1.4307
Data sheet grade 1.4307 / AISI 304L
X2CrNi18-9
Austenitic corrosion-resistant stainless steel
Brief description
The material 1.4307 or AISI 304L differs from the material 1.4301 due to its significantly reduced carbon content. Nowadays, however, the two materials are generally used as 1.4301/1.4307 is produced with double certification. The double certified material 1.4301/1.4307 can be used if only 1.4301 is required. Conversely, however, this is only possible to a very limited extent and requires prior examination.
Standards and nomenclature
| EN | |
|---|---|
| DIN | X2CrNi18-9 |
| AISI | 304L |
| US | S30403 |
| EN | |
|---|---|
| DIN | X2CrNi18-9 |
| AISI | 304L |
| US | S30403 |
Chemical composition
| C (carbon) | - | 0,03 |
| Mn (manganese) | - | 2,0 |
| Si (silicon) | - | 1,0 |
| P (phosphorus) | - | 0,045 |
| S (sulphur) | - | 0,03 |
| Cr (chromium) | 17,5 | 19,5 |
| Ni (nickel) | 8,0 | 10,5 |
| N (nitrogen) | - | 0,1 |
-
-
min.
max.
C
(carbon)
-
0,03
Mn
(Manganese)
-
2,0
Si
(Silicon)
-
1,0
P
(phosphorus)
-
0,045
S
(sulphur)
-
0,03
Cr
(chrome)
17,5
19,5
Ni
(nickel)
8,0
10,5
N
(Nitrogen)
-
0,1
General properties
| Corrosion resistance | |
|---|---|
| Mechanical properties | medium |
| Forgeability | good |
| Weldability | excellent |
| Machinability | medium |
Special properties
Polishable
Suitable for low temperatures
Can be used up to 550°C
Corrosion resistance
The material 1.4307 is resistant to intergranular corrosion. Due to the low carbon content, no chromium carbides are formed and therefore no chromium-depleted zones. In natural environmental media (water, rural/urban environment), this grade exhibits good corrosion resistance, provided there is no salt content or chlorine concentration. (PREN = 17.5 - 21.1)
Mechanical properties
at 20°C
Hardness
HB
≤ 215
Yield point
Rp0,2
N / mm²
≥ 145
Tensile strength
Rm
N / mm²
500 - 700
Elongation
A5,65
≥ 45%
Modulus of elasticity
kN / mm²
200
Forgeability
The forging process involves heating to approx. 1150°C - 1180°C in order to forge in a temperature range of 1180°C - 950°C. This is followed by rapid air or water cooling. This is followed by rapid air or water cooling.
Weldability
The material 1.4307 can be welded well with and without filler metal. Heat treatment after welding is not normally necessary.
Markets & Applications
Food processing industry
Automotive industry
Chemical and petrochemical industry
Valve industry
Apparatus and vessel construction
Construction industry
Mechanical engineering
Decorative applications
Aerospace industry
Physical properties
at 20°C
Density
kg/dm³
7,9
Electrical
Resistance
(ohm) mm²/m
0,73
Magnetisability
low
Thermal conductivity
W/m K
15
Specific
Heat capacity
J/kg K
500
Processing
| Cold forming | |
|---|---|
| Cold heading | Yes |
| Polishability | Yes |
| Open-die and closed-die forging | Yes |
| Machining | Yes |
Thermal treatment
| Solution annealing | |
|---|---|
| Hot forming | 1200 - 900°C (cooling: air) |
| Solution annealing | |
|---|---|
| Hot forming | 1200 - 900°C (cooling: air) |
Frequently asked questions
Important note
TEAM EDELSTAHL operates purely as a trading company without technical staff. As a result, we cannot and must not provide materials consulting.
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.
