SPCF Cold Steel Appropriate

There are four main processes when it comes to cold rolling. This cold working (hardness) is often called temper, although this has nothing to do with heat treatment temper.
In skin rolling, the metal SPCF cold steel appropriate is reduced by 0.5 to 1% and results in a surface that is smooth and the yield point phenomenon--excessive stretching and wrinkling in subsequent operations, is eliminated. SPCF cold steel appropriate mechanical properties:

STEEL GRADE	Tensile Strength N/mm (min)	Yield Strength N/mm (Max)	Elongation min.
thickness	>0.25	> 0.25	0.25-0.30	0.3-0.4	0.4-0.6	0.6-1.0	1.0-1.6	1.6-2.5	>2.5
SPCF	270	210	-	-	40	42	43	44	45

c. The sample is the P14 sample in GB/T 228 and the sample direction is transverse.

d. When the thickness is less than 0.5mm and more than 1.6mm, r values are not required
e. rm=(r90+2r45+r0)/4

rm=(r90+2r45+r0)/4

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