1.4762
Data sheet material 1.4762 / AISI 446
X10CrAlSi25
Ferritic heat-resistant chrome steel
Brief description
The material 1.4762 / AISI 446 or Sicromal 12 belongs to the group of heat-resistant ferritic chromium steels. It has excellent resistance to sulphur-containing gases at high temperatures, especially under reducing conditions. Due to its increased chromium content, the material 1.4762 is more resistant to scaling than 1.4742.
Standards and nomenclature
| EN | |
|---|---|
| DIN | X10CrAlSi25 |
| AISI | 446 |
| US | S44600 |
| EN | |
|---|---|
| DIN | X10CrAlSi25 |
| AISI | 446 |
| US | S44600 |
Chemical composition
| C (carbon) | - | 0,12 |
| Mn (manganese) | - | 1,0 |
| Si (silicon) | 0,7 | 1,4 |
| P (phosphorus) | - | 0,040 |
| S (sulphur) | - | 0,015 |
| Cr (chromium) | 23,0 | 26,0 |
| Al (aluminium) | 1,2 | 1,7 |
-
-
min.
max.
C
(carbon)
-
0,12
Mn
(Manganese)
-
1,0
Si
(Silicon)
0,7
1,4
P
(phosphorus)
-
0,040
S
(sulphur)
-
0,015
Cr
(chrome)
23,0
26,0
Al
(aluminium)
1,2
1,7
Special properties
Heat resistant
Scale resistant up to 1150°C in air
Corrosion resistance
The material 1.4762 is scale-resistant up to approx. 1150°C. Furthermore, this material is resistant to oxidising sulphur-containing gases and sulphur-containing reducing gases.
Mechanical properties
at 20°C
Hardness
HB
≤ 223
Yield point
Rp0,2
N / mm²
≥ 280
Tensile strength
Rm
N / mm²
520 - 720
Elongation
A5,65
≥ 10%
Modulus of elasticity
kN / mm²
220
Weldability
The material 1.4762 can be welded using all standard welding processes. For workpieces with wall thicknesses greater than 3 mm, the workpiece should be preheated to approx. 200°C - 300°C. A high energy density should be avoided to prevent coarse grain formation. If an austenitic filler metal is used, the austenitic weld bead must be covered with a ferritic one.
Markets & Applications
Equipment engineering for high-temperature applications
Chain industry
Mechanical engineering
Industrial furnace construction
Sootblower
Physical properties
at 20°C
Density
kg/dm³
7,7
Electrical
Resistance
(ohm) mm²/m
1,10
Magnetisability
available
Thermal conductivity
W/m K
17
Specific
Heat capacity
J/kg K
500
Processing
| Cold forming | |
|---|---|
| Cold heading | not usual |
| Open-die and closed-die forging | Yes |
| Machining | rare |
Our
Delivery programme
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.
