1.4301
Data sheet grade 1.4301 / AISI 304
X5CrNi18-10
Austenitic corrosion-resistant stainless steel
Brief description
The grade 1.4301 or AISI 304 is the most commonly used chromium-nickel steel. Thanks to its good processing properties, visually appealing appearance and high corrosion resistance, this material is used in numerous areas of application. It differs from the material 1.4307 due to a significantly increased carbon content.
Standards and nomenclature
| EN | |
|---|---|
| DIN | X5CrNi18-10 |
| AISI | 304 |
| US | S30400 |
| EN | |
|---|---|
| DIN | X5CrNi18-10 |
| AISI | 304 |
| US | S30400 |
Chemical composition
| C (carbon) | - | 0,07 |
| Mn (manganese) | - | 2,0 |
| Si (silicon) | - | 1,0 |
| P (phosphorus) | - | 0,045 |
| S (sulphur) | - | 0,030 |
| Cr (chromium) | 17,5 | 19,5 |
| Ni (nickel) | 8,0 | 10,5 |
| N (nitrogen) | - | 0,1 |
-
-
min.
max.
C
(carbon)
-
0,07
Mn
(Manganese)
-
2,0
Si
(Silicon)
-
1,0
P
(phosphorus)
-
0,045
S
(sulphur)
-
0,030
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
Improved machining with special quality
Corrosion resistance
The material 1.4301 is susceptible to intergranular corrosion, which is related to the formation of chromium carbides on the grain boundaries. It has good corrosion resistance in natural environmental media. However, this material grade should not be used in salt and chlorine concentrations, e.g. in seawater or swimming pools. The material is not resistant to intergranular corrosion when welded. (PREN = 17.5 - 21.1)
Mechanical properties
at 20°C
Hardness
HB
≤ 215
Yield point
Rp0,2
N / mm²
≥ 190
Tensile strength
Rm
N / mm²
500 - 700
Elongation
A5,65
≥ 45%
Modulus of elasticity
kN / mm²
200
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. The corrosion resistance is reduced by scale or annealing colours. This is removed by chloride-free chemical or mechanical processes.
Weldability
The material 1.4301 can be welded well with and without filler metal. If the material has a high carbon content, it should be solution annealed. Heat treatment after welding is not normally necessary.
Machinability
The material quality hardens during machining. A large cutting depth must be selected.
Markets & Applications
Apparatus and vessel construction
Valve industry
Automotive industry
Construction industry
Chemical and petrochemical industry
Food industry
Sanitary technology
Physical properties
at 20°C
Density
kg/dm³
7,9
Electrical
Resistance
(ohm) mm²/m
0,73
Magnetisability
Very 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.
