Stainless Steel

303

Grade 303 stainless steel is the primary “300-Series Stainless Steel” referenced in our catalog, but we may substitute grade 304 for some products based on material-size availability. Like the other 300-series stainless steels, Grade 303 provides excellent corrosion resistance and is essentially non-magnetic, but cannot be heat treated. It offers excellent tensile strength, but lesser yield strength consistent with its high ductility and toughness. Added Sulphur and Phosphorus enhance free-machining qualities to yield smooth machined surfaces and tight tolerances, especially suited for threaded parts. All Carr Lane Mfg. stainless-steel items undergo a passivation process after machining to maximize corrosion resistance.


304

Also known as “18/8”, because of its 18% Chromium and 8% Nickel content, this stainless steel is very similar to 303, but is slightly more corrosion resistant in some environments – due to the absence of Sulphur and Phosphorus. All Carr Lane Mfg. stainless-steel items undergo a passivation process after machining to maximize corrosion resistance.


316

Similar to 303 and 304 stainless steel, but with the addition of molybdenum as an alloying element to prevent specific forms of corrosion. Also known as “Marine-Grade” stainless, 316 offers significantly better corrosion resistance in and around “salt-water” environments. All Carr Lane Mfg. stainless-steel items undergo a passivation process after machining to maximize corrosion resistance.


17-4PH

This unique stainless steel combines the excellent corrosion resistance of 300-series stainless steels with the excellent hardenability, high strength, and toughness of 400-series stainless steels. 17-4PH contains much less nickel than 300-series stainless steels, and is magnetic. This material is frequently employed by Carr Lane Mfg. for applications where material strength, hardness, and abrasion resistance are the top priorities. In nearly every application, this material is through hardened, which is capable of achieving a Rockwell “C” hardness of 40-44. All Carr Lane Mfg. stainless-steel items undergo a passivation process after machining to maximize corrosion resistance.


440C

Grade 440C stainless steel is a high-carbon steel which, after heat treatment, can attain the greatest hardness, wear resistance, and strength of any standard stainless alloy. 440C stainless contains high chromium but no nickel, offers moderate corrosion resistance, and is magnetic. Capable of being heat treated to a hardness of more than 58 on the Rockwell “C” scale, this very tough material is used for applications that prioritize wear resistance to retain maximum dimensional accuracy over time. 440C is expensive material that is difficult to machine, so it is used only in applications where 17-4PH does not provide enough hardness. All Carr Lane Mfg. stainless-steel items undergo a passivation process after machining to maximize corrosion resistance.