Heat resistant Alloys
Overview
In order to respond to the environmental issues and because of the introduction of new ways of manufacturing processing of electronic and other components, more and more facilities, equipment, and parts are being used at high temperatures. Consequently, demand for heat-resistant alloys is growing due to the following needs: improvement in product reliability; consistency in equipment for new processes; optimization of repair and maintenance processes; reduction of equipment maintenance frequency span; reduction of total investment costs by taking into consideration running and maintenance costs, etc.
Based on accumulated during over 40 years technological experience in melting, processing, quality control and heat-resistance in various industries, Hitachi Metals ,Ltd. Okegawa Works manufactures various types of heat-resistant alloy products and also offers related consulting services.
The following list, for reference, is a comprehensive introduction to the various types of alloys. Please note that the values presented are average and are not guaranteed.
Lineup
| Material | Property and application | Equivalent Alloy |
|---|---|---|
| MA47P | Excellent oxidation resistance. Used for oxidized atmospheres such as furnace containers, mesh belts, trays and heat furnaces. | |
| MC Alloy | Excellent corrosion resistance to nitric hydrofluoric acid, phosphoric acid, and sulfuric acid. Superior high-temperature corrosion resistance. | |
| MA-N | Shows excellent corrosion resistance to molten salts, especially to molten fluoride salt. Used for jet engine parts. | |
| MA-X | Has good high-temperature strength and excellent oxidization resistance. | Hastelloy X |
| MA600,MA600T | Excellent oxidation resistance. Used for industrial furnace, aircrafts , and nuclear energy plant material | Inconel 600 |
| MA601 | Excels especially in oxidation resistance. Used for heat treatment furnaces. | Inconel 601 |
| MA625 | Excellent oxidation and corrosion resistance to various acids. Has high fatigue strength. | Inconel 625 |
| MA718 | Used for jet engines and rocket parts for its outstanding high-temperature strength. | Inconel 718 |
| MA706 | Used for jet engines and rocket parts for its good high-temperature strength. | Inconel 706 |
| MA750 | Used mostly in gas turbine parts for its excellent high-temperature strength. | Inconel X-750 |
| MA75N | Excellent high-temperature strength and oxidation resistance. Mainly used as heat treatment furnace material. | Nimonic 75 |
| MA80A | Better high-temperature strength than MA75N. Used under high stress. | Nimonic 80A |
| MA90N | Allows use in higher temperatures than MA80A. Used for jet engines and internal combustion parts. | Nimonic 90 |
| MA263 | Good high-temperature creep strength. Used for jet engine parts. | Nimonic 263 |
| MA-WASP | Good high-temperature strength. Used for jet engine and gas turbine parts. | Waspaloy |
| MA24 | Excellent high-temperature oxidation resistance. Used for firing jigs of electronic material and mesh belts of continuous annealing furnaces. | Haynes 214 Alloy |
| MA23 | Excellent high-temperature oxidation resistance and superior high-temperature strength. Used for jet engine parts and internal combustion parts. | Haynes 230 Alloy |
| MA25 | Good high-temperature strength. Widely used for aircrafts and furnace material. | Haynes 25 Alloy |
| MA188 | Has superior oxidation resistance and high strength. Used in aircrafts and gas turbines. | Haynes 188 Alloy |
| UMCo50 | Superior thermal shock and wear resistance. Strong against sulfur and vanadium-attack, and used as heat treatment furnace material. | |
| MA800 | Has good high-temperature strength, and also resistant to oxidation and carburization . Used in petrochemical high-temperature reactors. | Incoloy 800 |
| MA800H | Alloy with better high-temperature strength and higher creep rupture strength than MA800. | Incoloy 800H |
| MA286 | Precipitation-enhanced type alloy that has excellent high-temperature strength and corrosion resistance. Used for jet engine parts. | A-286 |
| MA155N | Excellent high-temperature strength. Used for turbine blades and jet engine parts. | N-155 |
| MA5560 | Superior oxidation resistance, corrosion resistance, and sulfuration resistance. | Haynes 556 Alloy |
‡Haynes and Hastelloy are registered trademarks of Haynes International,Inc.
‡Inconel, Incoloy, Nimonic are registered trademarks of Special Metals Corporation.
‡Waspaloy is a registered trademark of United Technologies,Inc.
Composition
| Alloys | Ni | Cr | Mo | Co | W | Fe | Al | Ti | other |
|---|---|---|---|---|---|---|---|---|---|
| MC Alloy | Bal | 44 | 1 | ||||||
| MA-N | Bal | 7 | 16.5 | ||||||
| MA-X | Bal | 22 | 9 | 1.5 | 0.6 | 18 | |||
| MA600,MA600T | Bal | 15.5 | 7 | ||||||
| MA601 | Bal | 23 | 14 | 1.35 | |||||
| MA625 | Bal | 21.5 | |||||||
| MA718 | Bal | 19 | 3 | 19 | 0.5 | 0.9 | (Nb+Ta)5.1 | ||
| MA706 | Bal | 16 | 37 | 1.8 | (Nb+Ta)2.9 | ||||
| MA750 | Bal | 15 | 7 | 0.7 | 2.5 | (Nb+Ta)1.0 | |||
| MA75N | Bal | 19.5 | 0.4 | ||||||
| MA80A | Bal | 19.5 | 1.0 | 1.1 | 2.2 | ||||
| MA90N | Bal | 19.5 | 17 | 1.4 | 2.4 | ||||
| MA263 | Bal | 20 | 5.9 | 20 | 0.5 | ||||
| MA-WASP | Bal | 19 | 4 | 14 | 1 | 1.3 | 3.0 | ||
| MA24 | Bal | 16 | 4.5 | ||||||
| MA23 | Bal | 22 | 2 | 14 | |||||
| MA25 | 10 | 20 | Bal | 15 | 1.5 | ||||
| MA188 | 22 | 22 | Bal | 14.5 | <3 | La | |||
| UMCo50 | 28 | Bal | 21 | C0.1,Mn0.9,Si1 | |||||
| MA800 | 32.5 | 21 | Bal | 0.38 | |||||
| MA800H | 32.5 | 21 | Bal | 0.38 | High C | ||||
| MA286 | 26 | 15 | 1.3 | Bal | 0.2 | 2.1 | V0.3 | ||
| MA155N | 20 | 21 | 3 | 20 | 2.5 | Bal | |||
| MA5560 | 20 | 22 | 3 | 18 | 2.5 | Bal | La,Zr,N |
‡Haynes and Hastelloy are registered trademarks of Haynes International,Inc.
