AMS 5630 - 440C Stainless Steel Bars and Forgings
AMS 5630 is a SAE International specification that covers 440C Stainless Steel bars and forgings. 440C is a high-carbon martensitic stainless steel known for its exceptional hardness, strength, and wear resistance. With a higher carbon content than 440A or 440B, this alloy achieves the maximum attainable hardness among all martensitic stainless steels.
Typical Applications of AMS 5630
440C Stainless Steel, which is specified in AMS 5630, is used for components that require maximum hardness and good corrosion resistance. 440C Stainless Steel is used in the following components:
– Bearing races and elements
– Valve components and pump parts
– Cutting tools and dies
– Aerospace fasteners and fittings
– Surgical instruments and precision instruments
What is 440C Stainless Steel
440C is a high carbon martensitic stainless steel that 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.
440 STAINLESS STEEL SPECIFICATIONS
440A Stainless Steel
440A is a high-carbon martensitic stainless steel, AOD melted for refined quality and consistency. It contains slightly less carbon than 440B and 440C
440C Stainless Steel
440C is the hardest and most wear-resistant grade in the 440 series due to its highest carbon content. It achieves excellent dimensional stability and superior bearing performance after hardening.
Certified Material for Critical Service
Fighter Jet Metals supplies 440A, 440B, 440C, and 440FSE Stainless Steel in various forms—bars, plates, and forgings—with full traceability and certification. Each alloy meets the highest aerospace and industrial standards, offering guaranteed quality and performance.