Low-Carbon Steel strip: Cold-rolled

Chemical Composition
Equivalents
Mechanical properties
Finishes
Tolerances

			Chemical Composition
Classification of symbols	Numerical classification	European Standard (EN)	C	Si	Mn	p	S	Ti	Al	Nb
DC01	1.0330	EN 10130 / EN 10139	≤ 0.12	-	≤ 0.60	≤ 0.045	≤ 0.045	-	-	-
DC03	1.0347	EN 10130 / EN 10139	≤ 0.1	-	≤ 0.45	≤ 0.035	≤ 0.035	-	-	-
DC04	1.0338	EN 10130 / EN 10139	≤ 0.08	-	≤ 0.4	≤ 0.03	≤ 0.03	-	-	-
DC05	1.0312	EN 10130 / EN 10139	≤ 0.06	-	≤ 0.35	≤ 0.025	≤ 0.025	-	-	-
DC06	1.0873	EN 10130 / EN 10139	≤ 0.02	-	≤ 0.25	≤ 0.02	≤ 0.02	≤ 0.3	-	-
HC260LA	1.0480	EN 10268	≤ 0.100	≤ 0.50	≤ 0.60	≤ 0.025	≤ 0.025	≤ 0.150	≥ 0.015	-
HC420LA	1.0556	EN 10268	≤ 0.100	≤ 0.50	≤ 1.60	≤ 0.025	≤ 0.025	≤ 0.150	≥ 0.015	≤ 0.090
11SMn30	1.0715	EN 10087	≤ 0.14	≤ 0.05	0.90 - 1.30	≤ 0.11	0.27 - 0.33	-	-	-

			Approximate international equivalents
Classification of symbols	Numerical classification	European Standard (EN)	US (AISI)		Japan (JIS)		China (GB)
DC01	1.0330	EN 10139	DC01	A366	SPCC	G3141	1008	GB/T 5213
DC03	1.0347	EN 10139	DC03	A619	SPCD	G3141	1006	GB/T 5213
DC04	1.0338	EN 10139	DC04	A620	SPCE	G3141	1006	GB/T 5213
DC05	1.0312	EN 10139
DC06	1.0873	EN 10139
HC260LA	1.0480	EN 10268
HC420LA	1.0556	EN 10268
11SMn30	1.0715	EN 10087	Y15	A29	SUM 22	G 4804	1213	GB/T 8731

MECHANICAL PROPERTIES AND HARDNESS REQUIREMENTS EN 10130 / EN 10139 ²⁾

Symbolic classification	Numerical classification	Delivery condition	Symbol	Re N/mm²	Rm N/mm²	Elongation at break (min. %)	HV hardness
						A₈₀	min.	max.
		Skin-passed	LC	max. 280	270 - 410 ³⁾	28 ^{1) 3)}	-	115 ³⁾
			C290	200 - 380	290 - 430	18	95	125
			C340	min. 250	340 - 490	-	105	155
DC01	1.0330		C390	min. 310	390 - 540	-	117	172
		Hardened by cold rolling	C440	min. 360	440 - 590	-	135	185
			C490	min. 420	490 - 640	-	155	200
			C590	min. 520	590 - 740	-	185	225
			C690	min. 630	min. 690	-	215	-
		Skin-passed	LC	max. 240 ³⁾	270 - 370 ³⁾	34 ^{1) 3)}	-	110³⁾
			C290	210 - 355	290 - 390	22	95	117
			C340	min. 240	340 - 440	-	105	130
DC03	1.0347	Hardened by cold rolling	C390	min. 330	390 - 490	-	117	155
			C440	min. 380	440 - 540	-	135	172
			C490	min. 440	490 - 590	-	155	185
			C590	min. 540	min. 590	-	185	-
		Skin-passed	LC	max. 210 ³⁾	270 - 350 ³⁾	38^{1) 3)}	-	105³⁾
			C290	220 - 325	290 - 390	24	95	117
			C340	min. 240	340 - 440	-	105	130
DC04	1.0338	Hardened by cold rolling	C390	min. 350	390 - 490	-	117	155
			C440	min. 400	440 - 590	-	135	172
			C490	min. 460	490 - 590	-	155	185
			C590	min. 560	590 - 690	-	185	215
DC05	1.0312	Skin-passed	LC	max. 180 ³⁾	270 - 330³⁾	40¹⁾	-	100 ³⁾
DC06	1.0873	Skin-passed	LC	max. 180³⁾	270 - 350³⁾	38^{1) 3)}	-	-

NOTE 1) - For thicknesses of 0.5 mm < and ≤ 0.7 mm, the minimum elongation at break value may be decreased by 2 units. For thicknesses between 0.2 mm < and ≤ 0.5 mm, the minimum elongation at break value may be decreased by 4 units. For e ≤ 0.2 mm, the minimum elongation at break value may be decreased by 6 units.
NOTE 2) - For thicknesses below 1.5 mm, a maximum yield strength value of 235 N/mm² is permitted.
NOTE 3) - The values specified on the table are only applicable to surfaces with MA appearances. For surfaces with MB and MC appearances, the yield strength and tensile strength values increase by 20 N/mm² and the elongation at break values decrease by 2 units. Additionally, the HV value increases by 5 units.

