52100

52100 is a high-carbon chromium alloy steel that, because of its versatility, is used in a variety of mechanical applications. In the annealed condition this steel is comparatively easy to machine, yet very high hardness and abrasion resistance can be developed by heat treatment to make the steel particularly suitable for applications requiring extreme wear resistance, such as bearings. 

In addition, 52100 alloy steel can be heat treated to high levels of tensile strength and fatigue strength.

• AMS 6440

• AMS 6444

• ASTM A295

• ASTM A485 (for modified grades)​

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440C is a high-carbon martensitic stainless steel that is AOD, AOD + ESR, or AOD + VAR melted.  It has slightly more carbon than 440A and 440B giving it the highest hardness of any martensitic stainless alloy.  This grade has excellent wear resistance making it perfect as a bearing steel used as ball bearings and bearing races.  It is also readily used as cutlery.

• AMS 5630

• AMS 5880

• AMS 5618

• AMS-QQ-S763

• ASTM A276

• ASTM F899

• Barden SA 1254

• Federal QQ-S-763

• NHBB PES 1.102

• NHBB SM3

• Woodward SP-1197
   

M50 is a bearing steel melted as AOD + ESR, AOD + VAR, or VIM + VAR melt type.  This grade has increased molybdenum which helps improve wear resistance and strength at high temperatures.  This alloy is often used in aerospace bearing applications where good fatigue strength is critically important.

Specification:

• AMS 6490

• AMS 6491

• Bell 299-947-087

• Honeywell EMS 52491

• Honeywell MMS 5003

• Honeywell SC5354

• NHBB PES 1.105

• GE B50TF346 (replaced GE B50TF103)

• GE C50TF146 (replaced GE C50TF56)

• SKF MS-228

• Schaeffler FL-LA2372.5SX

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BG42 is a martensitic stainless steel designed for aerospace structural components and high-performance bearings. It is a double vacuum-melted martensitic stainless high-speed steel designed for critical aerospace structural components and high-performance bearings. The steel is vacuum induction melted (VIM) and vacuum arc remelted (VAR) to provide the extremely high cleanliness level required for these fatigue-critical applications.

BG42 has proven to be an excellent knife steel when produced in sheet form. It offers excellent wear and corrosion resistance. The molybdenum enhances the corrosion resistance provided by the high chromium content. In addition, the chromium, molybdenum, and vanadium contents provide approximately 19% carbide volume in the steel.

This high carbide volume and the presence of very hard vanadium carbides enhance the wear resistance and edge retention of knife blades

• AMS 5749

• S42700

• Lescalloy BG42

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Cronidur 30 per AMS 5898

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L-605 Cobalt-based Alloy per AMS 5759

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4340 per AMS6415, AMS6414

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