Ceramvar alloy, ASTM F1466, (Fe-Ni27-Co25), Chinese 4J33/4J34
Cross Reference:
Grade | Russia | U.S.A. | Germany | |
4J33 | 33Hk（Ni33Co17） | - | Ni33Co15 | - |
4J34 | 31HK（Ni31Co20） | Ceramvar（Ni27Co25） | - | Vacon20（Ni28Co20） |
Grade & Chemical Composition (See Table 1)
Table 1 Grade & Chemical Composition
| Chemical Composition (%) | |||||||
C | P | S | Mn | Si | Ni | Co | Fe | |
≤ | ||||||||
4J33 | 0.05 | 0.020 | 0.020 | 0.50 | 0.30 | 32.1～33.6 | 14.0～15.2 | Balance |
4J34 | 0.05 | 0.020 | 0.020 | 0.50 | 0.30 | 28.5～29.5 | 19.5～20.5 | Balance |
Notes:
1.Under condition that the average coefficient of the linear expansion meets the requirements of the standard, the content of nickel and cobalt are allowed to deviate from the stated range.
2.The shape and dimensions of the alloys are in compliance with GB/T14985.
Mechanical Properties (See Table 2—Table4)
Table 2 Tensile Strength (for wires)
Symbol | State | Tensile Strength |
R | Annealed | <585 |
1 | Unannealed | >860 |
Table 3 Tensile Strength (for Strips)
Symbol | State | Tensile Strength/MPa |
R | Annealed | <570 |
l | Unannealed | >700 |
Table 4 Hardness of Deep Stamping Strips
State | Thickness | Hardness HV |
Deep-Stamping | >2.5 | ≤170 |
≤2.5 | ≤165 |
Physical Property (See Table 5 & Table 6)
Table5 Linear Expansion Cofficient
Grade | Heat treatment of the samples | Mean Coefficient of Linear Expansion ā/(10-6/K) | |||
20～300℃ | 20～400℃ | 20～500℃ | 20～600℃ | ||
4J33 | Heat to 900±20℃ in the protective atmosphere or in vacuum condition, hold for 1 hour, cooled to 200℃ at a rate less than 5℃/h, and take out from the furnace. | 6.0～6.8 | 6.6～7.4 | ||
4J34 | 6.3～7.1 | 7.8～8.5 | |||
Table 6 Typical Coefficient of Linear Expansion
Grade | Mean Coefficient of Linear Expansion at Different Temperature ā/(10-6/K) | ||||
20～200℃ | 20.300℃ | 20～400℃ | 20～500℃ | 20～600℃ | |
4J33 | 7.1 | 6.5 | 6.3 | 7.1 | 8.5 |
4J34 | 7.5 | 6.9 | 6.6 | 6.9 | 8.3 |
Note: The values in the tables are for reference only.
Specification: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube
