1.4923
Data sheet material 1.4923
X22CrMoV12-1
Stainless high-temperature chromium steel with added molybdenum
Brief description
The material 1.4923 is a high-temperature-resistant chromium steel and is mainly used for steam turbines and high-temperature-resistant screws. It is characterised by good mechanical properties (yield strength and creep rupture strength).
Standards and nomenclature
| EN | |
|---|---|
| DIN | X22CrMoV12-1 |
| AISI | - |
| US | - |
| EN | |
|---|---|
| DIN | X22CrMoV12-1 |
| AISI | - |
| US | - |
Chemical composition
| C (carbon) | 0,18 | 0,24 |
| Mn (manganese) | 0,4 | 0,9 |
| Si (silicon) | - | 0,5 |
| P (phosphorus) | - | 0,025 |
| S (sulphur) | - | 0,015 |
| Cr (chromium) | 11,0 | 12,5 |
| Ni (nickel) | 0,3 | 0,8 |
| Mo (molybdenum) | 0,80 | 1,20 |
| V (vanadium) | 0,25 | 0,35 |
-
-
min.
max.
C
(carbon)
0,18
0,24
Mn
(Manganese)
0,4
0,9
Si
(Silicon)
-
0,5
P
(phosphorus)
-
0,025
S
(sulphur)
-
0,015
-
-
min.
max.
Cr
(chrome)
11,0
12,5
Ni
(nickel)
0,3
0,8
Mo
(Molybdenum)
0,80
1,20
V
(Vanadium)
0,25
0,35
-
-
-
-
General properties
| Corrosion resistance | |
|---|---|
| Mechanical properties | good |
| Forgeability | good |
| Weldability | good |
| Machinability | medium |
Special properties
Scale resistant up to 600°C
Maximum achievable hardness 590 HV
Corrosion resistance
Due to its low chromium content, the material 1.4923 has a low resistance to corrosion. In natural environmental media (water, rural/urban environment), however, this grade exhibits satisfactory corrosion resistance, provided there is no salt content or chlorine concentration. The material 1.4923 is resistant to water vapour. (PREN = 16.0 - 18.0)
Mechanical properties
at 20°C
Yield point
Rp0,2
N / mm²
≥ 600
Tensile strength
Rm
N / mm²
800 - 950
Elongation
A5,65
≥ 14%
Modulus of elasticity
kN / mm²
200
Forgeability
The forging process initially involves slow heating to 850°C, followed by faster heating to 1150°C - 1180°C. Forging takes place in a temperature range of 1180°C - 950°C. After forging, slow cooling takes place in the furnace or in dry ashes to ensure slow cooling.
Weldability
The material 1.4923 can only be welded if certain precautions are taken. The material should be preheated to approx. 400°C - 450°C before welding. The temperature of the intermediate layers should not fall below 400°C - 500°C. After welding, the material can be soft annealed or tempered immediately. If a tempering treatment is then carried out, the workpiece should be cooled slowly to 100°C - 150°C. Temper annealing takes place for at least 4 hours at 740°C - 780°C after complete martensite transformation. Slow cooling should then be carried out.
Machinability
The machinability is similar to that of comparable structural steels.
Markets & Applications
Apparatus engineering
Pressure vessel
Steam boiler
Nuclear technology
Turbine construction
Physical properties
at 20°C
Density
kg/dm³
7,7
Electrical
Resistance
(ohm) mm²/m
0,60
Magnetisability
available
Thermal conductivity
W/m K
27
Specific
Heat capacity
J/kg K
460
Processing
| Open-die and closed-die forging | |
|---|---|
| Machining | Yes |
| Automated processing | not usual |
| Cold forming | conditional |
| Cold heading | conditional |
Thermal treatment
| Stress-relief annealing | |
|---|---|
| Remuneration (+QT) | |
| Hardening | 1020 - 1070°C (cooling: oil, polymer, air) |
| Tempering | 640 - 740°C (cooling: air) |
| Hot forming | |
|---|---|
| Remuneration (+QT) | |
| Hardening | 1020 - 1070°C (cooling: oil, polymer, air) |
| Tempering | 640 - 740°C (cooling: 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.
