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Corrosion Resisting Alloy 440C

Data Sheet : 440C

STOCK SIZES

Chemical Composition Limits
Weight % C

Si

 Mn P+S max Cr Mo Ni Others

AISI 440C

 0.95 / 1.2 1.0 max 1.0 max

0.04 P 

0.03 S

 16.0 / 18.0 0.75 - -

AFNOR 

Z100 CD 17

 0.90 / 1.2 1.0 max 1.0 max

0.04 P 

0.03 S

 16.0 / 18.0 0.35 / 0.75 0.50 max

Cu 0.50 max

AMS 5630

 0.95 / 1.2 1.0 max 1.0 max

0.04 P 

0.03 S

 16.0 / 18.0 0.4 / 0.65 0.75 max

Cu 0.50 max

WS 1.4125

M-17C

CHRONIFER

X 105 CrMo 17

Z 100 CD 17

 0.95 / 1.2 1.0 max 1.0 max

0.015 S

max

 16.0 / 18.0

0.8

max

-

-

      

High carbon chromium steel is designed to provide stainless steel properties with maximum hardness.

After heat-treatment Type 440C attains the highest hardness of any stainless steel (about 60 HRC).

This stainless steel is principally used for bearing assemblies including ball bearings and should be considered for needle valves and ball check valves.

   

Availability 

Alloy 440C is available in Bar (Flat, Hexagon, Round, Square), Wire, Billet, Rod.  For all stock availability contact Sales.

 

Specifications

AISI 440C 

AMS 5630  Bar, Wire, Forgings

AMS 5880 Bearing Application 

AMS-QQ-S-763

ASTM A 276

ASTM A 484

QQ S 763

ASTM A314

ASTM A493

ASTM A756

ASTM A473

ASTM A580

440C VAC MELT ANN

AMS 5618

AMS 5630

AMS 5880 Bearing Quality)

AMS QQ S 763

ASTM A 276

QQS-763

RBO 160-064 EXC Sonic

 

Typical Room Temperature Mechanical Properties 

Hardened 1900ºF (1038ºC) oil quench, tempered 600ºF (316ºC)

440C
0.2% Yield Strength MPa Ultimate Tensile Strength MPa % Elongation in 2" % Reduction of Area Brinell Hardness
1896 1965 2 10 580

 

Disclaimer

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

 

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