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Classification |
Product (JIS) |
Main component |
ASTM |
Characteristics |
Typical applications |
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Martensitic cast stainless steels |
|
(SCS6) |
13Cr-4Ni+0.8Mo |
CA6NM |
S41500 |
Nickel (Ni) and molybdenum (Mo) are the major alloying additions. This alloy has corrosion resistance and weldability superior to that of common martensitic stainless steels. |
Suitable for oil wells, petroleum refining plants, etc. |
|
Austenitic cast stainless steels |
|
(SCS13A) |
18Cr-8Ni |
CF8 |
304 |
Resistant to nitric acid, phosphoric acid and organic acids in general but susceptible to sulfuric acid. |
Widely used in practically all industrial fields, including pulp and paper, chemical and marine environments. |
|
(SCS19A) |
18Cr-8Ni-LC(2) |
CF3 |
304L |
Modified alloy of SCS13A with superior resistance to intergranular corrosion. |
|
(SCS14A) |
18Cr-9Ni-2Mo |
CF8M |
316 |
Corrosion-resistant except for hydrochloric acid, hydrofluoric acid and high-concentration, high-temperature sulfuric and phosphoric acids. |
|
(SCS16A) |
18Cr-9Ni-2Mo-LC(2) |
CF3M |
316L |
Modified alloy of SCS14A with superior resistance to intergranular corrosion. |
|
(SCS21) |
18Cr-10Ni-Nb |
CF8C |
347 |
The use of niobium (Nb) has created stable carbides and gives this alloy an improved resistance to intergranular corrosion that surpasses that of SCS13A. |
|
- |
18Cr-12Ni-3.5Mo |
CG8M |
317 |
A modified alloy of SCS14A with superior resistance to both pitting and crack corrosion. |
Suitable for electric power, marine applications, oil pipelines, etc. |
|
- |
18Cr-12Ni-3.5Mo-LC(2) |
CG3M |
317L |
|
KSN-1 |
18Cr-13Ni-4.5Si |
- |
- |
Highly resistant to nitric acids of all concentrations and also resistant to fuming nitric acid. |
Suitable for nitric acid manufacturing processes of any level of concentration. |
|
(SCS23) |
21Cr-29Ni-2.5Mo-3.5Cu |
CN7M |
N08020 |
Highly resistant to sulfuric acids of all concentrations below 60°C and also to hot solutions of dilute acids. |
Suitable for applications in chemical and oil refining processes that employ acetic acid, alkali, dilute hydrochloric acid, dilute hydrofluoric acid, silicofluoric acid and phosphoric acid. |
|
CN3MCu |
21Cr-29Ni-2.7Mo-3.2Cu-LC(2) |
CN3MCu |
- |
|
SCS18 |
25Cr-20Ni |
CK20 |
310S |
This alloy contains higher percentages of chromium (Cr) and nickel (Ni) than SCS13A and is used in environments where sulfite solutions or dilute sulfuric acid at room temperature are present. |
Suitable for applications in chemical fields. |
|
K800 |
33Ni-20Cr-45Fe-Nb |
CT15C |
N08800 |
High strength, high resistance to oxidation and carburizing in a high-temperature atmosphere. Its structure remains stable, even when stored for long periods. It also has good corrosion resistance in humid environments. |
Suitable for chemical and food processing equipment. |
|
Super austenitic cast stainless steels |
|
SASV-Z1 |
21Cr-24Ni-6.5Mo-N |
CN3MN |
N08367 |
This steel alloy provides the highest acid and alkali resistance among all common austenitic cast stainless steels, in addition to its excellent resistance to both pitting and crack corrosion in chloride solutions such as seawater. |
Suitable for applications in chemical plants for processing high-concentration chlorides, flue gas desulfurizers, various acid/alkali reactors, salt manufacturing and seawater desalination plants, etc. |
|
SASV-Z2 |
25Cr-24Ni-6.5Mo-N |
CN3MN Mod |
- |
|
SASV-Z3 |
20Cr-18Ni-6.5Mo-N-Cu |
CK3MCuN |
S31254 |
|
Two-phase cast stainless steels |
|
KDPV22 |
22Cr-5Ni-3Mo-N |
CD3MN |
S32205 |
Highly resistant to stress corrosion cracking (SCC) and pitting corrosion in medium-concentration chloride environments, this steel also provides superior resistance to general corrosion in an environment of dilute sulfuric and phosphoric acids. |
Suitable for applications in the pulp and papermaking, petroleum, chemical and marine industries. |
|
Super two-phase cast stainless steels |
