Low-Carbon Steel strip: Tinned

Chemical Composition
Equivalents
Mechanical properties
Finishes
Tolerances

The chemical composition is not specified in standards.

Element	% in weight (maximum, unless another value is established)
Element	(Type A)	(Type B)
C	0.04 - 0.08	0.09 - 0.12
Mn	0.18 - 0.35	0.30 - 0.50
S	0.02	0.02
P	0.02	0.02
Si	0.03	0.03
Cu	0.08	0.08
Ni	0.08	0.08
Sn	0.02	0.02
As	0.02	0.02
Mo	0.02	0.02
Cr	0.08	0.08
N	0.008	0.008
Al	0.02 - 0.08	0.02 - 0.08
Others	0.02	0.02

Type B steel is not suitable for use in welding.

Classification of symbols	Numerical classification	European Standard (EN)
TS230	1.0371	EN 10202
TS245	1.0372	EN 10202
TS260	1.0379	EN 10202
TS275	1.0375	EN 10202
TH415	1.0377	EN 10202
TH620	1.0374	EN 10202

TIN-PLATED STRIP: CORROSION RESISTANCE

CHARACTERISTICS OF TIN-PLATED STRIPS

Tin-plated strip is characterized by a tin coating that protects the steel against corrosion and prevents deterioration of the base material. The chemical composition of tin-plated strip is determined by the maximum weight percentage for Type A steels or Type B steels and is governed by the EN 10202 standard for cold-rolled steels for packaging. For details of each of these, please refer to the product data sheet section.

The approximate density of tin-plated strip is 7.85 kg/dm³ regardless of the format in which it is supplied. The weight of the coil is calculated taking into account the inside and outside diameter, as well as the material from which the strip is made. These three factors are important when calculating the total weight, but to facilitate this operation, VINCO has a weight calculator that helps you to obtain the final value without complications.

Tin-plated strip

FINISHES, COATINGS AND TOLERANCES

The finishes and coatings of tin-plated strips are governed by EN 10202, which applies to cold reduced steels for packaging. The finishes are: bright, fine stone, stone, silver and matte. All of them are determined according to the base steel - mild, fine stone, stone and shot-blasted - and the nominal roughness of the steel. Discover the terms and definitions in the table in the finishes section of the product data sheet.Por su parte, los recubrimientos se especifican según unos valores puntuales de g/m² mínimo y máximo diferenciados para aplicaciones con soldadura a alta velocidad y otras aplicaciones.

Tolerances are divided into thickness tolerances, width tolerances and deflection tolerances (arching of the strip for a given length). Thickness tolerances are subject to EN 10202 and the material thickness must meet the conditions specified in the tolerances section of the data sheet. Width tolerances take into account the nominal thickness of the tin-plated strip and are defined for products with sheared edges under commercial agreement. Finally, the deflection tolerances are calculated according to the nominal width depending on the edge curvature.

Find out all the technical specifications in the product sheet and ask our team of experts any questions you may have by calling (+34) 94 412 33 99 or emailing us at info@vinco.es. We will be happy to help you!

			Approximate international equivalents
Classification of symbols	Numerical classification	European Standard (EN)	Specific designation in European Standards EN 10202 and EN 10203	US (AISI)	Japan (JIS)	China (GB)
Classification of symbols	Numerical classification	European Standard (EN)
TS230	1.0371	EN 10202	T50BA
TS245	1.0372	EN 10202	T52BA
TS260	1.0379	EN 10202	T55BA
TS275	1.0375	EN 10202	T57BA
TH415	1.0377	EN 10202	T61CA
TH620	1.0374	EN 10202	DR620

Classification of symbols	Numerical classification	European Standard (EN)	Mechanical properties and hardness requirements
			Yield strength at 0.2% (Rp) N/mm²		Tensile strength (Rm) N/mm²
			Nominal values	Dev.	Expected values	Dev.
TS230	1.0371	EN 10202	230	± 50	325	± 50
TS245	1.0372	EN 10202	245	± 50	340	± 50
TS260	1.0379	EN 10202	260	± 50	360	± 50
TS275	1.0375	EN 10202	275	± 50	375	± 50
TH415	1.0377	EN 10202	415	± 50	435	± 50
TH620	1.0374	EN 10202	620	± 50	-	-

