A reason why many clients prefer using grade 316L is that the alloy offers ease in welding. The modification with regards to lowering the carbon content is what helps ease the welding process. Although structurally, the alloy of Stainless Steel 316L Fasteners tends to be weaker than grade 316, most manufacturers increase the content of nitrogen substantially in its alloy. Because of this substantial addition of nitrogen, the austenite structure is stabilized and the toughness and tensile strength properties of the UNS s31603 washers almost rise to the level of regular alloy 316.
Stainless Steel 316L Fasteners
Moreover, the resistance of the alloy to pitting also increases, on account of the content of nitrogen. Most other corrosion resistance properties of grade 316L remain the same as grade 316. For instance, the resistance of the 316L Stainless Steel screws to not only atmospheric corrosion but also moderately oxidizing as well as reducing environments is similar to grade 316. This holds true for the SS 316L Stud bolts, even when exposed to polluted marine atmospheres.
Since the alloy used to produce fasteners has excellent resistance to intergranular corrosion, the SS 316L nut bolt can be used in an as-welded condition. The mechanical properties of grade 316 such as its excellent tensile strength and toughness are seen even at extremely low temperature settings. Therefore the SS 316L threaded rod is well noted for being used at cryogenic temperatures.
SS 316L threaded rod Chemical Composition Standard
C
Si
Mn
P
S
Mo
Cr
Fe
Ni
0.035 max
1.0 max
2.0 max
0.045 max
0.030 max
2.00 - 3.00
16.00 - 18.00
68.89 min
11.00 - 14.00
Mechanical Characteristics of 316L Stainless Steel screws
Density
Tensile Strength
Melting Point
Elongation
Yield Strength (0.2%Offset)
8.0 g/cm3
Psi – 75000 , MPa – 515
1399 °C (2550 °F)
35 %
Psi – 30000 , MPa – 205
Stainless Steel 316L Fasteners specification format
