Coated steel sheet specifications

Hot dip galvanized steel sheet specifications

Hot dip galvanized steel sheet size specifications

Thickness /mm	0.35、0.40、 0.45	0.50、0.55、0.60、 0.65、0.70	0.75、0.80	0.90、1.0	1.1、1.2	1.3、1.4、 1.5
Repeated bending times	8	7	6	5	4	3
Bending test	d=0（180°angle） d=a（180°angle）			d=a（180°180° angle）		Bend 90°
				Bend 90°
Width/mm×Length/mm	710×1420、750×750、750×1500、750×1800、800×800、800×1200、800×1600、850× 1700、900×900、900×1800、800×2000、1000×2000
Grade	The chemical composition of Q195, Q215A and Q235A complies with the requirements of GB/T700

Note: The weight of zinc layer is 275g/㎡

Hot dip galvanized steel sheet theoretical weight table

Thickness /mm	Width/mm×Length/mm
	710× 1420	750× 750	750× 1500	750× 1800	800× 800	800× 1200	800× 1600	850× 1700	900× 900	900× 1800	900× 2000	1000× 2000
	Theoretical mass/(kg/sheet)(density:7.85)
0.35	2.77	1.54	3.09	3.71	1.76	2.64	3.52	3.97	2.22	4.45	4.94
0.4	3.16	1.77	3.53	4.24	2.01	3.01	4.02	4.54	2. 54	5.09	5.65
0.45	3.56	1.99	3.97	4.77	2.26	3.39	4.52	5.1	2.86	5.72	6.36
0.5	3.96	2.21	4.42	5.3	2.51	3.77	5.02	5.67	3.18	6.36	7.06	7.85
0.55	4.35	2.43	4.86	5.83	2.76	4.14	5.52	6.24	3.5	6.99	7.77	8.64
0.6	4.75	2.65	5.3	6.36	3.01	4.52	6.02	6.8	3.81	7.63	8.48	9.42
0.65	5.14	2.87	5.74	6.89	3.27	4.9	6.53	7.37	4.13	8.27	9.18	10.2
0.7	5.54	3.09	6.18	7.42	3.52	5.28	7.04	7.94	4.45	8.9	9.89	10.99
0.75	5.94	3.31	6.62	7.95	3.77	5.65	7.54	8.51	4.77	9.54	10.6	11.78
0.8	6.33	3.53	7.07	8.48	4.02	6.03	8.04	9.07	5.09	10.17	11.3	12.56
0.9	7.12	3.97	7.95	9.53	4.52	6.78	9.04	10.21	5.72	11.44	12.72	14.13
1	7.91	4.42	8.83	10.6	5.02	7.54	10.04	11.34	6.36	12.72	14.13	15.7
1.1	8.71	4.86	9.71	11.66	5.53	8.29	11.04	12.47	6.99	13.99	15.54	17.27
1.2	9.5	5.3	10.6	12.72	6.03	9.04	12.04	13.61	7.63	15.26	16.96	19.84
1.3	10.29	5.74	11.48	13.78	6.53	9.8	13.06	14.74	8.27	16.53	18.37	20.41
1.4	10.08	6.18	12.36	14.84	7.03	10.55	14.08	15.88	8.9	17.8	19.78	21.98
1.5	11. 87	6.62	13.25	15.9	7.54	11.3	15.08	17.01	9.54	19.07	21.2	23.35

Performance classification and surface treatment classification

Grade	Performance level code	Scope of application	Surface treatment	Symbols
General purpose	1		Passivation	C
Mechanical bonding	2	The zinc layer quality code shall not exceed Z350	Oiling	O
Stamping	3	Thickness range is ≥0.4mm and zinc layer quality shall not exceed Z275	Paint seal	L
Deep drawing	4		Phosphate	P
Special killed steel deep drawing	5		No treatment	U
Non-aging ultra-deep drawing	6
Structural grade	220、250、280、320、 350、400、450、550	Steel plates with thickness < 0.4 mm Not applicable to grades 220, 250, 280 and 320

Grades and chemical compositions of hot-dip galvanized steel sheets and strips

Performance Level	Chemical composition (mass fraction) (%)
	C	Mn	P	s	Ti
1	0.15	0.6	0.035	0.035
2	0.12	0.6	0.035	0.035
3	0.12	0.5	0.03	0.03
4	0.1	0.45	0.025	0.025
5	0.08	0.45	0. 020	0.02
6	0.02	0.25	0.01	0.02	0.3
Structural grade	0.25	1.7	0.05	0.035

Mechanical and process properties of 01~06 grade steel plates and strips

Grade	Zinc layer	Yield strength /MPa	Tensile strength /MPa	Elongation after break/%	r90	n90	Steel base 180° cold bending diameter (d, horizontal)
							Plate thickness (a)
				≤			<3mm	≥3mm
1	Z	–	–	–	–	–	1a	2a
	ZF
2	Z	–	270~500	22	–	–	0	1a
	ZF
3	ZF	140~300	270~420	26	–	–	–	–
4	Z	140~260	270~380	30	–	–	–	–
	ZF
5	Z	140~270	270~350	36	1.6	0.18	–	–
	ZF			34	1.4
6	Z	120~280	270~ 350	39	1.9	0.21	–	–
	ZF			37	1.7	0. 20

