>>>>BACK
Chemical Composition & Physical Properties
|
Grade
|
Chemical Composition (mass fraction) %
|
||||||||
|
Sn
|
AI |
Zn
|
Ni
|
Fe
|
Pb
|
P |
Cu
|
Total impurity content
|
|
|
QSn4-4-4
|
3.0~5.0
|
0.002
|
3.0~5.0
|
0.2
|
0.05
|
3.5~4.5
|
0.03
|
remain
|
0.2
|
|
Grade
|
Condition
|
Tensile Test
|
Hardness Test
|
|||
|
Thickness/mm
|
Tensile Rm/
(N/mm2) |
Elongation after fracture %
|
HV
|
HRB
|
||
|
QSn4-4-4
|
M
|
≥0.8
|
≥ 290
|
≥35
|
-
|
-
|
| Y2 |
390~490
|
≥10
|
-
|
65~85
|
||
| Y2 |
420~510
|
≥9
|
-
|
70~90
|
||
| Y |
≥490
|
≥5
|
-
|
-
|
||