HARDNESS VALUES - SINGLE REDUCED SHEETS EN 10202

Rockwell hardness values HR Tm (for information purposes only)
Thickness (mm)	t ≤ 0.21		0.21 < t ≤ 0.28		t > 0.28
New types	Nominal value	Dev.	Nominal value	Dev.	Nominal value	Dev.
TS230	Max. 53	-	Max. 52	-	Max. 51	-
TS245	53	± 4	52	± 4	51	± 4
TS260	56	± 4	55	± 4	54	± 4
TS275	58	± 4	57	± 4	56	± 4
TH415	62	± 4	61	± 4	60	± 4
TH620	-	-	-	-	-	-

SURFACE FINISH

APPROVED FINISHES EN 10202

Product finish	Code	Base Steel	Nominal roughness of the base steel μm Ra	Terms and definitions
Bright	BR	Smooth	≤ 0.35	A finish resulting from the use of working rolls in the temper mill, with fine grinding, and, in the case of tin plates, the remelting of the layer of tin.
Fine stone	FS	Fine stone	0.25 - 0.45	A finish characterised by directional grooves, resulting from the use of rolls in the temper mill, with less fine grinding than is used for a bright finish and, in the case of tinplates, the remelting of the layer of tin.
Stone	ST	Stone	0.35 - 0.60	A finish characterised by directional grooves, resulting from the use of rolls in the temper mill, with less fine grinding than is used for a bright finish and, in the case of tinplates, the remelting of the layer of tin.
Silver	SG	Shot blasted	≥ 0.90	A tinplate product whose tin layer has been remelted, resulting from the use of shot blasted rolls in the temper mill.
Matt	MM	Shot blasted	Variable	A tinplate product resulting from the use of shot blasted rolls in the temper mill and not remelting the tin layer.

COATING

PRECISE VALUES FOR TIN COATINGS EN 10202

Nominal coating g/m²	Single spot values
Nominal coating g/m²	min g/m²	max g/m²
2.80	2.3	3.9
5.60	4.7	7.2
8.40	7.15	No technical requirements
11.20	9.55	No technical requirements

HICKNESS TOLERANCES

Thickness tolerances and edge reduction according to EN 10202

The thickness of the material must meet the following requirements:
a) Deviation from the agreed thickness, measured on the centre line of the strip, must not exceed ± 5%.
b) Deviation from the agreed thickness, measured at any point at a distance of no less than 6 mm from the sheared edge, must be between +5% and -8%.

WIDTH TOLERANCES

Nominal thickness t		dimensional width tolerances for strips with sheared edges under a commercial agreement¹⁾
Nominal thickness t		3-15	15-50	50-150	>150
>=	<	3-15	15-50	50-150	>150
0,20 ²⁾	0,40	0;+0,15	0;+0,15	0;+0,15	0;+0,20
0,40	1,00	0;+0,17	0;+0,18	0;+0,20	0;+0,24
1,00	1,50	0;+0,20	0;+0,20	0;+0,20	0;+0,30
1,50	2,50	on request	0;+0,26	0;+0,30	0;+0,32
2,50	5,00	on request	on request	0;+0,32	0;+0,35

Sizes in mm.

1) Other, closer dimensional tolerances are possible under a commercial agreement .

2) Including the value t=0.20.

EDGE CAMBER TOLERANCES

Nominal width(W)	Edge curve tolerances under commercial agreement
	Maximum deviation 2000 mm Thickness (t)


	t ≤ 1,20 mm	t > 1,20 mm
3 ≤ W < 6	10,00	15,00
6 < W ≤ 10	8,00	12,00
10 < W ≤ 20	4,00	6,00
20 < W ≤ 350	2,00	4,00

Sizes en mm.

* The data contained in this catalogue are for information purposes only and are not under any circumstances, contractual supply conditions. Errors and omissions excepted.