Mechanical and process properties of structural grade steel plates

Grade	Yield strength /MPa	Tensile strength /MPa	Elongation after break/%	Steel base 180° bending diameter (d, transverse)
	≥	≥	≥	Plate thickness (a)
				<3mm	≥3mm
220	220	300	20	la	2a
250	250	330	19	la	2a
280	280	360	18	2a	3a
320	320	390	17	3a	3a
350	350	420	16
400	400	470	–	3a	3a
500	500	530	–
550	550	560	–	–	–

Hot dip galvanized steel sheet zinc layer quality

Coating Type	Coating code	Double-sided three-point detection Minimum average value/(g/m2)	Single point detection minimum value/(g/㎡)
			Double-sided	Single-sided
Zinc	(Z60)	(60)	(51)	(24)
	Z80	80	68	32
	Z100	100	85	40
	Z120	120	102	48
	Z150	150	128	60
	Z180	180	153	72
	Z200	200	170	80
	Z220	220	187	88
	Z250	250	213	100
	Z275	275	234	110
	Z350	350	298	140
	Z450	450	383	180
	Z600	600	510	240
Zinc-iron alloy	(ZF40)	(40)	(34)	(16)
	ZF60	60	51	24
	ZF80	80	68	32
	ZF100	100	85	40
	ZF120	120	102	48
	ZF150	150	128	60
	(ZF180)	(180)	(153)	(72)

Hot-dip galvanized aluminum steel sheet specifications

Classification and code of hot-dip galvanized steel sheet

Classification by surface quality	Grade		Code		Coating type, coating surface structure, surface treatment classification and code	Item	Classification	Code
	Ordinary surface		FA			Surface treatment	Complex acid passivation	C
							No glutinous passivation	C5
	Higher-end surfaces		FE				Oiling	O
Coating type, coating surface structure, surface treatment classification and code	Item	Classification		Code			Chromic acid passivation + oiling	CO
							Chromium-free passivation + oiling	CO5
	Coating Type	Aluminum-zinc alloy coating		AZ			Anti-fingerprint film	AF
	Coating surface structure	Ordinary zinc spangle		N			Chrome-free anti-fingerprint film	AF5
							No treatment	U

Hot dipped aluminum zinc steel plate grades and steel type characteristics

Grade	Steel grade characteristics	Grade	Steel grade characteristics
DX51D+AZ	Mild steel or interstitial free steel	S280GD+AZ	Structural Steel
DX52D+AZ		S300GD+AZ
DX53D+AZ		S320GD+AZ
DX54D+AZ		S350GD+AZ
S250GD+AZ	Structural Steel	S550GD+AZ0

Chemical composition of hot-dip aluminum-zinc steel plate

Grade	Chemical composition (melting analysis) (mass fraction) /% ≤
	C	Si	Mn	P	C	Ti
DX51D+AZ	0.12	0.5	0.6	0.1	0.045	0.3
DX52D+AZ
DX53D+AZ
DX54D+AZ
S250GD+AZ	0. 20	0.6	1.7	0.1	0.045
S280GD+AZ
S300GD+AZ
S320GD+AZ
S350GD+AZ
S550GD+AZ

Mechanical properties of hot-dip aluminum-zinc steel plate

Grade	Tensile test
	Yield strength /MPa	Tensile strength /MPa	Elongation after break/%
DX51D+AZ		500	22
DX52D+AZ	300	420	26
DX53D+AZ	260	380	30
DX54D+AZ	220	350	36
S250GD+AZ	250	330	19
S280GD+AZ	280	360	18
S300GD+AZ	300	380	17
S320GD+AZ	320	390	17
S350GD+AZ	350	420	16
S550GD+AZ	550	560

Recommended coating quality of hot-dip aluminum-zinc

Coating Type	Coating form	Recommended nominal coating mass/(g/㎡)	Coating code
Hot-dip aluminum-zinc alloy coating (AZ)	Equal thickness coating	60	60
		80	80
		100	100
		120	120
		150	150
		180	180
		200	200

Equivalent grades of hot-dip aluminum-zinc steel sheet

GB/T 14978-2008	AS	EN 10326:2004	ASTM	JIS	ISO
	1397-2001	EN 10327:2004	A792M-06a	G 3321:2005	9364:2001
DX51D+AZ		DX51D+AZ	CS type B、type C	SGLCC	1
DX52D+AZ	G2+AZ	DX52D+AZ	FS	SGLCD	2
DX53D+AZ	G3+AZ	DX53D+AZ	DS		3
DX54D+AZ		DX54D+AZ	EDDS
S250GD+AZ	G250+AZ	S250GD+AZ	Grade 255		250
S280GD+AZ		S280GD+AZ	Grade 275		280
S300GD+AZ	G300+AZ			SGLC400
S320GD+AZ		S320GD+AZ		SGLC440	320
S350GD+AZ	G350+AZ	S350GD+AZ	Grade 345 Class 1		350
S550GD+AZ	G550+AZ	S550GD+AZ	Grade 550 Class 1	SGLC570	550

