Cold forming cr low carbon steel_Huangshi Shan Lixing metallurgical sheet Co., Ltd.

One 6-high 5 stand tandem cold rolling mill with capacity of 800,000tpy, its product specification is 0. 2-1.5mm x 700-1250mm. Coil inner diameter is p 508/610mm

and outer diameter max. 2100 mm, min. p1100mm And coil weight is max 25t, Built a 300,000 tons/year continuous annealing line.

Grade, standard dimensions and purpose:

Grade	Standard	Dimension(mm)		Purpose
		Nominal thickness	Nominal width	Suitable for components from common forming to deep drawing forming
DC01、DC03、 DC04、DC05、 DC06、DC07、 SPCCT-SD、 SPCD-SD、 SPCE-SD、 SPCF-SD、 SPCG-SD、高强钢	GB/T 5213-2008 EN 10130:1998 JISG3141:2005	0.2～1.8	700～1250

Chemical composition（Wt%）:

Grade	C	Mn	p	S	Alta	Tib
DC01、SPCCT-S	≤0.12	≤0.60	≤0.045	≤0.045	≥0.020
DC03、SPCD-SD	≤0.10	≤0.45	≤0.035	≤0.035	≥0.020
DC04、SPCE-SD	≤0.08	≤0.40	≤0.030	≤0.030	≥0.020
DC05、SPCF-SD	≤0.06	≤0.35	≤0.025	≤0.025	≥0.015
DC06、SPCG-SD	≤0.02	≤0.30	≤0.020	≤0.020	≥0.015	≤0.30C
DC07	≤0.01	≤0.25	≤0.020	≤0.020	≥0.015	≤0.20C
Note: a)for grade DCO1, DC03, and DCo4, when Cs0.01 then Alt20015
b)for grade DCol, DC03, DC04, DCo5, can add Nb or Ti:
c) Nb can be partly replaced by Ti, while C and N should be kept

Mechanical property

DC01、DC03、DC04、DC05、DC06、DC07

Grade	Yield strength RCL(Mpa)	Tensile strength Rm(Mpa)	Elongation A80mm(%)	Plastic strain ratio r90	Strain harden index n90
DC01	140～280	270～410	≥28
DC03	140～240	270～370	≥34	≥1.4
DC04	120～210	270～350	≥38	≥1.8	≥0.18
DC05	120～180	270～330	≥40	≥2.0	≥0.20
DC06	120～170	270～330	≥42	≥2.1	≥0.22
DC07	100～150	250～310	≥44	≥2.5	≥0.23

SPCCT-SD、SPCD-SD、SPCE-SD、SPCF-SD、SPCG-SD

Grade	Yield strength RCL Relb)(Mpa)	Tensile strength Rm(Mpa)	Plastic strain ratio r90c),d)	Strain harden index n90d)
SPCCT-SD	130～300	270～410
SPCD-SD	120～240	270～370	≥1.3
SPCE-SD	120～210	270～350	≥1.8	≥0.18
SPCF-SD	110～180	270～330	≥2.0	≥0.20
SPCG-SD	100～180	270～330	r≥1.8	n≥0.22

Note：

a) Tensile test here means for transverse sample with length b=25mm, L=50mm

b) When no obvious yield point, re can be replaced with rpoz when product thickness <0.70mm and 2050mm, upper limit of yield strength can be added by 20N/mm, while thickness <0.50mm can add 40 N/mm

c) When product thickness >1.50mm and =2.0mm, value rgo or r can decrease by o 1(absolute value); while >2.0mm then decrease 0.2

d)r90&n90 or r&n only suitable for product with thickness≥0.50mm;r=(r0+r45+r90)/4, n=(r0+r45+r90)/4。