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Elástico 3J40 Material de la aleación del Super aleación eje centro
PrecisionAlloy3J40
Descarga-proofandamp; WearResistantaxle-centrealloy(YB/T5243-1993)
Uso: Itisappliedtoproducetheaxle-centreofinstrumentandmeteraswellastheaxle-centreofthestaff
GradeandChemicalComposition(seeTable1)
Table1GradeandChemicalComposition
Grado |
ChemicalComposition(%) |
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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
Estatua de |
VickersHardness/HV |
CommendedHeat Tratamiento |
BendTestTheradiusof themandrelis twiceasthediameter ofthealloy |
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Me |
Ⅱ |
Ⅲ |
||||
ColdDrawing |
450~510 |
Bend90degrees. Nocracksandbroken ontheoutsideofthebending |
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ColdDrawnandamp; Envejecimiento de la |
780~830 |
andgt; 830 ~ 880 |
andgt; 880 |
480 ~ 540° C Keepwarmfor5h |
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Note:1.Thedefaulthardnessclassificationofthealloywireincolddrawingandamp; agingstatusisclassII.
PhysicalProperty(seeTable3—Table5)
Table3CoefficientofLinearExpansion
Estado |
||||||
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, envejecimiento |
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, envejecimiento |
11.6 |
12.0 |
12.1 |
12.4 |
12.8 |
13.3 |
Table4ModulusofElasticityandamp; FrequencyTemperatureCoefficient
Estado |
ModulusofElasticity |
MechanicalQuality FactorQ20 ° C |
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20 ~-40 ° C |
20 ~ 100° C |
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SolidSolution + 80% StrainRate |
176500~196000 |
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SolidSolution + StrainRate + Aging5h 80% |
225500~235500 |
-103~-106 |
-104~-110 |
49000~51000 |
Table5MagneticSusceptibilityandamp; Resistencia
Estado |
MagneticSusceptibility |
Resistivity/(μΩ•m) |
Density/(g/cm³) |
|
H = 40KA/m |
H:80KA / m |
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SolidSolution |
3.5~4.5 |
3.5~4.6 |
7.6 |
|
SolidSolution + envejecimiento |
3.8~4.0 |
2.4~4.2 |
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SolidSolution + ColdDrawing |
2.8~3.0 |
1.21 |
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SolidSolution + StrainRate + envejecimiento 69% |
0.78 |
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CorrosionResistingProperty(SeeTable5)
Table5CorrosionResistingProperty
Estado |
SaltFogTest |
LongtimeStore inTheAir |
ColdDrawing + SolidSolution + envejecimiento |
Nocorrosionafter240hours(TestedbythebuyerperJB1606) |
Nocorrosion |
