Corrosion Resistant

ALLOY ASTM AISI Cr % Ni % OTHER DESCRIPTION
CA-15 A351
A487
A743
410 12 1   Widely used in mildly corrosive environments; hardenable, good erosion resistance
CA-40 A743 420 12 1   Similar to CA-15 at higher strength level
CA-6NM A743
A487
  12 4 Mo .7 Improved properties over CA-15, especially improved resistance to cavitations
CF-3 A743
A351
304L 19 10   CF types most widely used corrosion resistant alloys at ambient and cryogenic temperatures
CF-8 A351
A743
304 19 9   CF types most widely used corrosion resistant alloys at ambient and cryogenic temperatures
CF-3M A743
A351
316L 19 11 Mo 2 Enhanced resistance to halogen ion and reducing acids
CF-8M A743
A351
316 19 9 Mo 2 Enhanced resistance to halogen ion and reducing acids
CF-8C A351 347 19 9   Used where application does not permit post-weld heat treat
CG-8M A743
A351
317 19 11 Mo 3 Greater resistance to pitting and corrosion in reducing media than CF-8M
CH-20 A743
A351
309 13 24   Superior to CF-8 in specialized chemical and paper applications in resistance to hot H2SO3 organic acids and dilute H2SO4
CK-20 A351
A743
310 25 20   Improved corrosion resistance compared with CH-20
CN-7M A743
A351
  20 29 Mo 2
Cu 3
Highly resistant to H2SO4, H3PO4 and H2SO3, salts, seawater
CY-40 A494   15 74 Fe 10 Superb corrosion resistance over widest temperature range; virtually immune to chloride SCC

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