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pm | | Cold Rolling Steel Sheets (13th Dec 22 at 7:23am UTC) | | Applications
With excellent drawing and welding performance and relatively high dimensional accuracy, the cold rolled low carbon steel plates have been widely applied to manufacture of various automotive parts and home appliance parts. In particular the interstitial free steel (IF steel) has been greatly used for extremely hard drawing parts such as inner door plates, luggage boot cover plates and crankcase oil pans for its high value R, value N and percent elongation.
ApplicationFeatureGrades for example
Common quality锛圕Q锛?/p>With enough ductibility, they are suitable to simple forming, bending or welding.DC01 SPCC
Drawing锛圖Q锛?br/>With more ductibility than the common ones, they are suitable to manufacturing parts through drawing and relatively complicated deforming.DC03 SPCD
Deep drawing锛圖DQ锛?br/>With more ductibility and homogeneity than the drawing ones, they are suitable to manufacturing parts through deep drawing and complicated deforming.DC04 SPCE
Extra-deep drawing锛圗DDQ锛?br/>With more ductibility and homogeneity than the deep drawing ones, they are suitable to manufacturing parts through extra-deep drawing and more complicated deforming.DC05 SPCF
Supreme extra-deep drawing锛圫EDDQ锛?br/>With more excellent drawing capability than the extra deep drawing ones, they are suitable to manufacturing parts through supreme extra-deep drawing and extremely complicated deforming.DC06 DC07 SPCG
Steel Grades
StandardsGB/T 5213EN 10130JIS G3141DIN 1623-1
Grade
DC01DC01SPCCSt12
DC03DC03SPCDSt13
DC04DC04SPCESt14
DC05DC05SPCF-
DC06/DC07DC06/DC07SPCG-
Mechanical Properties
Grade
Tensile Testcr9 e
0 n9 e
0
Yield Strengthab
Rel/锛?/strong>MPa锛?/strong> Tensile Stength
Rm/锛?/strong>MPa锛?/strong> Elongation鈮
锛?/strong>A80锛?/strong>锛?/strong>%锛?/strong>
DC01f130锝?60鈮?70鈮?8--
DC03120锝?40鈮?70鈮?4鈮?.3-
DC04120锝?10鈮?70鈮?8鈮?.6鈮?.18
DC05110锝?90鈮?70鈮?0鈮?.9鈮?.20
DC06100锝?80鈮?60鈮?1鈮?.1鈮?.22
DC07100锝?60鈮?50鈮?4鈮?.5鈮?.23
1. Taking RP0.2 in case of indistinct yield, otherwise ReL; When the thickness is less than or equal to 0.7mm and greater than 0.5mm, the yield strength is considered to increase by 20MPa; When the thickness is less than or equal to 0.5mm,the yield strength is considered to increase by 40MPa.
2. By mutual consent, the minimum value of yield strength can be set to 140Mpa for DC01,DC03 and DC04, 120Mpa for DC05 and DC06, 100Mpa for DC07.
3. Using P6 sample by reference to GB/T 228, Perpendicular to the direction of rolling.
4. When the thickness is less than or equal to 0.7mm and greater than 0.5mm, the minimum value for elongation is reduced by 2% (absolute value), when the thickness is less than or equal to 0.5mm, then the minimum value for elongation is reduced by 4% (absolute value).
5. The minimum value for r90 and n90 only apply to products of thickness equal to or greater than 0.5mm; For products with thickness over 2.0mm the minimum r90 value is reduced by 0.2.
6. For DC01 products the upper limit value of the yield strength is valid only for 8 days from the production date.
Tensile Strain Trace
Aging often occurs on low carbon steel and causes steel yield strength increasing and elongation percent decreasing, which may lead to the occurrence of defects such as orange peels and coarse surface during processing. Therefore, it is necessary to specify guarantee time for tensile strain marks of each steel grade. Refer to following table for provisions of tensile strain marks of each steel grade.
Available Size
GradeTensile Strain Trace
DC01
It is guaranteed that no tensile strain trace occurs on steel sheets and coils at their application within 3 months after they are produced and in case of room temperature storage.
DC03
It is guaranteed that no tensile strain trace occurs on steel sheets and coils at their application within 6 months after they are produced and in case of room temperature storage.
DC04
It is guaranteed that no tensile strain trace occurs on steel sheets and coils at their application within 6 months after they are produced and in case of room temperature storage.
DC05
It is guaranteed that no tensile strain trace occurs on steel sheets and coils at their application within 6 months after they are produced and in case of room temperature storage.
DC06/ DC07It is guaranteed that no tensile strain trace occurs on steel sheets and coils at their application in case of room temperature storage.Cold Rolling Steel Sheets
website:http://www.junguan-steel.com/cold-rolled-steel/cold-rolling-steel-sheets/ | |
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