ISO 3574 Drawing Quality Cold Rolled CR2 Steel

What are CR2 Steels? CR2 steels are drawing quality mild steel implied in ISO 3574 and is graded equivalent to SPCD steels in JIS standard. CR2 Steels are applicable for drawing processes that are applicable for minimal extend.

Dimensional Range of CR2 Steel: CR2 Steels is available from thickness range 0.25 mm to 4.0 mm. The width is usually 950 mm, 1219 mm, 1500 mm and 2000 mm.

Chemical Composition of CR2 Steel:  The chemical composition of CR2 Steels is comprised 0.12 percent of Carbon maximum, 0.5 percent of manganese maximum,  0.035 percent of Sulphur maximum, 0.05 percent of Phosphorous maximum, and remaining percentage is of iron (Fe) with negligible impurities.

Mechanical Properties of CR2 Steel: The mechanical properties of CR2 Steels are comparable to SPCD steels, but unlike the JIS G3141 standard, the ISO 3574 standard does not identify the minimum tensile strength but it identifies the maximum range. The maximum yield strength is 240 MPa, the tensile strength is 370 MPa and minimum elongation is 31 percent. The hardness is 65 HRB maximum.

As compare to CR1 Steel, CR2 grade of steel is more flexible for drawing operations.

 

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