SPTE (tinplate)/ETP (electroplated tinplate) corrosion-resistant tinplate rolls are made of high-quality low-carbon steel as the substrate, with a uniform layer of tin or tin alloy electroplated on its surface. This combination provides both the strength of steel and excellent corrosion resistance.
Primarily used for food packaging including canned meats, fish, fruits, vegetables, as well as dry foods like biscuits and milk powder. Also suitable for military and emergency food storage requiring long-term preservation.
| Specification | |
| Thickness: 0.15mm – 0.50mm | Width: 700mm -1050mm |
| Anneal: CA/BA | Material: MR/SPCC |
| Temper | |
| Single Reduced: T1,T2,T2.5,T3,T4,T5 | Double Reduced: DR8, DR9, DR10 |
| Surface Finish: Bright, Stone, Silver, Matte | |
| Tin-coating: | |
| Equal Tin-coating: 1.1/1.1, 2.0/2.0, 2.8/2.8, 5.6/5.6,8.4/8.4,11.2/11.2 | Differential Tin-coating: 2.0/1.1, 2.8/1.1, 2.8/2.0,5.6/1.1,5.6/2.0,5.6/2.8,etc |
| Temper | ||||
| Standard | Japanese Standard | Chinese Standard | European Standard | American Standard |
| JIS3303-2002 | GB/T 2520-2000 | DIN EN 10203-1991 | ASTM623M-2002 | |
|
Single-Reduced
|
T1 | TH50+SE | TS230 | T1(T49) |
| T2 | TH52+SE | TS245 | T2(T53) | |
| T2.5 | TH55+SE | TS260 | T2.5(T55) | |
| T3 | TH57+SE | TS275 | T3(T57) | |
| T4 | TH61+SE | TH415 | T4(T61) | |
| T5 | TH65+SE | TH435 | T5(T65) | |
|
Double-Reduced
|
DR7 | H71+SE | TH520 | DR7(T71) |
| DR8 | H73+SE | TH550 | DR8(T73) | |
| DR9 | H76+SE | TH620 | DR9(T76) | |
| Surface Finish | ||
| Classification | Symbol | Specific feature |
| Bright Finish | B | A luster finish provided by a flow-melted tin coating on a smoothly finished steel based with grindstone-pattern. |
| Stone Finish | R | A luster finish provided by a flow-melted tin coating on a steel base characterized by a directional grindstone-pattern. |
| Silver Finish | S | A luster finish provided by a flow-melted tin coating on a coarse dull-finished steel base. |
| Matte Finish | M | A dull finish usually provided by an unflow-melted tin coating on a dull finished steel base. |
| Tin Coating | ||||
| Type | Former Coating Designation | Coating Weight Code | Nominal Coating Weight(g/m2) | Minimun Average Coating Weight(g/m2) |
| Equal tin-coating (E) | 10# | 1.1/1.1 | 1.1/1.1 | 0.9/0.9 |
| 20# | 2.0/2.0 | 2.0/2.0 | 1.8/1.8 | |
| 25# | 2.8/2.8 | 2.8/2.8 | 2.5/2.5 | |
| 50# | 5.6/5.6 | 5.6/5.6 | 5.2/5.2 | |
| 75# | 8.4/8.4 | 8.4/8.4 | 7.8/7.8 | |
| 100# | 11.2/11.2 | 11.2/11.2 | 10.1/10.1 | |
| Differential tin-coating (D or A) | 20#/10# | 2.0/1.1 | 2.0/1.1 | 1.8/0.9 |
| 25#/10# | 2.8/1.1 | 2.8/1.1 | 2.5/0.9 | |
| 50#/10# | 5.6/1.1 | 5.6/1.1 | 5.2/0.9 | |
| 50#/25# | 5.6/2.8 | 5.6/2.8 | 5.2/2.5 | |
| 75#/25# | 8.4/2.8 | 8.4/2.8 | 7.8/2.5 | |
| 75#/50# | 8.4/5.6 | 8.4/5.6 | 7.8/5.2 | |
| 100#/25# | 11.2/2.8 | 11.2/2.8 | 10.1/2.5 | |
| 100#/50# | 11.2/5.6 | 11.2/5.6 | 10.1/5.2 | |
| 100#/75# | 11.2/8.4 | 11.2/8.4 | 10.1/7.8 | |
| 125#/50# | 15.1/5.6 | 15.1/5.6 | 13.9/5.2 | |
