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ISO 3574 1999 Commercial Cold Rolled CR 1 Steels

Designation for Commercial Steels

CR1 is the designation for cold rolled commercial steels in the international standard.

Chemical Composition of Commercial Cold Roll Steels: The Chemical Composition of International Commercial Steels:

The chemical composition of Commercial steel CR 1 as defined in International Standard is described as under:

  • Maximum percentage of Carbon (C) is 0.15 percent.
  • Maximum percentage of Manganese (Mn) is 0.60 percent.
  • Maximum percentage of Phosphorous (P) is 0.05 percent.
  • Maximum percentage of Sulphur (S) is 0.035 percent.

Remaining percentage is of iron (Fe) percentage and with few negligible impurities.

The Mechanical Properties of Commercial Steels in International Standard:

Similar to JIS, The international standard defines the tensile strength of materials but it defines the maximum range whereas the JIS defines the minimum range.

  • The maximum tensile strength for HR1 material is 410 MPa.
  • However the elongation is in between 28 percent minimum depending on the material thickness.
  • The material designation is conforming on 180 degree bend on itself.

Read more about the equivalent standard of ISO 3574 1999 CR 1 in JIS G 3141 along with the material suppliers, processes and applications. 

>>JIS G 3141 Commercial Cold Rolled SPCC Steels.

About

Engineer Ali Alvi is an industrial engineer who has post graduated from the NED University, then completed his Masters in Industrial Engineering from the University of Ontario. He has also served as an engineer in International Steel Ltd as A Cold rolling mill engineer.

  1. David Huang says:

    Is 75 Cr1 steel equivalent to JIS SKS51 ?

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