Specifications of color-coated steel sheet

Size range of color coated sheets

Item	Nominal size	Item	Nominal size
Thickness/mm	0.20-2.0	Steel plate length	1000~6000
Width/mm×Length/mm	600-1600	Inner diameter of steel coil	450、508 or 610

Classification and codes of color-coated sheets

Classification	Item	Code	Classification	Item	Code
According to use	Building exterior	JW	Classified by coating surface state	Embossed board	YA
	Building interior	JN		Printed board	YI
	Home appliances	JD	Classified by topcoat type	Polyester	PE
	Others	QT		Silicon-modified polyester	SMP
By substrate type	Hot-dip galvanized substrate	Z		High-durability polyester	HDP
	Hot-dip galvanized iron alloy substrate	ZF		Polyvinylidene fluoride	PVDF
	Hot-dip aluminum-zinc alloy substrate	AZ	Classified by coating structure	Two layers on the front and one layer on the back	2/1
	Hot-dip galvanized aluminum alloy substrate	ZA		Two layers on the front and two layers on the back	2/2
	Electro-galvanized substrate	ZE	Classified by hot-dip galvanized substrate surface structure	Polishing small zinc flowers	MS
According to the coating surface state	Coated sheet	TC		Finishing without zinc flower	FS

Grands and uses of color-coated sheets

Color coated steel plate grades					Use
Hot dip galvanized substrate	Hot dip galvanized iron alloy substrate	Hot dip aluminum zinc alloy substrate	Hot dip galvanized aluminum alloy substrate	Electrogalvanized substrate
TDC51D+Z	TDC51D+ZF	TDC51D+ AZ	TDC51D+ZA	TDCO1+ZE	General use
TDC52D+Z	TDC52D+ZF	TDC52D+AZ	TDC52D+ZA	TDCO3+ZE	Stamping
TDC53D+Z	TDC53D+ZF	TDC53D+AZ	TDC53D+ZA	TDC04+ZE	Deep stamping
TDC54D+Z	TDC54D+ZF	TDC54D+ AZ	TDC54D+ZA	–	Extra deep stamping
TS250GD+Z	TS250GD+ZF	TS250GD+AZ	TS250GD+ZA	–	Structural use
TS280GD+Z	TS280GD+ZF	TS280GD+AZ	TS280GD+ZA	–
		TS300GD+AZ		–
TS320GD+Z	TS320GD+ZF	TS320GD+AZ	TS320GD+ZA	–
TS350GD+Z	TS350GD+ZF	TS350GD+AZ	TS350GD+ZA	–
TS5S0GD+Z	TS550GD+ZF	TSSS0GD+AZ	TS550GD+ZA	–

Mechanical properties of hot dip galvanized substrate and color coated sheet

Grade	Yield strength /MPa	Tensile strength /MPa	Elongation after break（L。=80mm,b=20mmm）/% ≥
			Nominal thickness/mm
			≤0.7	>0.70
TDC51D+Z、TDC51D+ZF、TDC51D+ AZ、TDC51D+ZA		270~500	20	22
TDC52D+Z、TDC52D+ZF、TDC52D+ AZ、TDC52D+ZA	140~300	270~420	24	26
TDC53D+Z、TDC53D+ZF、TDC53D+ -AZ、TDC53D+ZA	140~260	270~380	28	30
TDC54D+Z、TDC54D+AZ、TDC54D+ ZA	140~220	270~350	34	36
TDC54D+ZF	140~220	270~350	32	34
TS250GD+Z、TS250GD+ZF、TS250GD+ AZ、TS250GD+ZA	250	330	17	19
TS280GD+Z、TS280GD+ZF、TS280GD+ AZ、TS280GD+ZA	280	360	16	18
TS300GD+AZ	300	380	16	18
TS320GD+Z、TS320GD+ZF、TS320GD+ AZ、TS320GD+ZA	320	390	15	17
TS350GD+Z、TS350GD+ZF、TS350GD+ AZ、TS350GD+ZA	350	420	14	16
TS550GD+Z、TS550GD+ZF、TS550GD+ AZ、TS550GD+ZA	550	560	–	–

conclusion

Coated steel is a kind of steel with strong corrosion resistance but competitive price. It is widely used and suitable for a variety of commercial buildings and industrial applications. At Wanzhi Steel, we can provide coated steel products suitable for your application. You can refer to the above table to find the coated steel specifications you need and leave us a message to send inquiry information.