Martensitic Stainless Steels Category
The least common category of stainless steel alloy. Their corrosion resistance tends to be lower than either ferritic or austenitic alloys, but they have a high hardness. Martensitic stainless steel alloys are often ideal for applications requiring extraordinarily high tensile strength and impact resistance.
typical usage
Grade 420 Stainless Steel
Ferritic Stainless Steels Category
The second most common form of stainless steel after austenitic alloys. As the name implies, ferritic stainless steel is magnetic. These alloys can be hardened through cold working. They also tend to be less expensive because of their reduced nickel content.
typical usage
Grade 430 Stainless Steel, Grade 434 Stainless Steel
Austenitic Stainless Steel Category
The most frequently used types of stainless steels. Austenitic stainless steels tend to have a high chromium content compared to other steel alloys, giving them a higher resistance to corrosion. Another common characteristic of austenitic stainless steel alloys is that they tend to be non-magnetic—though they may become magnetic after cold working.
typical usage
Grade 304 Stainless Steel, Grade 316 Stainless Steel
434 Stainless Steel
Grade 434 stainless steel slightly better for high-temperature applications than 316 stainless, while being tougher than grade 430 stainless. Grade 434 stainless also has excellent pitting resistance compared to 430 grade stainless steel.
typical usage
Automotive trim applications and other exterior environments
431 Stainless Steel
431 is the most corrosion resistant of the martensitic grades. It has excellent tensile and torque strengths and toughness.
typical usage
Laboratory equipment, Marine systems, Pump and propeller shafts, Nuts and bolts
430 Stainless Steel
Stainless steel grade 430 is a non-hardenable steel containing straight chromium, and belongs to the ferritic group of steels. This steel is known for its good corrosion resistance and formability, coupled with practical mechanical properties. Grade 430 also has excellent resistance to nitric attack, which makes it well suited to use in chemical applications.
typical usage
Domestic appliances and decorative trim
420 Stainless Steel
The 420 is a very good corrosion resistant steel and has a good balance between toughness and hardening ability.
typical usage
Shear blades, Needle valves, Surgical equipment, Cutlery
410 Stainless Steel
Grade 410 stainless steels are general-purpose martensitic stainless steels containing 11.5% chromium, which provide good corrosion resistance properties.
typical usage
induction furnaces and casting units
321 Stainless Steel
321 stainless steel is basically from 304 stainless steel. They different by a very very small addition of Titanium. The real difference is their carbon content.
typical usage
aircrafts and exhaust systems
Stainless Steel 316 Turnings
Scrap Stainless Steel 316 turnings are simply by products of machining 316 stainless steel. A turning is the product produced from an type of milling or machining.
typical usage
Milling or machinings
316 Stainless Steel
Scrap 316 stainless steel, is a molybdenum-alloyed steel. The main difference between 304 and 316 stainless steel is 316 SS has the addition of molybdenum. It is typically referred to as “marine grade” and is the second most common austenite stainless steel.
typical usage
Screens for mining, jet engine parts, manifolds, chemical processing equipment, pharmaceutical equipment & heat exchangers, marine propellers.
Stainless Steel 304 Turnings
Scrap Stainless Steel 304 turnings are simply by products of machining 304 stainless steel. A turning is the product produced from an type of milling or machining.
typical usage
Milling or machinings
304 Stainless Steel
304 stainless steel, is the most common type of stainless steel used in the marketplace. The difference between 304 and 316 stainless steel scrap metal is the amount of a molybdenum-alloyed steel present. 304 stainless steel contains between 16 and 24 percent chromium and up to 35 percent nickel—along with small traces of carbon and manganese. 304 stainless steel can experience longer exposure to harsher elements than its 316 stainless steel counterpart without experiencing corrosion.
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