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Low Alloy High Strength CR340LA Steel Coil GMW3032M | Vda 239-100
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SteelPro Group CR340LA coils and sheets allow for thinner and lighter components while maintaining structural integrity due to their high strength. Our products are ideal for automotive manufacturers seeking lightweight yet strong materials for vehicle body construction.
What Is CR340LA Steel?
CR340LA steel is a cold-rolled high-strength low-alloy steel (HSLA) with a minimum yield strength of 340 MPa. This steel grade offers high strength and excellent wear resistance. Combined with superior formability and weldability, CR340LA steel is ideal for automotive body panels and structural components.
Equivalent Grades
- JIS G3135 SPFH340 (Japanese Standard)
- ASTM A1008 or SAE J2340 340LA (North American Standards)
CR340LA Steel Key Features
High Formability: Its reduced carbon concentration and refined grain structure enable shaping into intricate forms without risk of fractures.
Good Weldability: Suitable for resistance and spot welding, essential in automotive manufacturing.
Moderate Strength: It balances strength and ductility, making it ideal for automotive body panels and structural components.
Surface Quality: CR340LA has a smooth surface finish since it is cold-rolled, making it ideal for painted or coated exterior parts.
CR340LA Steel Coils and Sheets Dimensions Range
We provide CR340LA steel coils and sheets in the following size ranges:
- CR340LA Steel Coils
| Dimension | Metric (mm) | Imperial (inches) |
| Thickness | 0.3 – 3.0 | 0.012″ – 0.138″ |
| Width | 800 – 1600 | 31.5″ – 63″ |
| Diameter | 6 m – 30 m | 19.7′ – 98.4′ |
- CR340LA Steel Sheets
| Dimension | Metric (mm) | Imperial (inches) |
| Thickness | 0.3 – 3.5 | 0.012″ – 0.138″ |
| Width | 800 – 1900 | 31.5″ – 78.74″ |
| Length | 2000 – 3000 | 78.7″ – 118.1″ |
We also offer custom dimensions to meet specific automotive manufacturing requirements. Dimensional tolerances are maintained according to industry standards like EN 10268.
CR340LA cold-rolled steel coils and sheets are produced by processing HR340LA hot-rolled steel through cold rolling, reducing thickness and improving surface quality. Annealing after cold rolling further enhances the formability and toughness. The resulting CR340LA steel features better surface smoothness and improved mechanical properties.
CR340LA Steel Chemical Composition
| Element | Typical Range (%) |
| Carbon (C) | ≤ 0.12 |
| Manganese (Mn) | 0.90–1.60 |
| Silicon (Si) | ≤ 0.50 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Titanium (Ti) | ≤ 0.15 |
| Niobium (Nb) | ≤ 0.10 |
| Aluminum (Al) | ≥ 0.015 |
CR340LA Steel Mechanical Properties
| Property | Typical Value |
| Yield Strength | ≥ 340 MPa (≥ 49 ksi) |
| Tensile Strength | 400–520 MPa (58 – 75 ksi) |
| Elongation (A80) | ≥ 20% |
| Hardness(HB) | ~ 120 – 160 HB |
Common Process for CR340LA Steel Coils and Sheets
Machining
SteelPro Group offers customized cutting, stamping, and grinding services for CR340LA Steel:
- Laser Cutting: Provides precise cuts and is ideal for complex shapes. It can handle high-speed cutting with minimal deformation.
- Press Brake Bending: This process uses a press brake machine to bend sheets or plates into the desired angles or shapes. It ensures clean, consistent bends without excessive distortion.
- Roll Bending: Used for creating cylindrical shapes or curves in sheets or plates, ideal for structural components.
- Roll Forming: A continuous bending process used to form CR340LA steel into desired profiles, typically used for making automotive body panels, frames, and other parts.
Surface Treatment
CR340LA steel undergoes surface treatments to enhance its performance, particularly in terms of corrosion resistance, paintability, and durability. Galvanization, phosphating, and e-coating are the most common choices in the automotive sector.
| Surface Treatment | Description | Benefits / Applications |
| HDG | Immersing steel in molten zinc for a thick coating. | Structural automotive parts exposed to elements. |
| EG | Applying zinc via electrochemical process for thin coating. | High-quality painting and aesthetic parts. |
| Phosphating | Applying a phosphate layer, typically zinc phosphate. | Pre-treatment before painting. |
| Passivation | Chemical treatment forming a protective oxide layer. | Increases oxidation and corrosion resistance without altering appearance. |
| Painting or Coating | Electrostatic spraying of powder followed by curing. | Durable, decorative finish. |
| E-Coating | Immersing steel in paint bath with electric current. | Corrosion-resistant coating for high-protection automotive parts. |
Applications of CR340LA Steel Coils and Sheets
Automotive Industry
- Body panels
- Chassis reinforcements
- Crash-resistant components
Structural Applications
- Lightweight structural components requiring good strength and flexibility
- Structural reinforcements in equipment and machinery
Appliance Manufacturing
- Parts requiring a high-quality surface finish and good formability
CR340LA Steel Key Benefits in Automotive Applications
- Lightweight yet strong: Perfect for cutting down vehicle weight, enhancing both fuel economy and overall performance.
- High formability: Enables the creation of intricate forms without risk of fractures or loss of structural integrity.
- Good weldability: Ensures ease of assembly during the manufacturing process.
- Corrosion resistance: Can be enhanced with appropriate surface treatments (e.g., galvanization or e-coating).
- Cost-effective: Offers an optimal blend of efficiency and expense, making it appealing for mass automotive manufacturing.
CR340LA Automotive Steel Reliable Manufacturer
Our CR340LA coils and sheets meet strict global standards and can be customized to exact specifications. We also offer HR420LA steel coils and sheets for higher strength. Our services include laser cutting, precision stamping, and custom roll-forming, etc.
Contact SteelPro Group today for high-performance materials, precision processing, and tailored support designed for automotive excellence.
