Color Coated Tin Roofing Sheet
Electrolytic tinplate sheet with a printed passivated surface for roofing and panels
Specifications
Tinplate Coil/Strip/Sheet
Coated Tinplate Strip for Closures and Crowns
Narrow electrolytic tinplate cut to width for closures crowns and small formed parts
Coated tinplate strip is narrow width SPTE supplied as cold rolled low carbon steel plated with commercial pure tin on both faces, then passivated and oiled. Closure makers, crown cork producers and small parts formers specify it in SPCC, MR or SPCH against GB/T 2520-2008, JIS G3303-2008, DIN EN 10203-1991 or ASTM A623M-2011. Buying the strip already slit to the press width stops a converter having to run wide coil through its own slitter and carry the edge trim as scrap on every job. Thickness is held at 0.15-0.50mm within plus or minus 0.01 mm, which matters on a progressive die where feed height and blank pitch have no room to move.
- Product Name — Coated Tinplate Strip
- Also Known As — SPTE ETP electroplated tin steel strip
- Material — SPCC MR SPCH
- Thickness — 0.15-0.50mm
- Thickness Tolerance — Plus or minus 0.01 mm
Why It Is Specified
Key Benefits of Coated Tinplate Strip
strip width Set by Your Die Not by Stock
Strip is prepared at the width your press or roll former runs. The edge trim stays at the mill rather than accumulating as scrap beside your line.
Coating Weight Selected Between 1.1 and 11.2 g/m2
Tin coating can be ordered anywhere in the 1.1 to 11.2 g/m2 range on both faces. Crowns and closures in contact with carbonated or acidic contents take a heavier coating while dry pack components take a lighter one.
Gauge Control for Progressive Die Work
Thickness runs 0.15-0.50mm with a tolerance of plus or minus 0.01 mm. Consistent gauge keeps blanking burr and draw depth steady through a long die run.
Hard and Soft Temper From the Same Source
Temper is available from T2 through to T5 and in the double reduced DR7, DR7M and DR8 grades. Stiff closure shells and deep drawn components can be ordered on the same purchase order.
Solderable Tin Surface
The pure tin layer keeps the steel solderable and corrosion resistant while the base carries the strength. That combination is why tinplate is still used for soldered and seamed metal components.
Passivated and Oiled for Transit
Bright, stone or silver finish is passivated and carries DOS oil so the strip arrives without surface staining after a long sea leg.
Problems It Solves
What This Material Removes From Your Process
Edge Trim Piling Up Beside the Press
decoiling wide coil in house leaves trim that has to be handled, stored and sold as scrap. Strip supplied at the finished width moves that loss back up the chain.
Burr and Draw Depth Drifting Mid Run
Gauge variation changes blanking burr and draw depth and costs die setup time. Holding 0.15-0.50mm within plus or minus 0.01 mm keeps the die running between planned stops.
Two Suppliers for Hard and Soft Temper
Shops often split orders because one source covers soft tempers and another covers double reduced material. T2 to T5 and DR7 to DR8 come from the same stock here.
Surface Staining After Shipment
Unprotected tin surfaces mark during a long transit and get rejected at goods in. Passivation treatment plus DOS oil keeps the strip printable and formable on arrival.
Certificates That Do Not Match the Buyer Audit
Component buyers audit against different standards depending on market. Ordering to GB/T 2520-2008, JIS G3303-2008, DIN EN 10203-1991 or ASTM A623M-2011 keeps the paperwork aligned.
Application Scenarios
Where It Is Used
Crown Corks and Bottle Closures
Narrow strip blanked and formed into crowns and screw closures where the tin surface must sit against a carbonated or acidic product.
Can Ends and Component Rings
End shells, collars and rings stamped from strip for food and commodity cans that are assembled on a seaming line.
Instrument and Small Parts Enclosures
Small formed shells and brackets for instrument packaging where a rugged, printable metal is preferred over plastic.
Pharmaceutical Closures and Small Tins
Slip lids, hinged lids and closure components for health product packs that need a non-toxic corrosion resistant surface.
Industrial Packaging Hardware
Lever lid rings, handles and spout components for paint, adhesive and chemical containers produced in long die runs.
Who It Is For
Buyers Who Specify This Product
- Closure and crown manufacturers buying slit strip at the exact die feed width
- Stamping shops buying tinplate strip for progressive die blanking and drawing
- Can end producers buying strip for shell and collar production
- Instrument and small parts makers buying solderable strip for formed enclosures
- Packaging component suppliers buying strip for lever lid rings and spouts
- Purchasing engineers qualifying a strip width and temper against DIN EN 10203-1991
Technical Data
Specifications and Technical Features
Values below come from the product data published by Shandong Tianyu Metal Products. Confirm the exact grade and size against your order.
