Corrosion Resisting Alloy 440C AMS 5630/5618


Technical Data Sheet

AISI 400C is available in either standard melted (ams 5630) or vacuum melted (ams 5618) versions. AMS 5618 is typically used for anti-friction bearing components where resistance to both corrosion and wear is essential. 440C is capable of hardnesses in excess of 58 HRC after heat treatment.

Chemical Composition Limits
Weight% C Si Mn P+S 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 / 5618 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

0.95/ 1.2 1.0 max 1.0 max 0.04 P
0.03 S
16.0/ 18.0 0.40 / 0.80 - -

Availability
AMS 5630 is available in Bars, Wire and Forgings. For all stock availability contact Sales.

Specifications
UNS S44004, UNS S44002, UNS S44020
FED QQ S 763
CLASS 440C
AMS 5631
AMS 5632

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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.