|
(SCS10) |
25Cr-7Ni-3Mo-N |
- |
S32750 |
Combining advantages of both austenitic and ferritic cast stainless steels, this unique alloy steel has a stress corrosion cracking resistance higher than any other austenitic alloys and a weldability superior to any other ferritic alloys. Furthermore, this alloy is very strong and provides higher resistance to acids and pitting/crack corrosion than SCS16A. |
Suitable for applications in salt manufacturing, seawater desalination plants and other seawater service lines in environments where chlorides are present and in plants for processing dilute sulfuric, phosphoric, formic, acetic or uric acids in environments where acids are present. This material is also used in chemical plants in the plastics industry, flue gas desulfurizers, wastewater concentrators, etc. |
|
(SCS10mod) |
28Cr-7Ni-4Mo-N |
- |
- |
|
SDPV-K3 |
25Cr-7Ni-3Mo-Cu-N-W |
CD3MWCuN |
S32750 |
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Ni-Cu alloy cast steels |
|
M-35-1 |
67Ni-30Cu |
M-35-1 |
N04400 |
Good corrosion resistance in a reducing environment and not liable to local corrosion. Not susceptible to stress corrosion cracking (SCC) caused by Cl-. |
Suitable for chemical processing plants that require the use of alkali salts and hydrofluoric acid, oil refining plants, etc. |
|
Ni-Cr alloy cast steels |
|
K600 |
78Ni-15Cr-5Fe |
CY-40 |
N06600 |
High resistance to oxidation and stress corrosion cracking (SCC) caused by Cl- in high-temperature applications, high purity and superior corrosion resistance in an alkali environment. |
Suitable mainly for chemical
and food processing plants. |
|
Ni-Mo alloy cast steels |
|
HB-K1 |
67Ni-28Mo-5Fe |
N-12MW |
N10001 |
These have resistance to hydrochloric acids of all concentrations up to the boiling point, and resistance to reduced salts, such as sulfuric acid, phosphoric acid and cupric chloride, of concentrations up to 60%. This alloy is used for high-temperature applications but cannot be used in a highly oxidizing environment. |
Suitable for corrosion-resistant applications in chemical processes that employ chlorine, sulfuric acid, phosphoric acid, acetic acid and hydrogen chloride gases or plants for processing chlorides in high-temperature, high-concentration conditions. |
|
HB-K2 |
68Ni-31Mo-1Fe |
N-7M |
N10665 |
|
Ni-Cr-Mo alloy cast steels |
|
HC-K1 |
58Ni-16Cr-16Mo-6Fe-4W |
CW-12MW |
N10276 |
Good resistance in a highly oxidizing environment such as in the presence of wet chlorine gases and chlorine dioxides, this metal also has good resistance to acetic acid, seawater and other organic acids and salts. |
Suitable for applications in manufacturing and chemical processing plants for oxidizing acid, formic acid and acetic anhydride or chemical equipment used for fluorides, etc. |
|
HC-K2 |
58Ni-21Cr-14Mo-4Fe-3W |
CX2MW |
N06022 |
|
K625 |
65Ni-22Cr-9Mo-3.5Nb |
CW-6MC |
N26625 |
High resistance to oxidation and superior corrosion resistance in high-temperature applications with good resistance to corrosive environments. |
Suitable mainly for chemical
and seawater processing plants. |
|
K825 |
43Ni-22Cr-3Mo-30Fe-Nb |
Cu5MCuC |
N08825 |
Superior resistance to sulfuric and phosphoric acids, to stress corrosion cracking (SCC) and crack corrosion. |
|
Nickel |
|
CZ-100 |
97Ni |
CZ-100 |
N02200 |
This metal has excellent corrosion resistance in alkali hydroxide solutions and fused alkalis such as sodium and potassium hydroxides. |
Suitable for chemical processing plants that require the use of alkali salts and hydrofluoric acid, oil refining plants, etc. |
|
|
Titanium |
|
T-K1 |
99Ti |
- |
B348 Gr.2 |
This metal has excellent corrosion resistance in a highly oxidizing environment such as in the presence of nitric acid and organic compounds such as acetic acid, and it is also highly resistant to seawater. |
Suitable for applications in pulp and papermaking, petroleum refining, chemical plants, etc. |
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