| Product Name | Coated Tinplate Strip |
|---|---|
| Also Known As | SPTE ETP electroplated tin steel strip |
| Material | SPCC MR SPCH |
| Thickness | 0.15-0.50mm |
| Thickness Tolerance | Plus or minus 0.01 mm |
| Width | Slit to requirement |
| Tin Coating | 1.1-11.2 g/m2 |
| Temper | T2 T2.5 T3 T3.5 T4 T5 DR7 DR7M DR8 |
| Annealing | BA batch annealing or CA continuous annealing |
| Surface Treatment | Bright stone or silver finish with passivation treatment and DOS oil |
| Standards | GB/T 2520-2008 JIS G3303-2008 DIN EN 10203-1991 ASTM A623M-2011 |
| Certificate | ISO9001 BV SGS RoHS |
| Place of Origin | China |
Technical Features
- Thickness 0.15-0.50mm with tolerance plus or minus 0.01 mm
- Tin coating 1.1-11.2 g/m2 electroplated on both faces
- Material SPCC MR and SPCH cold rolled low carbon steel
- Temper T2 T2.5 T3 T3.5 T4 T5 DR7 DR7M and DR8
- Batch annealed BA or continuous annealed CA condition
- Bright stone or silver surface with passivation applied
- DOS oil film for transit and handling protection
- Slit to the ordered strip width for press and roll forming feed
Materials
- SPCC MR or SPCH cold rolled steel base
- Commercial pure tin plated on both faces at 1.1-11.2 g/m2
- Passivation film applied over the tin coating
- DOS oil as a transit protection film
Certification
- ISO9001
- BV
- SGS
- RoHS
Manufacturing
How It Is Made and Processed
Low carbon steel cold rolled down to base gauge
Batch annealing BA or continuous annealing CA
Temper rolling or double reduction for the DR tempers
Electrolytic tin plating on both faces
Passivation treatment and DOS oiling
decoiling to the ordered strip width
Recoiling edge protection and export packing
Quality Control
Checks Before It Ships
- strip width and edge condition checked against the ordered strip width
- Thickness verified across the coil within plus or minus 0.01 mm
- Coating weight confirmed inside the ordered 1.1-11.2 g/m2 band
- Temper and annealing route matched to the order before decoiling
- Surface checked for passivation and even oil film before recoiling
Customization
What We Can Change on Your Order
- Strip slit to the width your die or roll former feeds
- Tin coating chosen anywhere between 1.1 and 11.2 g/m2
- Temper from T2 to T5 or double reduced DR7 DR7M and DR8
- BA or CA annealing route specified per order
- Bright stone or silver finish with the passivation you require
- Certified to GB/T JIS DIN EN or ASTM as the destination market needs
Comparison
Coated Tinplate Strip Against the Alternatives
| Wide tinplate coil slit in house | Mill slit strip arrives at the die width, so the trim loss and the slitter hours stay out of your plant. |
|---|---|
| Tin free steel strip | The tin layer keeps the strip solderable, which matters where components are soldered or seamed rather than only coated. |
| Stainless steel strip | Tinplate gives a corrosion resistant food contact surface at a much lower material cost where the duty is packaging rather than structural. |
| Pre painted cold rolled strip | Tinplate carries its corrosion protection as a metallic layer that survives blanking and drawing without the coating cracking at the cut edge. |
Use Guide
Specifying Handling and Welding Notes
- Give the exact die feed width and coil inner diameter so the strip is slit and wound to suit your decoiler
- Choose DR7 DR7M or DR8 where you want stiffness at low gauge and T2 to T4 where the part is deep drawn
- Keep coils on end and dry in store because DOS oil protects the surface only for transit
- Set blanking clearance against the ordered gauge rather than a nominal figure so the burr stays inside limit
- Ask for the coating weight in writing on the order because contents and shelf life drive that choice more than price
- Run a first article from the first coil of a new temper before committing the full die run
Questions Buyers Ask
Coated Tinplate Strip FAQ
What widths can you slit tinplate strip to?
Strip is slit to the width your press or roll former feeds. Give the width and the inner diameter your decoiler takes and we will confirm what can be produced.
How thin can the strip go?
Thickness runs from 0.15mm to 0.50mm and is held within plus or minus 0.01 mm. Toward the thin end of that range the double reduced DR tempers are usually the sensible choice for stiffness.
Which temper should we order for crown corks?
Crowns are normally formed from the harder end of the range, so DR7, DR7M or DR8 are the usual candidates. Tell us the shell depth and we will comment on what has worked on similar tooling.
How do we choose the tin coating weight?
Coating runs from 1.1 to 11.2 g/m2 and the contents drive the choice. Acidic and carbonated products need the heavier end while dry pack components can run lighter.
Is the material suitable for soldered assemblies?
Yes. Pure tin on the surface keeps the steel solderable, which is one of the reasons tinplate is still used on seamed and soldered components.
What documents come with the shipment?
The material is covered by ISO9001, BV, SGS and RoHS documentation. Name the standard you are ordering against so the certificate references GB/T, JIS, DIN EN or ASTM correctly.
Can you hold a repeat width for a running program?
Yes. Repeat programs are normally run to a fixed strip width and temper so each delivery drops straight onto the same die without a new setup.
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Read moreNeed a Price on Coated Tinplate Strip
Send the grade, thickness, width and quantity you need together with your destination port. A cutting list or drawing gets you a firmer number.