Tin Free Steel Coil - TFS/TMBP

Excellent paint & printing adhesion, better than conventional ETP tinplate
Two types available: single‑sided TFS‑S and double‑sided TFS‑D
Full temper grades T1‑T5 & DR7‑DR10 match diverse stamping requirements
Complies with ASTM, JIS, EN, GB standards, supports custom slitting strips

Product Overview

Tin Free Steel Coil – TFS/TMBP, also known as ECCS (Electrolytic Chromium Coated Steel), is a low-carbon cold-rolled steel substrate treated with electrolytic chromium rather than tin plating. Its surface consists of a metallic chromium layer and a chromium-hydrated-oxide layer, providing strong adhesion for paints, lacquers and printing inks.

The product is available in TFS-S single-sided and TFS-D double-sided chromium-coated configurations, with temper grades from T1 to T5 and DR7 to DR10. These options support different stamping and forming requirements for metal packaging production.

With a thickness range of 0.15–0.45 mm and standard coil widths of 800–1050 mm, TFS/TMBP can also be supplied with custom narrow-width slitting. It is used for crown caps, easy-open ends, cosmetic packaging, battery shells, printed metal boxes, paint and ink pail lids, and food twist-off caps.

Tin Free Steel Coil - TFS/TMBP

Chemical & Mechanical Property Snapshot

Grade	C Max (%)	Mn Max (%)	P Max (%)	S Max (%)	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)	Hardness (HR30T)
T1	0.12	0.60	0.020	0.050	210–290	310–390	≥27	46–52
T2	0.12	0.60	0.020	0.050	230–310	330–410	≥24	50–56
T2.5	0.12	0.60	0.020	0.050	240–320	340–420	≥22	52–58
T3	0.12	0.60	0.020	0.050	250–330	350–430	≥20	54–60
T3.5	0.12	0.60	0.020	0.050	270–350	370–450	≥18	56–62
T4	0.12	0.60	0.020	0.050	290–370	390–470	≥16	58–64
T5	0.12	0.60	0.020	0.050	320–400	420–500	≥14	62–68
DR7	0.12	0.60	0.020	0.050	490–570	530–610	≥4	70–74
DR8	0.12	0.60	0.020	0.050	530–610	570–650	≥3	72–76
DR8.5	0.12	0.60	0.020	0.050	560–640	600–680	≥3	74–78
DR9	0.12	0.60	0.020	0.050	590–670	630–710	≥2	76–80
DR9.5	0.12	0.60	0.020	0.050	620–700	660–740	≥2	78–82
DR10	0.12	0.60	0.020	0.050	650–730	690–770	≥2	80–84

Detailed Technical Specifications

Item	Specification
Product Name	Tin Free Steel Coil – TFS/TMBP
Alternative Name	ECCS – Electrolytic Chromium Coated Steel
Steel Substrate	Low-carbon cold-rolled steel
Surface Treatment	Electrolytic chromium coating
Metallic Chromium Coating	70–150 mg/m²
Chromium-Hydrated-Oxide Layer	5–15 mg/m²
Coating Configuration	TFS-S / TFS-D
Temper Grades	T1, T2, T2.5, T3, T3.5, T4, T5
Double-Reduced Grades	DR7, DR8, DR8.5, DR9, DR9.5, DR10
Thickness	0.15–0.45 mm
Standard Coil Width	800–1050 mm
Slitting	Custom narrow-width slitting available
Applicable Standards	ASTM A624/A624M, JIS G3315, EN 10202, GB/T 2520
Quality Documentation	Mill Test Certificate covering coating weight, mechanical properties and chemical composition
Packing	Seaworthy export-grade packing
MOQ	5 Ton
Payment Terms	T/T, L/C at Sight
Delivery Time	7–15 working days after receiving deposit
Package	Waterproof paper + galvanized steel strap + seaworthy export wooden pallet

Product Comparison Table

Specification	TFS-S	TFS-D	ETP Tinplate
Material Type	Tin Free Steel	Tin Free Steel	Electrolytic Tinplate
Surface Treatment	Electrolytic Chromium Coating	Electrolytic Chromium Coating	Electrolytic Tin Coating
Coating Sides	Single-Sided	Double-Sided	Tin Coating on Both Sides
Surface Structure	Metallic Chromium + Chromium-Hydrated Oxide	Metallic Chromium + Chromium-Hydrated Oxide	Tin Coating
Paint / Printing Adhesion	Excellent	Excellent	Good, depending on application
Yield Strength Range	T1–T5: 210–400 MPa; DR: 490–730 MPa	T1–T5: 210–400 MPa; DR: 490–730 MPa	T1–T5: 210–400 MPa; DR: 490–730 MPa
Typical Selection Factor	When one-side chromium coating is required	When two-side chromium coating is required	When tin-coated steel is required
Temper Options	T1–T5 / DR7–DR10	T1–T5 / DR7–DR10	T1–T5 / DR Grades
TFS Thickness Range	0.15–0.45 mm	0.15–0.45 mm	—
Standard TFS Width	800–1050 mm	800–1050 mm	—
Typical Applications	Caps, printed packaging, cosmetic boxes, battery shells	Caps, printed packaging, cosmetic boxes, battery shells	Food cans, aerosol cans, paint pails, milk powder cans
Important Boundary	Not suitable for hermetic sealed welding	Not suitable for hermetic sealed welding	Select according to finished-product requirements

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

Lithium Battery Steel Casing

Cosmetic Packaging Boxes

Crown Caps for Beer and Beverages

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What is Tin Free Steel Coil - TFS/TMBP?

Tin Free Steel Coil - TFS/TMBP is low-carbon cold-rolled steel treated with electrolytic chromium instead of tin plating. It is also known as ECCS – Electrolytic Chromium Coated Steel.

What is the difference between TFS-S and TFS-D?

TFS-S is single-sided chromium coated, while TFS-D is double-sided chromium coated. The appropriate configuration depends on the coating requirements of the finished product.

What thickness and temper grades are available?

The supplied range is 0.15–0.45 mm, with T1–T5 and DR7–DR10 temper grades available.

Can TFS be used for printed metal packaging?

Yes. TFS has strong paint and printing adhesion and is used for printed metal boxes, cosmetic packaging, pail lids and other decorated metal packaging products.

Is Tin Free Steel suitable for hermetic sealed welding?

No. The supplied product documentation specifically identifies TFS as not suitable for hermetic sealed welding applications.

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Tin Free Steel Coil - TFS/TMBP | ECCS Steel