‡Inconel, Incoloy, Nimonic are registered trademarks of Special Metals Corporation.
‡Waspaloy is a registered trademark of United Technologies,Inc.
Product Shape
| Alloy | Hot rolling plates |
Cold rolling plates |
Bars Forgings |
Wires | Piping tubes (Includes welded pipes) |
Equivalent Alloy |
|---|---|---|---|---|---|---|
| MC Alloy | A | A | A | A | A | |
| MA-N | A | A | A | A | A | |
| MA-X | A | A | A | A | A | Hastelloy X |
| MA600,MA600T | A | A | A | A | A | Inconel 600 |
| MA601 | A | A | A | A | A | Inconel 601 |
| MA625 | A | A | A | A | A | Inconel 625 |
| MA718 | A | A | A | A | N/A | Inconel 718 |
| MA706 | N/A | A | A | N/A | N/A | Inconel 706 |
| MA750 | A | A | A | A | A | Inconel X-750 |
| MA75N | A | A | A | A | A | Nimonic 75 |
| MA80A | A | A | A | A | A | Nimonic 80A |
| MA90N | A | A | A | A | N/A | Nimonic 90 |
| MA263 | A | A | A | A | N/A | Nimonic 263 |
| MA-WASP | A | A | A | A | N/A | Waspaloy |
| MA24 | A | A | A | A | A | Haynes 214 Alloy |
| MA23 | A | A | A | A | A | Haynes 230 Alloy |
| MA25 | A | A | A | A | A | Haynes 25 Alloy |
| MA188 | A | A | A | A | A | Haynes 188 |
| UMCo50 | A | A | A | N/A | A | |
| MA800 | A | A | A | A | A | Incoloy 800 |
| MA800H | A | A | A | A | A | Incoloy 800H |
| MA286 | A | A | A | A | A | A-286 |
| MA155N | A | A | A | A | A | N-155 |
| MA5560 | A | A | A | A | A | Haynes 556 Alloy |
‡Haynes and Hastelloy are registered trademarks of Haynes International,Inc.
‡Inconel, Incoloy, Nimonic are registered trademarks of Special Metals Corporation.
‡Waspaloy is a registered trademark of United Technologies,Inc.
Available Specifications
| Alloy | UNS No. | ASME,ASTM | AMS | JIS | Equivalent Alloy |
|---|---|---|---|---|---|
| MA-X | N06002 | SB435 SB572 SB619 SB622 SB626 |
5536 5754 5587 5588 | H4551 H4552 H4553 H4554 |
Hastelloy X |
| MA600,MA600T | N06600 | SB166 SB168 SB517 SB163 SB167 Code Case 1484,1578,1290 |
5540 5665 |
G4901 G4902 G4903 G4904 |
Inconel 600 |
| MA601 | N06601 | Code Case 1500 SB163 SB166 SB167 SB168 |
5870 5715 |
G4901 G4902 |
Inconel 601 |
| MA625 | N06625 | SB443 SB444 SB446 Code Case 1409 |
5599 5666 | G4901 G4902 G4903 G4904 |
Inconel 625 |
| MA718 | N07718 | SB637 B670 |
5596 5597 5662 5663 5664 |
G4901 G4902 |
Inconel 718 |
| MA706 | N09706 | 5605 5606 5701 5702 5703 |
Inconel 706 | ||
| MA750 | N07750 | SB637 Code Case 1344,1390 |
5542 5667 5668 5670 |
G4901 G4902 |
Inconel X750 |
| MA80A | N07080 | G4901 G4902 |
Nimonic 80A | ||
| MA-WASP | N07001 | 5544 5704 5706 5708 5709 |
|||
| MA23 | N06230 | SB435 SB572 SB619 SB622 SB626 |
5878 5891 |
||
| MA25 | R30605 | 5537 5759 |
|||
| MA188 | R30188 | 5608 5772 |
|||
| MA800 | N08800 | SB163 SB407 SB408 SB409 SB514 SB515 |
G4901 G4902 G4903 G4904 |
Incoloy 800 | |
| MA800H | N08810 | SB163 SB407 SB408 SB409 SB514 SB515 Code Case 1325 |
G4901 G4902 G4903 G4904 |
Incoloy 800H | |
| MA155N | R30155 | 5532 5768 5769 |
G4311 G4312 |
N-155 | |
| MA5560 | R30556 | SB435 SB572 SB619 SB622 SB626 |
5831 5874 5877 |
Haynes556 Alloy |
‡Haynes and Hastelloy are registered trademarks of Haynes International,Inc.
‡Inconel, Incoloy, Nimonic are registered trademarks of Special Metals Corporation.
‡Waspaloy is a registered trademark of United Technologies,Inc.
