Original
By certification 
Achse-Zentrum Legierung Super elastische Legierung Material 3J40
PrecisionAlloy3J40
Schock-Proofandamp; WearResistantaxle-centrealloy(YB/T5243-1993)
Verwendung: Itisappliedtoproducetheaxle-Centreofinstrumentandmeteraswellastheaxle-Centreofthestaff
GradeandChemicalComposition(seeTable1)
Table1GradeandChemicalComposition
Klasse |
ChemicalComposition(%) |
|||||||||
C |
P |
S |
MN |
Si |
Fe |
CR |
A1 |
CE |
NI |
|
≤ | ||||||||||
3J40 |
0.03 |
0.010 |
0.010 |
0.10 |
0.20 |
0.50 |
39.0~41.0 |
3.30~3.50 |
0.10~0.2 |
Balance |
© Basedonaddition
MechanicalProperty(seeTable2)
Table2MechanicalProperty
Statue |
VickersHardness/HV |
CommendedHeat Behandlung |
BendTestTheradiusof themandrelis twiceasthediameter ofthealloy |
|||
Ich |
Ⅱ |
Ⅲ |
||||
ColdDrawing |
450~510 |
Bend90degrees. Nocracksandbroken ontheoutsideofthebending |
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ColdDrawnandamp; Alterung |
780~830 |
Andgt; 830 ~ 880 |
Andgt; 880 |
480 ~ 540° C Keepwarmfor5h |
||
Note:1.Thedefaulthardnessclassificationofthealloywireincolddrawingandamp; AgingstatusisclassII.
PhysicalProperty(seeTable3—Table5)
Table3CoefficientofLinearExpansion
Zustand |
||||||
20 ~ 55° C |
20 ~ 100° C |
20 ~ 200° C |
20 ~ 300° C |
20 ~ 400° C |
20 ~ 500° C |
|
SolidSolution |
12.2~12.7 |
12.4~12.5 |
12.6~12.8 |
13.0~13.1 |
13.5~13.6 |
13.8~14.0 |
SolidSolutionandamp, Alterung |
11.0~11.5 |
11.9~12.0 |
12.0~12.2 |
12.4~12.5 |
12.7~12.8 |
13.1~13.3 |
ColdDrawnandamp, Alterung |
11.6 |
12.0 |
12.1 |
12.4 |
12.8 |
13.3 |
Table4ModulusofElasticityandamp; FrequencyTemperatureCoefficient
Zustand |
ModulusofElasticity |
MechanicalQuality FactorQ20 ° C |
||
20 ~-40 ° C |
20 ~ 100° C |
|||
SolidSolution + 80 % StrainRate |
176500~196000 |
|||
SolidSolution + 80 % StrainRate + Aging5h |
225500~235500 |
-103~-106 |
-104~-110 |
49000~51000 |
Table5MagneticSusceptibilityandamp; Widerstandsmessungen
Zustand |
MagneticSusceptibility |
Resistivity/(μΩ•m) |
Density/(g/cm³) |
|
H = 40KA/m |
H:80KA / m |
|||
SolidSolution |
3.5~4.5 |
3.5~4.6 |
7.6 |
|
SolidSolution + Aging |
3.8~4.0 |
2.4~4.2 |
||
SolidSolution + ColdDrawing |
2.8~3.0 |
1.21 |
||
SolidSolution + 69 % StrainRate + Aging |
0.78 |
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CorrosionResistingProperty(SeeTable5)
Table5CorrosionResistingProperty
Zustand |
SaltFogTest |
LongtimeStore inTheAir |
ColdDrawing + SolidSolution + Aging |
Nocorrosionafter240hours(TestedbythebuyerperJB1606) |
Nocorrosion |
