Type 304LN (UNSS30453/1.4311)
• Toughness: 304LN Stainless steel, has an excellent impact toughness even at sub-zero temperatures.
• Ferrite level: With the very low ferrite level and great resistance to martensitic transformation, 304LN is made to be non-magnetic.
• Pitting resistance: It has a reasonable amount of pitting and crevice corrosion resistance.
• Good weldability: Its reaction to heat makes it easy to weld but a few precautions are needed to avoid solidification cracking.
Description
Type 304L, a typical level of relative magnetic permeability is set around 1.05-1.1 due to the small amount of ferrite existent in the austenitic structure. Completely non-magnetic material is expected to have just a value of 1.0.
304LN Stainless Steel, with the help of a considerably effective upgrade, can achieve a maximum value of around 1.005, which is the lowest practical level of any steel grade. Besides, the stainless steel is quite resistant to transformation to the magnetic martensitic phase which can occur informing or cooling to very low temperatures.
Other names: NIL
Executive Standards:
- UNS ………….. S30453
- ASTM ………… 304LN
- EN ……………. 1.4311
Chemical Properties:
- Carbon ……………………………. 0.030%
- Chromium ………………………… 19%
- Manganese ………………………. 2.0%
- Silicon ……………………………… 1.0%
- Nickel ………………………………. 10%
- Iron …………………………………. Balance
Mechanical Properties:
- Tensile Strength ……………………. 515 (MPa)
- Yield strength ……………………….. 205 (MPa)
- Elongation …………………………… 40% max.
- Hardness …………………………….. 92
Physical Properties:
- Density ………………………………. 8.00g/cc
Key Features: 304LN Stainless Steel is a strengthened type of stainless steel as a result of its increased level of nitrogen.
Product Forms Available: Sheet, foil, flat, square.
Applications: Heat exchangers, nuclear industry, petroleum industry, food industry, fabrication industry, chemical industry.
FAQs:
- What makes the 304LN Stainless Steel different from the Type 304?
304LN steel type is a nitrogen-strengthened version of the stainless steel grade 304. It increases the yield strength of austenitic grades without denting their ductility.
- What is the advantage of the higher nitrogen level in 304LN Stainless steel?
Nitrogen has proven to be useful in improving the corrosion resistance of stainless steel, having closer control over impurities and inclusion content.
- Is the 304LN Stainless steel prone to rust?
As a member of this series of steel products, rust isn’t in the equation.
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