GRADE STAINLESS STEEL 440C | AISI 440C | UNS S44004
Stainless Steel 440C is a high carbon chromium stainless steel. It has great corrosion resistance when hardened. It shows great resistance to wear and abrasion. It is magnetic in all conditions and yields the highest hardnesses of hardenable stainless steels.
440C Bearing Quality (BQ) is a Martensitic stainless steel with high strength, corrosion resistance and hardness obtained by low temperature heat treatment.
Typical Applications
Balls
Bearings
Races
Nozzles
Oil well pump parts
Valve parts
Cams
Aircraft parts
Chemistry (range or maximum in %)
Grade
C
MN
S
NI
CR
Other
440C
.95/1.20
1.00
0.03
0.75
16.00/18.00
Mo .40/.65
Cu .50
440C BQ
Grade 440C Bar Properties
Grade
Shape
Size
Range
Tensile KSI
Elongation %
Red. of area %
Brinell Hardness
Relative Machinability *
Specification
440C
Rounds
1/4″ – 8″
110
65
14
25
230
40%
AMS 5630/ASTM A-276
440C BQ
Rounds
1/2″ – 6″
–
–
–
–
–
–
–
Cronidur® 30 Stainless Steel
Cronidur® 30, a stainless martensitic steel, has greater corrosion resistance then 440c, and is longer wearing. Applications include aviation, medical engineering, industrial applications, precision mechanics, and many more!
Aero Metals Alliance (AMA) provides Aluminium, Stainless Steel, Alloy Steel, Titanium, Nickel Alloys and supply chain management services to the world’s leading aerospace companies. We currently operate from fourteen Service Centres in five countries throughout the America, Europe and Asia
This enables us to aggregate demand across a single supply chain on behalf of the world’s leading OEMs whilst at the same time providing a truly responsive local service to meet the needs of individual sub-contractors anywhere in the world.
Each of our Service Centres are equipped with the latest technology to meet the specific needs of each of our customers.
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