1.4749
Data sheet material 1.4749 / AISI 446
X10CrAlSi18
Ferritic heat-resistant chrome steel
Brief description
The material 1.4749 is a ferritic, heat-resistant chromium steel with excellent resistance to sulphur-containing reducing gases. Material 1.4749 is also characterised by good resistance to oil ash corrosion as well as molten copper, lead and tin.
Standards and nomenclature
| EN | |
|---|---|
| DIN | X18CrN28 |
| AISI | 446 |
| US | S44600 |
| EN | |
|---|---|
| DIN | X18CrN28 |
| AISI | 446 |
| US | S44600 |
Chemical composition
| C (carbon) | 0,15 | 0,20 |
| Mn (manganese) | - | 1,0 |
| Si (silicon) | - | 1,0 |
| P (phosphorus) | - | 0,040 |
| S (sulphur) | - | 0,015 |
| Cr (chromium) | 26,0 | 29,0 |
| N (nitrogen) | 0,15 | 0,25 |
-
-
min.
max.
C
(carbon)
0,15
0,20
Mn
(Manganese)
-
1,0
Si
(Silicon)
-
1,0
P
(phosphorus)
-
0,040
S
(sulphur)
-
0,015
Cr
(chrome)
26,0
29,0
N
(Nitrogen)
0,15
0,25
Special properties
Heat resistant
Scale resistant up to 1000°C in air
Mechanical properties
at 20°C
Hardness
HB
≤ 212
Yield point
Rp0,2
N / mm²
≥ 280
Tensile strength
Rm
N / mm²
500 - 700
Elongation
A5,65
≥ 15%
Modulus of elasticity
kN / mm²
200
Markets & Applications
Apparatus and mechanical engineering for high-temperature applications
Waste incineration
Industrial furnace construction
Physical properties
at 20°C
Density
kg/dm³
7,7
Electrical
Resistance
(ohm) mm²/m
0,7
Magnetisability
available
Thermal conductivity
W/m K
17
Specific
Heat capacity
J/kg K
500
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.
