JIS G 3141 Commercial Cold Rolled SPCC Steels

What is SPCC Steels? SPCC steel is a commercial quality cold rolled steel. SPCC is a material grade and designation defined in JIS G 3141 standard. As a basic Carbon Steel it can be enumerated in dead mild steel.

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What is JIS G 3141? JIS G 3141 is a Japanese material standard for cold rolled steel.

What is Commercial Quality Cold Rolled Steel? The commercial quality cold rolled steel is a type of steel that can be used commercially for forming purposes that can also include shearing of a metallic sheet. Common operations that can be done on such steels are:

  • Bending
  • Curling
  • De-cambering
  • Blanking
  • Shaping
  • Lancing
  • Piercing
  • Notching

Why is SPCC material called cold rolled Steel? When a material grade is specified as cold rolled steel, it means it has been subjected to a manipulative process of cold rolling in which a metal bar is passed through high tension rollers below the re-crystallization temperature of the steel. The roller does not only decrease the thickness of the sheets but also refines the grain structure and hardens the steels.  SPCC steels add more good dimensional properties than SPHC Steels. Also, after the cold rolling process there are some additive processes like rewinding, annealing, and then skin passing to make a complete SPCC material with bright finish.

Available Forms in Market: Following are the available forms of SPCC steels in the global market:

  • Mill Edge Coils
  • Slit Edge Coils
  • Cut to Length Sheetsspcc-steel-cut-to-length-sheets-300x225

Dimensional Characteristics of SPCC Steels: The applicable thickness for this SPCC material as defined in the JIS 3141 starts from 0.25  mm to 2.5  mm or over. However the width of SPCC material ranges to 2000 mm.

The Chemical Composition of SPCC Steels: JIS G 3141 defines the chemical composition of SPCC steels 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 0.050 percent.
  • Maximum percentage of Sulphur (S) is 0.050 percent.

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

Mechanical Properties of SPCC Steels: Following are some of the mechanical properties of SPCC steels:

  • The tensile strength of the SPCC Steels is expressed in Newton per millimeters and it must be at-least 270 N/mm2 (MPa).
  • The elongation property of SPCC steel varies with the ranges of thickness.
  • The minimum percentage ranges for elongation is from 27 to 31 percent starting from 0.25 mm to 2.5 mm and over.
  • The weld ability of these materials is conformed.

Equivalent Material Grades in Other International Standards: Read more about the international standard for commercial quality cold rolled materials in ISO 3574 1999 CR 1 Steels. The International Standard for Cold Rolled Materials ISO 3574 1999 CR 1 Steel 

Applications of SPCC & Commercial Cold Rolled Steels:

  • SPCC Steels are primarily used in automobile parts manufacturing.
  • These are also used in different applications of Construction.
  • SPCC cold rolled steels coils are also consumed in galvanized products, for example GI coils, and color plates etc.
  • These are also extensively used in making of electrical appliances, containers.
  • Pipes and drum manufacturing is also one of the common application of SPCC materials.
  • Moreover the iron armature used in tube lights chalk is also manufactured through SPCC steel.
  • Other common applications of SPCC materials are: fan blades, frying pans, wall mount kits, metal stamping kit,and ceiling mount kit etc. 

Suppliers of SPCC Steels

Suppliers Contact Website Address
Menggeer Metal Material(Tianjin) Co., Ltd 86-22-88451773 http://www.tjmenggeer.com/eng/main/main.asp Room 2126, No. 9, Keda 1st Road, Balitaitaida(Jinnan) Microelectronics Industrial Park, Jinnan District, Tianjin, China (Mainland)
Ten One Material Supply Limited 86 – 0755 – 81980685 Floor 9, Jiangsu Building, Futian District, Shenzhne Shenzhen Guangdong 518000 China
KNM Steel Canada Inc 1-514-6833685 http://steelsupplier.en.ec21.com/ PIERREFONDS PIERREFONDS QUEBEC H9A-3E5 Canada
Three Colors Crafts Development Co.Limited 852-0755-89969981 Flat/Rm. A, 18/F, Kingswell Commercial Tower, 171 Lockhart Road Hong Kong Hong Kong Hong Kong(China)
Daewon Steel Co. Ltd. 82-2-3167675 1295-5, Jungwang-dong, Siheung-si Gyeonggi-do 429-849 Korea

 Learn how SPCC steels can be manufactured from SPHC steels, and how other material grades can be made from SPCC steels in Process Flow Illustration. Customers of SPCC Steels are recommended to know the Quality aspects before buying SPCC coils or sheets.

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Adam Rudolf is a material engineer who has graduated from University of New South Wales, he is a bachelor in Materials engineering. He has also served as an engineer in OneSteels Arrium Mining and Materials Australia. Now a days he is offering his services to materialgrades.com in the form of technical analysis on different materials.

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7 Responses to “JIS G 3141 Commercial Cold Rolled SPCC Steels”

  1. Ranjeet

    Sep 26. 2012

    JIS designation of SPCC is JIS G 3141 but in Chemical compositon it is mentioned JIS G 3131.
    Why???????????????

    Is it same in chemical composition.

    Overall information is much better & easy to understan.
    Thank you

    Reply to this comment
  2. Adam Rudolf

    Sep 26. 2012

    Thanks for question.

    Actually JIS G 3141 is a specification for cold roll material, and JIS G 3131 is a specification for hot roll steel. The chemical composition of SPCC steel is similar to SPHC steels, thats why the chemical composition of JIS G 3131 is referred, however JIS G 3141 is also same.

    Reply to this comment
  3. Ashish

    Mar 01. 2013

    Is SPCC better than SS304? and how does it prevent rust / corrosion / oxidation… powder coating or something else??

    Thank you

    Reply to this comment
    • Andrew Michael

      Mar 06. 2013

      Ashish Thank-you for your question

      For your first question, I must say It depends on the application. SS304 is stainless steel where as SPCC is a mild steel. SS304 steel is utilized in chemical, dairy, food processing, cryogenic vessels, petrochemical, kitchenware and fertilizer industries. SS304 steel is utilized in areas where environment is highly corrosive & SS304 steel is inert in that case due to high rust resistance. SPCC steel is a commerical quality steel and is utilized in applications mentioned in above article.

      SPCC steel is prone to rust & is prevented by oiling on its surface.

      Reply to this comment
  4. jawad afzal sheikh

    Aug 20. 2013

    we are manufacturers of perforated steel sheet and use cold rolled sheet with specification SPCC-SD . can we use SPCC-1B for the same purpose .

    Reply to this comment
    • Andrew Michael

      Aug 20. 2013

      SPCC-1b is a bright finish material & it is full hard, hardness is almost greater than 85 HRB, right now you are using a material below 65 HRB. So if you for a full hard material it can affect your process parameters and the final product & the mechanical properties like Tensile strength will be higher with lower elongation. The second thing is the bright finish if you for the SPCC-SB that is mechanical properties are same but the finish is bright then if you have no coating application like chroma-ting then it is okay to go with bright finish surface.

      Reply to this comment
  5. Yaseen Raza

    Dec 02. 2013

    What are the Hall-Petch Equation constants for SPCG steels?
    If they are not derived, how can we work to obtain them

    Reply to this comment

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