1.4841
Data sheet material 1.4841 / AISI 314
X15CrNiSi25-21
Austenitic heat-resistant stainless steel
Brief description
The material 1.4841 or AISI 314 is a heat-resistant austenitic chromium-nickel steel, which is characterised by good resistance to oxidation at high temperatures. Furthermore, the material 1.4841 has excellent chemical resistance at temperatures up to 1100°C. This grade is used in temperature ranges in which the material 1.4828 no longer fulfils the requirements.
Standards and nomenclature
| EN | |
|---|---|
| DIN | X15CrNiSi25-21 |
| AISI | 314 |
| US | S31400 |
| EN | |
|---|---|
| DIN | X15CrNiSi25-21 |
| AISI | 314 |
| US | S31400 |
Chemical composition
| C (carbon) | - | 0,20 |
| Mn (manganese) | - | 2,0 |
| Si (silicon) | 1,5 | 2,5 |
| P (phosphorus) | - | 0,045 |
| S (sulphur) | - | 0,015 |
| Cr (chromium) | 24,0 | 26,0 |
| Ni (nickel) | 19,0 | 22,0 |
| N (nitrogen) | - | 0,11 |
-
-
min.
max.
C
(carbon)
-
0,20
Mn
(Manganese)
-
2,0
Si
(Silicon)
1,5
2,5
P
(phosphorus)
-
0,045
S
(sulphur)
-
0,015
Cr
(chrome)
24,0
26,0
Ni
(nickel)
19,0
22,0
N
(Nitrogen)
-
0,11
General properties
| Corrosion resistance | |
|---|---|
| Mechanical properties | medium |
| Forgeability | good |
| Weldability | good |
| Machinability | medium |
Special properties
Heat-resistant (application range 900°C - 1120°C)
Scale resistant up to 1150°C in air
Corrosion resistance
The material 1.4841 has only a low resistance to oxidising and reducing sulphurous gases. This limits its use in such media up to 650°C. In addition, material 1.4841 has only medium resistance to carburising gases or low-oxygen gases with a nitrogen content at temperatures above 900°C. (PREN = 24.0 - 29.3)
Mechanical properties
at 20°C
Hardness
HB
≤ 223
Yield point
Rp0,2
N / mm²
≥ 230
Tensile strength
Rm
N / mm²
550 - 750
Elongation
A5,65
≥ 30%
Modulus of elasticity
kN / mm²
196
Forgeability
Forging takes place in a temperature range of 1175°C - 1000°C with subsequent rapid air or water cooling.
Weldability
The material 1.4841 can be welded using all standard welding processes. Preheating before welding and post-weld heat treatment are not necessary, but this grade tends to form hot cracks. To prevent this, the maximum welding energy should be limited.
Machinability
The material 1.4841 tends - like the 1.4828 - This leads to the formation of carbides during machining. This increases the wear of the cutting tools, which is why high-quality tools should be used. Due to its tendency to work harden and its poor thermal conductivity, care should be taken to ensure adequate cooling. The cutting speeds and cutting depths should be selected accordingly.
Markets & Applications
Equipment engineering for high-temperature applications
Automotive industry
Construction industry
Chemical and petrochemical industry
Chain industry
Industrial furnace construction
Sieves and grids
Cement industry
Physical properties
at 20°C
Density
kg/dm³
7,9
Electrical
Resistance
(ohm) mm²/m
0,90
Magnetisability
not available
Thermal conductivity
W/m K
15
Specific
Heat capacity
J/kg K
500
Thermal treatment
| Hot forming | |
|---|---|
| Solution annealing (+AT) | 1050 - 1150°C (cooling: water or air) |
| Hot forming | |
|---|---|
| Solution annealing (+AT) | 1050 - 1150°C (cooling: water or air) |
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.
