1.4529
Data sheet material 1.4529 / AISI 926
X1NiCrMoCuN25-20-7
Super austenitic corrosion-resistant stainless steel
Brief description
Due to its high number of alloying elements, the material 1.4529 or AISI 926 has excellent resistance to numerous organic and inorganic acids. Due to its high molybdenum content, this grade also offers good resistance to stress corrosion cracking and pitting.
Standards and nomenclature
| EN | |
|---|---|
| DIN | X1NiCrMoCuN25-20-7 |
| AISI | 926 |
| US | N08926 |
| EN | |
|---|---|
| DIN | X1NiCrMoCuN25-20-7 |
| AISI | 926 |
| US | N08926 |
Chemical composition
| C (carbon) | - | 0,02 |
| Mn (manganese) | - | 1,0 |
| Si (silicon) | - | 0,5 |
| P (phosphorus) | - | 0,030 |
| S (sulphur) | - | 0,010 |
| Cr (chromium) | 19,0 | 21,0 |
| Ni (nickel) | 24,0 | 26,0 |
| Mo (molybdenum) | 6,0 | 7,0 |
| N (nitrogen) | 0,15 | 0,25 |
| Cu (copper) | 0,5 | 1,5 |
-
-
min.
max.
C
(carbon)
-
0,02
Mn
(Manganese)
-
1,0
Si
(Silicon)
-
0,5
P
(phosphorus)
-
0,030
S
(sulphur)
-
0,010
-
-
min.
max.
Cr
(chrome)
19,0
21,0
Ni
(nickel)
24,0
26,0
Mo
(Molybdenum)
6,0
7,0
N
(Nitrogen)
0,15
0,25
Cu
(copper)
0,5
1,5
General
Properties
| Corrosion resistance | |
|---|---|
| Mechanical properties | good |
| Forgeability | medium |
| Weldability | good |
| Machinability | medium |
Special
Properties
Polishable
Can be used up to 400°C
Corrosion
Consistency
The material 1.4529 is resistant to intergranular corrosion in the as-delivered condition and after welding. This grade can be used in chloride-containing or halogen-contaminated media, sulphuric and phosphoric acid and seawater. Due to its increased molybdenum content, the material 1.4529 offers better resistance to crevice corrosion and pitting corrosion than the material 1.4539. (PREN = 41.2 - 48.1)
Mechanical properties
at 20°C
Hardness
HB
≤ 250
Yield point
Rp0,2
N / mm²
≥ 300
Tensile strength
Rm
N / mm²
650 - 850
Elongation
A5,65
≥ 40%
Modulus of elasticity
kN / mm²
195
Forgeability
The forging process involves slow heating to approx. 1150°C - 1180°C in order to forge in a temperature range of 1180°C - 950°C. This is followed by air or water cooling. This is followed by air or water cooling.
Weldability
The material 1.4529 can be welded using all standard welding processes. However, it should be welded with filler material, as hot cracking can occur if this is not used. Nickel alloys or duplex materials (1.4462) can be used. However, the filler metals cause the corrosion properties of the weld seam to differ from those of the base material.
Markets & Applications
Apparatus engineering
Construction industry
Chemical and petrochemical industry
Energy technology, onshore and offshore
Pharmacy
Shipbuilding
Environmental technology (flue gas desulphurisation)
Physical properties
at 20°C
Density
kg/dm³
8,1
Electrical
Resistance
(ohm) mm²/m
1,0
Magnetisability
not available
Thermal conductivity
W/m K
12
Specific
Heat capacity
J/kg K
450
Processing
| Cold forming | |
|---|---|
| Cold heading | Yes |
| Polishability | Yes |
| Open-die and closed-die forging | Yes |
| Machining | Yes |
Thermal treatment
| Solution annealing (+AT) | |
|---|---|
| Hot forming | 1200 - 950°C (cooling: air) |
| Solution annealing (+AT) | |
|---|---|
| Hot forming | 1200 - 950°C (cooling: air) |
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.
