Purchasing Tin Materiels
- Purchasing categories: tin and metallic lump tin alloy scraps, tin and tin alloy slags,tin mud, tin and tin alloy chip scraps.
- Trial Order Quantity: One Container .
- Purchasing Quality Standard Reference &Instruction
The category of tin, the parts of tin alloy and tin alloy scraps
| Category |
Requirements |
Category |
Group |
Name of Scraps |
Tin and Metallic Lump Tin Alloy Scraps |
Pure
Tin
Scraps |
Chemical Plating Tin Scraps
Tin Radicle Alloy Scraps |
Grade1; Sn≥95%, no other impurities and oil stain.
Grade2; 90%≤Sn<95%, no other impurities and oil stain.
Grade3: 80%≤Sn<90%, no other impurities and oil stain. |
Tin Alloy Scraps |
Grade1: Sn≥90%, no other impurities and oil stain.
Grade2; 70%≤Sn<90%,no other impurities and oil stain
Grade3; 50%≤Sn<70%, no other impurities and oil stain |
Other Alloy Scraps |
Grade1: 30%≤Sn≤50%, no other impurities and oil stain.
Grade2: 10%≤Sn<30%, no other impurities and oil stain. |
Tin and Tin Alloy Dross, Dust, Mud Slags |
Tin Slags
|
Refining Slags |
Particle Size
30mm max Moisture
10% max |
Grade1; Sn≥60%, no other impurities and oil stain.
Grade2:40%≤Sn<60%,no other impurities and oil stain.
Grade3; 20%≤Sn<40%, no other impurities and oil stain. |
Slags |
Particle Size
100mm max
Moisture
10% max |
Grade1; Sn≥30%, no other impurities and oil stain.
Grade2:15%≤Sn<30%, no other impurities and oil stain.
Grade3; 5%≤Sn<15%, no other impurities and oil stain. |
Hydrometallurgy, Plating Slags |
Particle Size
15mm max
Moisture
40% max |
Grade1; Sn≥80%, no other impurities and oil stain.
Grade2:60%≤Sn<80%, no other impurities and oil stain.
Grade3; 40%≤Sn<60%, no other impurities and oil stain.
Grade4: 20%≤Sn<40%, no other impurities and oil stain. |
Tin Mud |
Tin Mud |
Particle Size
1mm max
Moisture
60% max |
Grade1; Sn≥60%, no other impurities and oil stain.
Grade2:20%≤Sn<60%,no other impurities and oil stain.
Grade3; 10%≤Sn<20%, no other impurities and oil stain. |
Tin and Tin Alloy Chip Scraps |
Tin and Tin Chip |
Tin Alloy Chip |
Grade1; Sn≥80%, no other impurities and oil stain.
Grade2:60%≤Sn<80%, no other impurities and oil stain.
Grade3; 40%≤Sn<60%, no other impurities and oil stain.
Grade4: 20%≤Sn<40%, no other impurities and oil stain. |
Quality and Shape
It's not allowed to mix sealed container, flammable, explosive, toxic, corrosive, radioactive substance and medical waste into tin scraps. Under transportable condition, the biggest external dimension of lump tin scraps can be negotiated and determined by both parties of selling and buying and indicated in the contract. If there are special requirements from buying party that can be determined by both parties and indicated in the contract.
Inspection and Acceptance
The inspection of tin scraps should be carried out by the technical supervision department of buying party.Or a third party inspectorate can be consigned to make the inspection.(E.g. SGS or Alex Stewart in China).The supplying party should guarantee the quality conforming to this standard or stipulation of the contract and fill in quality certificates.
Lots
The tin scraps should be submitted for inspection by lots, each lot should be composed by the same category, same group and same grade.
Transportation and Storage
The tin scraps in different categories and groups can not be mixed-loading during transportation.
During the processes of transportation, loading , unloading and stacking, the tin scraps should
not be mixed with explosive, flammable, corrosive, virulent, radioactive substances and garbage.
And also the facilities which are polluted by above materials should not be used for loading and unloading. There must be rain protection, snow protection and fire protection facilities if there are special requirements.
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