Expansion alloy also known as thermal expansion alloy, widely used in a variety of fields, such as electronics, precision measuring tools, precision instrument and cryogenic engineering. Controlled expansion alloys contract upon heating rather than expanding as most alloys do in negative thermal expansion process, so they have a range of potential applications. Expansion alloys include controlled-expansion alloys, low-expansion alloys and non-magnetic controlled expansion alloys.
Domestic and foreign designations:
Beiye | China Standard | America | Germany | France | Japan |
BYP27 | 4J42k | ||||
BYP24 | 4J42 | NiCloy, Carpanter L.E.42, Glass Sealing 42, GasFree, Alloy 42, Glass5 | Nilo42, Vacodill, Ni42 | FeNi42 | D, 42FN, NSD, Fe-42Ni |
BYP30 | 4J45 | Carpanter, G.S.46, Ferrovac 46 Ni, Allegheng, Alloy 46, Glass4 | Nilo44, Vacodill46, Ni42 | N48 | |
BYP44 | 4J50 | Carpanfer G.S.49, Carpanfer G.E.49, Alloy52, Class2 | Vacovit 50, Vacovit 51, Fe Ni 50, NiFe47 | N50RL, N50, Fe-Ni50 | NS-1, NS-2, 50FN, Fe-50Ni |
BYP45 | 4J52 | Niloy52 | Fe Ni 52 NiFe47 | N52 | |
P46 | 4J54 | Alleg heng 4750 | Fe Ni 54 | N54 | 21 P46 |
4J6 | Class6 Sylvania 4 Sealmet 4 Carpanter 426 ASTM F31 MIL-I-23011C Glass6 | Vacovit (Nicr 426) | ASV NF A54-301 Fe- Ni 426Cr | NRS1 SNC NCK 426 EMAS-1002 Fe-42Ni-6Cr | |
BYP2 | Sylvania 4 Sealmet 4 Carpanter 426 ASTM F31 MIL-I-23011C Glass6 | Vacovit (Nicr 426) | ASV | NRS1 SNC NCK 426 | |
BYP42 | |||||
BYP43 | |||||
BYP31 | 4J47 | Alloy48 Class3 | Ni48、Ni49 | Fe-Ni48 | |
BYP41 | 4J49 | NiFe47Cr | Fe-Ni47Cr5 | ||
BYP40 | 4J48 | ||||
BYP12 | 4J29 | AMS7727A AMS7728E Class1 | Ni29Co18 | Fe-Ni29Co17 | Iron, nickel, cobalt sealing alloy |
4J44 | |||||
BYP17 | 4J33 | ||||
BYP18 | 4J34 | ||||
BYP11 | 4J28 | Glass Sealing 28 Sealmet I ASTM F256 | Vacovit 0.25 | Dilver 0 | FR25 FR28 |
BYP29 | 4J43 | ASTMF29 Dumet | Dumas No.1 | ||
BYP16 | 4J32 | Super-Invar Super-Nilvar | Invar Superieur | Super-Invar SI | |
BYP19 | 4J36 | Invar Nilvar Unispan36 | Vacodil36 Nilo36 | Invar Standard | Invar |
BYP21 | 4J38 | 36Ni FM Invar Free achining Simonds 38~7 FM | |||
4J40 | |||||
4J78 | |||||
4J80 | |||||
4J82 |
Beimetal has mastered the high-precision and high-flatness control technology of expanded alloy strips/foils, and solved the difficulties of strip/foil thickness accuracy and plate shape control. Through systematic research, the comprehensive quality of expansion alloy products has been significantly improved, the production capacity has been increasing, and the industrialization of multi-species, multi-specification and multi-purpose expansion alloys has been realized.