What is 1.4429 (X2CrNiMoN17-13-3)
The material 1.4429 is a stainless, austenitic chromium-nickel-molybdenum steel with a nitrogen addition, characterized by high corrosion resistance and good mechanical properties. The molybdenum content helps to minimize the risk of stress corrosion cracking.
1.4429 is popularly known as AISI 316LN.
International identifiers
Properties of the material 1.4429 (X2CrNiMoN17-13-3)
Properties
| Corrosion resistance | very good |
| Mechanical properties | good |
| Forgeability | good |
| Weldability | excellent |
| Machinability | moderate |
Special properties
- Non-magnetic grade (μr < 1.1)
- Suitable for use at low temperatures
- Usable up to 700°C
Physical properties
| Density in kg/dm3 | 8,0 |
| Electrical resistivity at 20°C in (Ω mm2)/m | 0,75 |
| Thermal conductivity at 20°C in W/(m K) | 15 |
| Specific heat capacity at 20°C in J/(kg K) | 500 |
| Magnetic permeability | not available |
Processing
| Automatic machining | rare |
| Machining | moderate |
| Open-die and closed-die forging | yes |
| Cold forming | yes |
| Cold heading | rare |
| Polishability | yes |
Calculate the weight quickly and easily
Heat treatment 1.4429
Solution Annealing (+AT)
Temperature: 1020–1120 °C
Cooling:
In air
In water
Rapid cooling
Hot Forming
Temperature range: 1200–900 °C
Cooling: In air
Chemical composition of 1.4429
| 1.4429 X2CrNiMoN17-13-3 | C | Si | Mn | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| min. | 16,5 | 2,0 | 11 | 0,12 | |||||
| max. | 0,03 | 1,0 | 2,0 | 0,045 | 0,02 | 18,5 | 3,0 | 14 | 0,22 |
Areas of application for 1.4429
Instructions for use
- Suitable when high corrosion resistance is required.
- Suitable for applications requiring good mechanical properties.
- Suitable for components exposed to corrosive media.
- Suitable for applications requiring high resistance to aggressive media.
- Suitable when good resistance to stress corrosion cracking is required.
- Suitable for components requiring a combination of corrosion resistance and mechanical strength.
Areas of application
- Petroleum and petrochemical industry
- Pharmaceutical industry
- Chemical industry
- Synthetic fiber manufacturing
- Paper manufacturing and processing
- Textile industry
Form of supply and availability of 1.4429
In stock
Immediately available from stock
Form of supply
flat, forged, pre-machined
Sawn blank
The processing with the saw is a mechanical processing of the material, which results in a significantly lower unintended deformation and increased hardness for the existing structure, such as the thermal cutting.
Thus, the machined workpiece has a homogeneous structure even at the edge, which does not change in the continuation of the material.
This circumstance allows immediate finishing of the workpiece with milling or drilling . So it is not necessary to anneal the material or make a similar operation beforehand.
![[Translate to Englisch:]](/fileadmin/user_upload/produkt-fotos/1.4429_Stahlzuschnitt.jpg "[Translate to Englisch:]")
![[Translate to Englisch:]](/fileadmin/user_upload/produkt-fotos/1.4429_Flachstahl.jpg "[Translate to Englisch:]")
![[Translate to Englisch:]](/fileadmin/user_upload/produkt-fotos/1.4429_Stahlblock.jpg "[Translate to Englisch:]")
Frequently asked questions about material 1.4429:
It is an austenitic, acid-resistant and stainless steel that, thanks to the addition of nitrogen (N), offers higher strength with equal or improved corrosion resistance compared to the conventional 1.4404 (AISI 316L).
It offers excellent corrosion resistance (particularly against pitting and crevice corrosion in chloride-containing media such as seawater or chemical solutions) and, thanks to its nitrogen content, has higher mechanical strength than conventional austenitic stainless steels.
It is primarily used in the chemical and pharmaceutical industries, shipbuilding and offshore construction, medical engineering, and for components exposed to aggressive media and requiring high mechanical strength.
More stainless steel
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| 1.4122 | 1.4313 | 1.4410 | 1.4418 |
| 1.4462 | 1.4542 | 17-4PH |
Notice: Specifications contained in following data sheet are provided as a description, liability is excluded!