cobalt alloy
Brief description
The material 2.4632 or Alloy 90 is a nickel-chromium-cobalt alloy, reinforced with titanium and aluminium additives. This material is characterised by high creep strength at temperatures up to approx. 920°C.
Standards and nomenclature
| EN | |
|---|---|
| DIN | NiCr20Co18Ti |
| AISI | Alloy 90, NIMONIC® 90 |
| US | N07090 |
| EN | |
|---|---|
| DIN | NiCr20Co18Ti |
| AISI | Alloy 90, NIMONIC® 90 |
| US | N07090 |
Chemical composition
| Ni (nickel) | Rest | Rest |
| Cr (chromium) | 18,0 | 21,0 |
| Fe (iron) | - | 1,5 |
| C (carbon) | - | 0,13 |
| Mn (manganese) | - | 1,0 |
| Cu (copper) | - | 0,20 |
| Co (Cobalt) | 15,0 | 21,0 |
| Ti (titanium) | 2,0 | 3,0 |
| Al (aluminium) | 1,0 | 2,0 |
| Si (silicon) | - | 1,0 |
| B (boron) | - | 0,02 |
| S (sulphur) | - | 0,015 |
| Zr (Zirconium) | - | 0,15 |
-
-
min.
max.
Ni
(nickel)
Rest
Rest
Cr
(chrome)
18,0
21,0
Fe
(iron)
-
1,5
C
(carbon)
-
0,13
Mn
(Manganese)
-
1,0
Cu
(copper)
-
0,20
Co
(Cobalt)
15,0
21,0
-
-
min.
max.
Ti
(Titanium)
2,0
3,0
Al
(aluminium)
1,0
2,0
Si
(Silicon)
-
1,0
B
(boron)
-
0,02
S
(sulphur)
-
0,015
Zr
(Zirconium)
-
0,15
-
-
-
-
Special properties
High creep strength up to approx. 920°C
Good corrosion and oxidation resistance at high temperatures
Mechanical properties
at 20°C
Yield point
Rp0,2
N / mm²
≥ 685
Tensile strength
Rm
N / mm²
≥ 1200
Elongation
A5,65
≥ 16.5%
Modulus of elasticity
kN / mm²
230
Weldability
The material 2.4632 can be welded well using conventional welding processes. For thicknesses up to approx. 5 mm, TIG and MIG provide satisfactory results. Above this thickness, microcracks can occur in both the welding zone and the heat-affected zone. The workpiece should be welded in a stress-free, metallically bright and dirt-free condition and Alloy 90 should be in a solution-annealed condition. Annealing colours should be removed directly after welding, i.e. while still warm, using a stainless steel brush. A final heat treatment after welding provides optimum properties.
Physical properties
Density
at 20°C
kg/dm³
8,18
Electrical
Resistance at 20°C
(ohm) mm²/m
1,18
Melting range
1310 - 1370°C
Thermal conductivity
at 20°C
W/m K
11,5
Specific
Heat capacity
at 20°C
J/kg K
446
Markets & Applications
Aerospace
Gas turbines
Environmental technology
Frequently asked questions
Important note
TEAM EDELSTAHL operates purely as a trading company without technical staff. Consequently, we are not authorised to provide material consulting services.
The above values and information on the properties and/or usability of the material are purely informative. This information is based on the experience of the manufacturer and TEAM EDELSTAHL. All information is without guarantee. Misprints, errors and changes excepted.
