1.4840 / DIN X15CrNi25-20 – AISI 310
| Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Nb |
Oth |
| 1.4840 |
≤0,20 |
1,50-2,50 |
≤2,00 |
0,040 |
0,015 |
24,0-26,0 |
- |
≥75,0 |
- |
Al≤0,30 Cu≤0,50 Fe≤1,00 |
|
AISI No
|
W-Nr-Standart
|
DIN
|
UK
|
USA-UNS
|
1AMS
|
|
310
|
1.4840
|
X15CrNi25-20
|
|
S31000
|
|
AISI 310/310S
It is produced to withstand high temperature in AISI 310 quality. Despite this feature, the material softness and weldability are quite good. It can work continuously at 1150 degrees and corrosion does not occur. It can work intermittently at 1040 degrees. It has excellent toughness like other austenitic materials. AISI 310S quality can withstand high temperatures in both humid and dry environments. The low carbon nature of AISI 310S makes it less resistant to high heat than AISI 310.
CHEMICAL COMPOSITION:
|
AISI
|
C
|
Mn
|
Si
|
P
|
S
|
Cr
|
Mo
|
Ni
|
N
|
|
310
|
min.
max.
|
-
0.25
|
-
2.00
|
-
1.50
|
-
0.045
|
-
0.030
|
24.0
26.0
|
-
|
19.0
22.0
|
-
|
|
310S
|
min.
max.
|
-
0.08
|
-
2.00
|
-
1.50
|
-
0.045
|
-
0.030
|
24.0
26.0
|
-
|
19.0
22.0
|
-
|
CORROSION RESISTANCE: Although the high chromium alloy is normally added to the material for high heat resistance, it also provides good corrosion resistance in aqueous environments. It exhibits excellent corrosion resistance at normal temperatures, and good resistance to oxidation and carburization in high temperature environments. It is based on fuming nitric acid at room temperature, molten nitrate at 425 degrees. Corrosion stress rupture is possible but more durable than AISI 304 and 316.
HEAT RESISTANCE: It shows good resistance to corrosion in temperature environments that occasionally fluctuate from 1040 to 1150 degrees with air temperature. Continuously, it resists well at 1150 degrees. Good resistance to heat fatigue and periodic temperature. It is generally used in environments where sulfur dioxide gas is present. It is not recommended as carbide precipitation occurs continuously at temperatures between 425-860 degrees.
HEAT TREATMENT: The annealing temperature is between 1040-1150 degrees and is rapidly cooled for maximum corrosion. This heat treatment is recommended to be repeated every 1000 hours in environments operating above 650 degrees in order to maintain softness. It cannot be hardened by heat treatment.
WELDING: All standard welding methods are applied. AISI 310 quality is welded with the same quality electrode and wire. It is recommended to be welded with AISI 310S quality electrode and fusion method.
MECHANICAL PROPERTIES:
| AISI |
Tensile Strength (MPa) min
|
Yield Strength 0.2% Proof (MPa) min
|
Elongation (% in 50mm) min
|
Hardness
|
|
Rockwell B (HR B) max
|
Brinell (HB)
max
|
|
310
|
515
|
205
|
40
|
95
|
217
|
|
310S
|
515
|
205
|
40
|
95
|
217
|
PHYSICAL PROPERTIES:
|
AISI
|
Density (kg/m3)
|
Elasticity Coefficient (GPa)
|
Thermal Expansion Coefficient (mm/m/°C)
|
Thermal Conductivity (W/m.K)
|
Specific Heat 0-100°C (J/kg.K)
|
Electric Resistance (nW.m)
|
|
0-100°C
|
0-315°C
|
0-538°C
|
at 100°C
|
at 500°C
|
|
310/S
|
7750
|
200
|
15.9
|
16.2
|
17.0
|
14.2
|
18.7
|
500
|
720
|
USAGE AREAS:
Usage Areas It is another option after AISI 309 and 309S grades that we can choose in heat resistant applications. We can use it in furnace constructions, steam boilers, petroleum facilities, heat exchangers, annealing and melting vessels, heater hangers, apparatus under mechanical stress.
The information given in this data sheet about the condition or availability of the material is not a guarantee for its properties, it only serves as an explanation. The information provided as advice is consistent with our own experience as well as general experience. No guarantee is given for the processing and application results of the products.