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.
