Learn More About The Type of Material Composition of Flatware

We use AISI type 304 for the spoon and fork, and AISI type 420 stainless steel for the knife.

Below are the explanation of each materials characteristics appropriate for each application.

 
AISI Type 304 Stainless Steel
Component Wt. %
C Max 0.08
Cr 18-20
Fe 66.345-74
Mn Max 2
Ni 8-10.5
P Max 0.045
S Max 0.03
Si Max 1
    Commonly referred as 18/8 and 18/10 stainless steel because the nickel content varies from 8-10.5%. It is austenitic Cr-Ni stainless steel. High ductility, excellent drawing, forming, and spinning property. Essentially non-magnetic, becomes slightly magnetic when cold worked. Low carbon content means less carbide precipitation in the heat-affected zone during welding and a lower susceptibility to inter granular corrosion.   Austenitic class derives its name from Roberts-Austen who first observed its characteristics banded grain structure. Its chief alloys are: chromium, found in amount from 16.0 to 26.0%; and an appreciable nickel content from 6% to 22%. This alloy cannot be heat treated, but responds excellently to cold working. It is generally non-magnetic. In the annealed condition, this alloy is tough, strong, and extremely ductile. Austenite itself is soft and tough and remains ductile even at extreme low temperature.  
AISI Type 420 Stainless Steel  
Component Wt. %
C Max 0.15
Cr 13
Fe 85
Mn Max 0.04
P Max 0.04
S Max 0.03
Si Max 1
    Type 420 is a magnetic, martensitic, heat treatable alloy that is 13% straight chromium. It has excellent creep strength and corrosion resistance. Heat treatments may be applied to develop a very wide range of mechanical properties and hardness.   Corrosion Resistance Type 420 has excellent corrosion resistance to normal atmospheric conditions discoloration or a rusty film may occur under some conditions, but destructive scaling will not occur. It reaches its maximum corrosion resistance when hardened and polished.   Martensitic class is so named for the man, Martens, who first examined metals microscopically. It is referred to as "martensitic" because of its acicular or needle like microstructure in the hardened condition. Its chief alloying agent is chromium, found in amount from 11.5 to 18%. It contains from 0.08 to 1.10% carbon. It is magnetic and responds excellently to heat treating, producing a hard and strong stainless steel.  
Reference: Mat Web Material Property Data