What is SPC270C Steel?

SPC270C (standard designation: JSC270C) is a commercial-quality cold-rolled carbon steel grade defined under JFS A 2001, the standard issued by the Japan Iron and Steel Federation. It is a widely used general-purpose cold-rolled steel offering a balance of moderate strength, good formability, excellent weldability, and smooth surface finish - at a competitive cost.

Standard note: SPC270C/JSC270C belongs to the JFS A 2001 standard family, not JIS G3141 (which covers the older SPCC–SPCG series). JFS A 2001 introduced the modern naming convention where the number indicates the minimum tensile strength in MPa. The two standards are related but not interchangeable - always specify JFS A 2001 when ordering this grade.

The "JSC" prefix stands for Japan Steel Cold-rolled, the letter "C" denotes commercial quality (the base grade in the series), and "270" represents the minimum tensile strength of 270 MPa. Higher letters in the same series (JSC270D, JSC270E, JSC270F, JSC270G) indicate progressively better drawing quality while maintaining the same strength floor.

The name SPC270C is a transitional designation still commonly used in international trade - it is functionally identical to JSC270C and the two can be used interchangeably.

The following table presents the key mechanical properties of SPC270C/JSC270C per JFS A 2001 (typical values for cold-rolled and annealed condition):

Important: The grade designation "270" denotes tensile strength, not yield strength. The yield strength of commercial-quality cold-rolled steel is typically 50–70% of the tensile strength and is not a guaranteed specification value for this grade. If your application requires a specific yield strength, consider drawing-quality grades (JSC270D/JSC270E) instead.

SPC270C steel is aluminum-killed with tightly controlled chemistry to ensure consistent formability. Key elements (mass fraction, maximum unless noted):

Important: SPC270C/JSC270C under JFS A 2001 has stricter and more clearly defined property ranges than generic SPCC under JIS G3141. When substituting between standards, always compare the full specification sheet - not just the grade name.

SPC270C is the entry-level grade in the JSC270 family. The full series provides increasing drawing capability at the same nominal strength level:

Selection rule: All grades share the same 270 MPa tensile floor. The letter indicates drawing depth capability. Choose the lowest letter that meets your forming requirements to optimize cost.

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SPC270C steel is a high-quality cold-rolled carbon steel grade, primarily compliant with Japanese JIS G 3141 standard, and is essentially equivalent to JSC270C (a revised designation in updated JIS standards). It is a commercial-grade cold-rolled steel with moderate strength (minimum yield strength around 270 MPa) and excellent formability, weldability, and surface quality. Widely used in automotive, home appliance, and general manufacturing fields, it serves as a cost-effective material for components requiring shaping and moderate load-bearing capacity, striking a balance between performance and economy.

SPC270C steel belongs to the SPC series cold-rolled steel, where "S" stands for steel, "P" for cold-rolled, "C" for commercial quality, and "270" indicates its nominal tensile strength level (around 270 MPa). Different from ordinary hot-rolled steel, it undergoes cold rolling processing, resulting in a smooth surface, uniform thickness, and stable mechanical properties-avoiding the surface defects and performance fluctuations of hot-rolled steel. Its low carbon content and optimized chemical composition ensure good ductility and processability, making it suitable for various cold forming processes such as stamping, bending, and shearing. 

The properties of SPC270C steel are optimized for formability and moderate strength, with the following key indicators (compliant with JIS G 3141, simplified for clarity):

Its chemical composition is strictly controlled to ensure performance, with key elements (mass fraction, ≤%): C≤0.12, Si≤0.10, Mn≤0.50, P≤0.035, S≤0.025, and Al≥0.020. The low carbon content ensures good weldability, and microalloy elements like aluminum help refine the grain structure, improving overall toughness.

SPC270C steel is widely used in various fields due to its balanced performance and cost-effectiveness, focusing on components that require formability and moderate strength:

6.1 Automotive Industry: Non-load-bearing structural components such as automotive seat slides, door inner panels, trunk lid inner panels, and small brackets-leveraging its good formability and surface quality.

6.2 Home Appliance Industry: Housings and brackets for household appliances (e.g., washing machines, refrigerators, air conditioners), as well as base components for electronic devices-benefiting from its smooth surface and easy painting/electroplating adaptability.

6.3 General Manufacturing: Metal furniture frames, office equipment parts, light-duty货架, and hardware components-suitable for stamping, bending, and other cold forming processes, meeting mass production needs.

6.4 Other Fields: Precision stamping parts, decorative metal parts, and small structural components that do not require high strength but have strict surface and formability requirements.

SPC270C steel has clear equivalent grades in major global standards, facilitating cross-border procurement and project application. The simplified equivalent table is as follows:

Key Note: JSC270C is the updated designation of SPC270C in Japanese standards, with identical chemical composition and performance-they can be used interchangeably in actual applications.

Gnee Steel (Tianjin) Co., Ltd. supplies SPC270C/JSC270C cold-rolled steel in full compliance with JFS A 2001. Mill test certificates (MTC) are provided as standard, and third-party inspection (SGS, TÜV, Bureau Veritas) is available on request.

Inventory range: Thickness 0.3–3.2mm, width up to 1500mm, coil or cut-to-length sheet
Surface finish: Bright (B) or dull (D) available; oiled or dry
Processing: Slitting, cut-to-length, and surface treatment at our processing center
Shipping: FOB Tianjin/Shanghai; container and bulk vessel options

For a quotation or to request a specification sheet, please contact us:

Email: sale@gneegi.com | WhatsApp/WeChat: +86 15824687445

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1. What is SPC270C steel?

SPC270C is a cold-rolled commercial carbon steel compliant with JIS G 3141 standard, equivalent to JSC270C. It has moderate strength (≈270 MPa yield strength) and excellent formability, widely used in automotive, home appliance, and general manufacturing.

2. What is the difference between SPC270C and SPCC steel?

SPC270C has higher strength than SPCC (yield strength ≈270 MPa vs. SPCC's ≈180 MPa) while maintaining good formability. SPCC is for general low-load components, while SPC270C is suitable for parts requiring moderate load-bearing capacity.

3. Can SPC270C be used for stamping?

Yes. It has excellent formability, suitable for stamping, bending, shearing, and other cold forming processes, and is not prone to cracking during processing.

4. Is SPC270C weldable?

Yes. Its low carbon content ensures excellent weldability, and it can be welded via spot welding, CO₂ gas shielded welding, etc., without special preheating.

5. What is the equivalent of SPC270C in European standards?

The European equivalent is DC01 (ST12) under EN 10130 standard, with similar formability and strength, suitable for cross-border project substitution.

SPC270C steel is a cost-effective cold-rolled commercial steel with moderate strength and excellent formability. Its equivalent relationship with JSC270C and clear global equivalents make it easy to source and apply in international projects. It is an ideal material for mid-range components requiring shaping and moderate load-bearing capacity, widely used in automotive, home appliance, and general manufacturing industries.