Shock-proof
& Wear Resistant axle-centre alloy（YB/T5243-1993）
Relative
Grade：40ХНЮ-ВИ，ЭП793 Russia
Grade and Chemical Composition (see
Table1)
Table1 Grade and Chemical Composition
|
Grade
|
Chemical Composition (%)
|
|
C
|
P
|
S
|
Mn
|
Si
|
Fe
|
Cr
|
A1
|
Ce①
|
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
|
Bal
|
① Based on addition.
Mechanical Property (see
Table 2)
Table 2 Mechanical Property
|
Statue
|
Vickers Hardness/ HV
|
Commended Heat Treatment
|
Bend Test
The radius
of the mandrel is twice as the diameter of the alloy
|
|
I
|
Ⅱ
|
Ⅲ
|
|
|
Cold Drawing
|
450～510
|
|
Bend 90 degrees. No cracks and
broken on the outside of the bending
|
|
Cold Drawn &
Aging
|
780～830
|
>830～880
|
>880
|
480～540°C
Keep warm for 5h
|
|
NOTE: 1、The default hardness
classification of the alloy wire in cold drawing & aging status is class
II.
Physical Property (see Table 3—Table 5)
Table 3 Coefficient
of Linear Expansion
|
State
|
Coefficient
of Linear Expansion/(10-6/K)
|
|
20～55℃
|
20～100℃
|
20～200℃
|
20～300℃
|
20～400℃
|
20～500℃
|
|
Solid Solution
|
12.2～12.7
|
12.4～12.5
|
12.6～12.8
|
13.0～13.1
|
13.5～13.6
|
13.8～14.0
|
|
Solid Solution&aging
|
11.0～11.5
|
11.9～12.0
|
12.0～12.2
|
12.4～12.5
|
12.7～12.8
|
13.1～13.3
|
|
Cold drawn & aging
|
11.6
|
12.0
|
12.1
|
12.4
|
12.8
|
13.3
|
Table
4 Modulus
of Elasticity & Frequency Temperature Coefficient
|
State
|
Modulus of
Elasticity
|
Temperature
Coefficient βf/(10-6℃)
|
Mechanical Quality
Factor Q20℃
|
|
20～-40℃
|
20～100℃
|
|
Solid Solution +80% Strain Rate
|
176500～196000
|
|
|
|
|
Solid Solution +80% Strain Rate+Aging
5h
|
225500～235500
|
-103～-106
|
-104～-110
|
49000～51000
|
Table 5 Magnetic Susceptibility & Resistivity
|
State
|
Magnetic Susceptibility
|
Resistivity
/(μΩ?m)
|
Density
/(g/cm3)
|
|
H=40KA/m
|
H：80KA/m
|
|
Solid Solution
|
3.5～4.5
|
3.5～4.6
|
|
7.6
|
|
Solid Solution+ Aging
|
3.8～4.0
|
2.4～4.2
|
|
|
|
Solid Solution+ Cold
Drawing
|
2.8～3.0
|
|
1.21
|
|
|
Solid Solution +69% Strain Rate+Aging
|
|
|
0.78
|
|
Corrosion
Resisting Property (See Table 5)
Table
5 Corrosion Resisting Property
|
State
|
Salt Fog Test
|
Long-time store in the air
|
|
Cold
Drawing+ Solid Solution+Aging
|
No
corrosion after 240 hours (Tested by the buyer per JB1606)
|
No corrosion
|
Usage: It is applied to produce the axle-centre
of instrument and meter as well as the
axle-centre of the staff
Note: we could do any other
products with specified technical standard, say,
ASTM,SAE,DIN,S.E.W.,JIS,ISO,IEC,NF,BS,ΓОСТ.PLS contact us for more information:
Tel: +86-29-89396652 or e-mail us at: Sales@xaleipeng.com