MECHANICAL PROPERTIES AND HARDNESS REQUIREMENTS EN 10268

		Direction
		L						T
Classification of symbols	Numerical classification	Thickness	(mm)	Re (MPa)	Rm (MPa)	A₈₀	(%)	Thickness	(mm)	Re (MPa)	Rm (MPa)	A₈₀	(%)
HC260LA	1.0480	0.5 - 0.7	0.7 - 3	240 - 310	340 - 420	≥ 25	≥ 27	0.5 - 0.7	0.7 - 3	260 - 330	350 - 430	≥ 24	≥ 26
HC420LA	1.0556	0.5 - 0.7	0.7 - 3	400 - 500	460 - 580	≥ 16	≥ 18	0.5 - 0.7	0.7 - 3	420 - 520	470 - 590	≥ 15	≥ 17

MECHANICAL PROPERTIES AND HARDNESS REQUIREMENTS EN 10087

11SMn30

1.0715

Mechanical properties to be agreed when placing the order or requesting the quote.

EN 10139:1997

The surface finish can be "rough", "matt", "normal" or "bright".

Products with MA and MB surface appearances are generally supplied with a "normal" surface finish (RL). If a "rough" (RR) or "matt" (RM) surface finish is requested, the respective symbol must be indicated in the description.
The MC surface appearance must be supplied with a "bright" surface finish (RN).

For delivery conditions C290 to C690, the possible impact on the product's mechanical properties of stress relaxation or recrystallization due to the action of high temperatures must be taken into account.

Surface appearance			Special Surface Finish	Suitability for chrome plating and other coatings
Symbol	Properties	Field of application	Special Surface Finish	Suitability for chrome plating and other coatings
MA	Bright surface, metallically clean. Pores, small defects and scratches are allowed.	All thicknesses and all heat treatments.	RR, RM, RL	-
MB	Bright surface, metallically clean. Pores, small defects and scratches are allowed, provided that no change to the smooth and even appearance is visible to the naked eye.	Thicknesses ≤ 2.0 mm.	RM, RL	Medium / High
MC	Bright surface, metallically clean. Pores, small defects and scratches are allowed, provided that they do not affect the bright appearance of the surface.	Thicknesses ≤ 1.0 mm.	RN	High

The different surface finishes are characterised by the following average roughness (Ra) reference values:

Finish	Roughness
Rough	RR	Ra ≥ 1.5 μm
Matt	RM	0.6 μm > Ra ≤ 1.8 μm
Normal	RL	Ra ≤ 0.6 μm
Bright	RN	Ra ≤ 0.2μm.

EN 10268:2006

Surface appearance: The products covered by this European standard can only be supplied with surface appearance A, as defined in European Standard EN 10130. - some defects are allowed such as pores, light scratches, small marks or slight discolouration when they do not affect the formability or adhesion of surface coatings.

Surface finish: The surface finish of products covered by this European standard must meet the requirements of European Standard EN 10130 for products with a rolling width ≥ 600 mm, and the requirements of the EN 10139 European Standard for products with a rolling width < 600 mm.

THICKNESS TOLERANCES

The thickness tolerances are: normal (A), fine (B) or precision (C ).

