Stainless Steel 316L 1.4404

Stainless Steel 316L 1.4404

Stainless Steel 316L 1.4404 This data sheet applies to stainless steel 316L / 1.4404 hot and cold-rolled sheets/plates and strip, semi-finished products, rods, rolled wire and profiles as well as seamless and welded tubes for pressure purposes. Application Construction encasement, doors, windows...
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Stainless Steel 316L 1.4404

This data sheet applies to stainless steel 316L / 1.4404 hot and cold-rolled sheets/plates and strip, semi-finished products, rods, rolled wire and profiles as well as seamless and welded tubes for pressure purposes.


Application

Construction encasement, doors, windows and armatures, offshore modules, cisterns and pipes for chemical tankers, production, warehousing and overland transportation of chemicals, food and beverages, pharmacy, synthetic fibre, paper and textile plants and pressure vessels. Due to the low C-content, the resistance to intergranular corrosion is also guaranteed in the welded condition.


Chemical Compositions

Element % Present

Carbon (C)

0.03

Silicon (Si)

1.00

Manganese (Mn)

2.00

Phosphorous (P)

0.045

Sulfur (S)

0.0151)

Chromium (Cr)

16.50 - 18.50

Nickel (Ni)

10.00 - 13.00

Nitrogen (N)

0.10

Molybdenum (Mo)

2.00 - 2.50

Iron (Fe)

Balance


Reference data on some physical properties

Density at 20°C kg/m3 8.0

Thermal Conductivity W/m K at 20°C

15

Modulus of Elasticity kN/mm2 at

20°C

200

200°C

186

400°C

172

500°C

165

Specific Thermal Capacity at 20°C J/kg K

500

Electrical Resistivity at 20°C Ω mm2/m

0.75


Processing / Welding

Standard welding processes for this steel grade are:

TIG-Welding

MAG-Welding Solid Wire

Arc Welding (E)

Submerged Arc Welding (SAW)

Laser Beam Welding


When choosing the filler metal, the corrosion stress has to be regarded, as well. The use of a higher alloyed filler metal can be necessary due to the cast structure of the weld metal. A preheating is not necessary for this steel. A heat treatment after welding is normally is normally not usual. Austenitic steels only have 30% of the thermal conductivity of non-alloyed steels. Their fusion point is lower than that of non-alloyed steel therefore austenitic steels have to be welded with lower heat input than non-alloyed steels. To avoid overheating or burn-though of thinner sheets, higher welding speed has to be applied.


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