Galvanised sheet

Galvanised sheet is a steel sheet that has undergone a hot immersion process that 100% coats )coats it with zinc )the sheet with zinc, in order to prevent corrosion. The zinc coating chemically joins the steel base by means of a metallurgical chemical reaction between the zinc and the steel at 450ºC.

On removing the steel from the bath several surface layers of zinc-iron alloy are formed on which the zinc has solidified. These are harder than the steel base. The treatment must be in accordance with ISO 1461 (Galvanised iron and steel coatings).

Cold-rolled products are in low carbon steel for cold forming or cold rolling (UNE EN 10346:2010), and are supplied in the following formats:

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Thickness (mm)	Length (mm)	Width (mm)
0,6	2000 / 2500 / 3000	1000 / 1250 / 1500
0,8	2000 / 2500 / 3000	1000 / 1250 / 1500
1,0	2000 / 2500 / 3000	1000 / 1250 / 1500
1,2	2000 / 2500 / 3000	1000 / 1250 / 1500
1,5	2000 / 2500 / 3000	1000 / 1250 / 1500
2,0	2000 / 2500 / 3000	1000 / 1250 / 1500
2,5	2000 / 2500 / 3000	1000 / 1250 / 1500
3,0	2000 / 2500 / 3000	1000 / 1250 / 1500

Symbolic	Numerical	Types of coatings available	Elastic limit Reª MPa	Resistance to traction Rm MPa	Lengthening A80^b min %	Plastic Anisotropy Coefficient Ryo min	Strain hardening coefficient n90 min
DX51D	1.0226	+Z, +ZF, +ZA, +AZ, +AS	–	270 a 500	22	–	–
DX52D	1.0350	+Z, +ZF, +ZA, +AZ, +AS	140 a 300	270 a 420	26	–	–
DX53D	1.0355	+Z, +ZF, +ZA, +AZ, +AS	140 a 260	270 a 380	30	–	–
DX54D	1.0306	+Z, +ZA	120 a 220	260 a 350	36	1,6	0,18
DX54D	1.0306	+Z, +ZA	120 a 220	260 a 350	34	1,4	0,18
DX54D	1.0306	+Z, +ZA	120 a 220	260 a 350	36	–	–
DX54D	1.0306	+Z, +ZA	120 a 220	260 a 350	34	1,4	0,18
DX55D	1.0309	+ZS	140 a 240	270 a 370	30	–	–
DX56D	1.0322	+Z, +ZA	120 a 180	260 a 350	39	1,9	0,21
DX56D	1.0322	+ZF	120 a 180	260 a 350	37	1,7	0,20
DX56D	1.0322	+Z, +ZA	120 a 180	260 a 350	39	1,7	0,20
DX57D	1.0853	+Z, +ZA	120 a 170	260 a 350	41	2,1	0,22
DX57D	1.0853	+ZF	120 a 170	260 a 350	39	1,9	0,21
DX57D	1.0853	+AS	120 a 170	260 a 350	41	1,9	0,21

a. If the elastic limit is not pronounced, the values refer to the conventional elastic limit at 0.2% or Rp0.2. If the elastic limit is pronounced, the values apply to the lower elastic limit ReL.

b. The minimum lengthening values fall 4 units for thicknesses t ≤ 0.50 mm and 2 units for thicknesses between 0.50 mm < 1 ≤ 0.70 mm.

c. This value applies only to skin passed products (surface ratings B and C).

d. For < 1.50 mm, the minimum r90 value falls 0.2

e. For < 0.70 mm, the minimum r90 value falls 0.2 and the minimum n90 value falls by 0.01.

f. The minimum stretch for DX55D+AS products that do not follow the systematic order must be indicated. The steel, DX55D+AS has better thermal resistance.

Chemical composition (analysis of the cast) of carbon steels for cold casting:

Symbolic	Numerical	Types of coatings available	Max C. %	Max Mn %	Max Mn %	Max P %	Max S %	Max Ti %
DX51D	1.0226	+Z, +ZF, +ZA, +AZ, +AS	0,18	0,50	1,20	0,12	0,045	0,30
DX52D	1.0350	+Z, +ZF, +ZA, +AZ, +AS	0,12	0,50	0,60	0,10	0,045	0,30
DX53D	1.0355	+Z, +ZF, +ZA, +AZ, +AS	0,12	0,50	0,60	0,10	0,045	0,30
DX54D	1.0306	+Z, +ZF, +ZA, +AZ, +AS	0,12	0,50	0,60	0,10	0,045	0,30
DX55D	1.0309	+AS	0,12	0,50	0,60	0,10	0,045	0,30
DX56D	1.0322	+Z, +ZF, +ZA, +AS	0,12	0,50	0,60	0,10	0,045	0,30
DX57D	1.0853	+Z, +ZF, +ZA, +AS	0,12	0,50	0,60	0,10	0,045	0,30