Nominal thickness		Thickness tolerances according to EN 10140 for nominal widths (W) in mm.¹⁾						EN 10131
Nominal thickness		<125			≥ 125 Y <600			1200 ≥ W ≥ 1500
>	≤	A	B	C	A	B	C	A
>	≤	normal	fine	precision	normal	fine	precision	normal
-	0,10	± 0,008	± 0,006	± 0,004	± 0,010	± 0,008	± 0,005	-
0,10	0,15	±0,010	± 0,008	± 0,005	± 0,015	± 0,012	± 0,010	-
0,15	0,25	±0,015	± 0,012	± 0,008	± 0,020	± 0,015	± 0,010	-
0,25	0,35	± 0,020	± 0,015	± 0,010	± 0,025	± 0,020	± 0,012	-
0,35	0,40	± 0,020	± 0,015	± 0,010	± 0,025	± 0,020	± 0,012	± 0,040
0,40	0,60	± 0,025	± 0,020	± 0,012	± 0,030	± 0,025	± 0,015	± 0,040
0,60	0,80	± 0,030	± 0,025	± 0,015	± 0,035	± 0,030	± 0,020	± 0,050
0,80	1,00	± 0,030	± 0,025	± 0,015	± 0,035	± 0,030	± 0,020	± 0,060
1,00	1,20	± 0,035	± 0,030	± 0,020	± 0,040	± 0,035	± 0,025	± 0,070
1,20	1,50	± 0,035	± 0,030	± 0,020	± 0,040	± 0,035	± 0,025	± 0,090 ²⁾
1,50	2,00	± 0,045	± 0,035	± 0,025	± 0,050	± 0,040	± 0,030	± 0,110³⁾
2,00	2,50	± 0,045	± 0,035	± 0,025	± 0,050	± 0,040	± 0,030	± 0,130
2,50	3,00	± 0,050	± 0,040	± 0,030	± 0,060	± 0,050	± 0,035	± 0,150
3,00	4,00	± 0,050	± 0,040	± 0,030	± 0,060	± 0,050	± 0,035	-
4,00	6,00	± 0,060	± 0,050	± 0,035	± 0,070	± 0,055	± 0,040	-
6,00	8,00	± 0,075	± 0,060	± 0,040	± 0,085	± 0,065	± 0,045	-
8,00	10,00	± 0,090	± 0,070	± 0,045	± 0,100	± 0,075	± 0,050	-

Measurements in mm.
1) Material hardened by cold rolling or under a commercial agreement
2) Nominal Thickness > 1.20 a 1.60
3) Nominal Thickness > 1.60 a 2.00
4) Low carbon steel for deep drawing and cold forming included in EN 10130:2008. Rest of qualities under inquiry.

WIDTH TOLERANCES

Width tolerances for strips with sheared edges		closer dimensional tolerances are possible under a commercial agreement ¹⁾				Width tolerances according to the EN 10140 Standard for nominal widths of:
Nominal thickness		3-15	15-50	50-150	>150	<125		≥125 Y <250		≥250 Y <600
>=	<	3-15	15-50	50-150	>150	A	B	A	B	A	B
0,1	0,4	± 0,075 ²⁾	± 0,075 ²⁾	± 0,075 ²⁾	± 0,10 ²⁾	± 0,15	± 0,10	± 0,20	± 0,13	± 0,25	± 0,18
0,4	0,7	± 0,085	± 0,09	± 0,10	± 0,12	± 0,15	± 0,10	± 0,20	± 0,13	± 0,25	± 0,18
0,7	1,0	± 0,085 ³⁾	± 0,09 ³⁾	± 0,10³⁾	± 0,12³⁾	± 0,20	± 0,13	± 0,25	± 0,18	± 0,30	± 0,20
1,0	1,5	± 0,10 ⁴⁾	± 0,10 ⁴⁾	± 0,10 ⁴⁾	± 0,15 ⁴⁾	± 0,20	± 0,13	± 0,25	± 0,18	± 0,30	± 0,20
1,5	2,5	on request	± 0,13 ⁵⁾	± 0,15 ⁵⁾	± 0,16 ⁵⁾	± 0,25	± 0,18	± 0,30	± 0,20	± 0,35	± 0,25
2,5	2,6	on request	on request	± 0,16	± 0,175	± 0,25	± 0,18	± 0,30	± 0,20	± 0,35	± 0,25
2,6	4,1	on request	on request	± 0,16	± 0,175	± 0,30	± 0,20	± 0,35	± 0,25	± 0,40	± 0,30
4,1	6,1	on request	on request	± 0,16	± 0,175	± 0,35	± 0,25	± 0,40	± 0,30	± 0,45	± 0,35

Measurements in mm.
1) Other, closer dimensional tolerances on request
2) Including the value t=0.4
3) Including the value t=1
4) Including the value t=1.5
5) Including the value t=2.5

LENGTH TOLERANCES

Length tolerances	Closer tolerances are possible under a commercial agreement	Positive tolerance in relation to the nominal length, according to the EN 10140 Standard for the
Nominal length L		Class A	Class B
L ≤ 1000	+ 2	+ 10	+ 6
1000 < L ≤ 2500	+0.002L	+ 0.01 L	+ 6
L > 2500	+0.002L	+ 0.01 L	+ 0.003 L

Measurements in 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.