ALLOY

ASTM

AISI

Cr %

Ni %

OTHER

DESCRIPTION

CA-15

A296
A351
A487
A743

410

12

1

Widely used in mildly corrosive environments; hardenable, good erosion resistance

CA-40

A296

420

12

1

Similar to CA-15 at higher strength level

CA-6NM

A296
A487

12

4

Mo .7

Improved properties over CA-15, especially improved resistance to cavitation

CD-30

A296

442

12

7

Improved performance in oxidizing environments compared with CA-15

CF-3

A296
A351

304L

19

10

CF types most widely used corrosion resistant alloys at ambient and cryogenic temperatures

CF-8

A296
A351

304

19

9

CF types most widely used corrosion resistant alloys at ambient and cryogenic temperatures

CF-3M

A296
A351

316L

19

11

Mo 2

Enhanced resistance to halogen ion and reducing acids

CF-8M

A296
A351

316

19

9

Mo 2

Enhanced resistance to halogen ion and reducing acids

CF-8C

A296
A351

347

19

9

Used where application does not permit post-weld heat treat

CG-8M

A296
A351

317

19

11

Mo 3

Greater resistance to pitting and corrosion in reducing media than CF-8M

CH-20

A296
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

A296
A351

310

25

20

Improved corrosion resistance compared with CH-20

CH-7M

A296
A351

20

29

Mo 2
Cu 3

Highly resistant to H₂SO₄, H₃PO₄ and H₂SO₃, salts, seawater

CY-40

A296
A494

15

74

Fe 10

Superb corrosion resistance over widest temperature range; virtually immune to chloride SCC

CZ-100

A296
A494

Particularly useful for maintaining product purity of foods, synthetic fibers and caustic alkalis