A Simple Guide To Stainless Steel
Understanding Stainless Steel Grades And Their Uses
Stainless steel comprises of iron alloy with a minimum of 10.5% chromium, the chromium produces a thin layer of oxide on the surface of the steel (passive Layer) this prevents corrosion of the surface. By increasing the amount of chromium the more corrosion resistant the stainless steel.
Other metal elements such as Nickel, Molybdenum, Titanium and Copper, along with non-metal additions such as Carbon and Nitrogen are added to enhance formability and strength
It always important to choose the particular grade of stainless steel suited for purpose of use.
A good general rule is 304 Grade for indoor and 316 Grade for outdoor.
AISI 304 Grade, A2 Stainless Steel
Good Corrosion Resistance
Ideal for: Interior Balustrade, Handrail, Internal Door Furniture, Shelving Supports, Interior Wire Rope and Rigging
AISI 316 (Marine) Grade, A4 Stainless Steel
External and Internal Use
Wet and Humid Conditions
Salt Water Environments
Excellent Corrosion Resistance
Ideal for: Exterior Balustrade, Handrail, Garden Trellis Systems, Wire Rope Assemblies, Catenary Wires, Door Furniture, Turnbuckles, Exterior Rigging, Marine Shackles and Hardware
Specialist Stainless Steels
Duplex and 2205 grade stainless steel is ideal for highly corrosive marine environments and offer a higher mechanical strength.