Overview
UNS S44003, also known as AISI 440B, is a high-carbon martensitic stainless steel that offers a balance of strength, hardness, and corrosion resistance. This alloy is part of the 440 series, positioned between 440A and 440C in terms of carbon content and properties.
Typical Uses
Valve components, pump parts, and bearings.
MetalTek Grade
MTEK 440B
Similar Specifications
Wrought UNS: S44003
Wrought Grade: 440B
Typical Chemical Composition (% by wt.)
Aluminum: n/a
Carbon: 0.75-0.95
Chromium: 16-18
Manganese: 1
Iron: BAL
Copper: n/a
Nickel: n/a
Lead: n/a
Tin: n/a
Silicon: 1
Zinc: n/a
Other: Mo 0.75
Minimum Mechanical Properties
Heat Treatment: Anneal
NOTES: Brinell value is MAX.