What are the differences between Grade 316/L/L and Grade 304/L/L Stainless Steel Bars

The basic and most prominent difference between Grade 316/L and Grade 304/L stainless steel bar is their chemical composition. Type 304/L stainless steel consists of 18% chromium and 8% nickel. However, type 316/L contains additional 2% molybdenum along with 16% chromium and 10% nickel.

316 stainless steel bar

Differences in the properties of Grade 316/L and Grade 304/L Stainless Steel Bars:

Type 316/L and Type 304/L stainless steel differ from each other in the following ways:

  • Because of the presence of molybdenum, type 316/L stainless steel shows better resistance to corrosion as compared to type 304/L especially in briny, brackish sea water.
  • Type 316/L stainless steel is resistant to sulfuric acid only when it is at low concentration, whereas type 304/L is resistant to sulfuric acid even when it is in high concentration.
  • Type 316/L shows better resistance to phosphoric acid as compared to type 304/L stainless steel.
  • Grade 304/L stainless steel has greater capability than grade 316/L to break down and absorb energy without disintegrating.
  • Tensile strength and yield strength of type 304/L stainless steel bars is more than that of type 316/L in their annealed condition.
  • Type 316/L stainless steel shows better resistance to corrosion caused by de-icing salts as compared to type 304/L steel. 

Differences in the Usage of Grade 316/L and Grade 304/L Stainless Steel Bars

The applications of these two types differ based on their physical and chemical properties. Because of their rather malleable nature, grade 304/L stainless steel bars are used in the manufacture of dippers, pipeline buckets, chemical storing tanks, and dye storing tanks. Wherein the corrosion resistant nature of type 316 stainless steel bar makes them ideal for marine vessel and related gear (except fasteners).

Based on the specifications and requirements of your final product, you should pick the most suitable type of stainless steel bar.

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