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  • JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet
  • JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet
  • JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet
  • JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet
  • JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet
  • JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet
JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet

JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet

  • 1 - 9 Tons
    $650
  • >= 10 Tons
    $620

Customization:

Customized packaging（Min.Order: 1 pieces）
View product details

JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • High-Strength Structural Support: Engineered from JIS-certified alloy steel grades (SCM420, SCM430, etc.), these hot-rolled steel sheets provide exceptional durability and tensile strength, ideal for boiler plates and heavy machinery components.
  • Versatile Fabrication: Designed for cutting, bending, and coating processes, enabling customization for diverse applications such as structural frameworks, industrial equipment, and high-pressure systems.

Key features

  • 1. Material Technology

    • With high-carbon alloy steel (SCM grades) and hot-rolled treatment, you can achieve exceptional strength and corrosion resistance for boiler plates and structural applications, outperforming standard mild steel*.

  • 2. Customizable Processing Solutions

    • With cutting and bending processing services, you can tailor the steel sheets to specific project requirements (e.g., machinery components or architectural frameworks), reducing secondary processing needs compared to non-modifiable sheets*.

  • 3. Performance Parameters

    • With a thickness range of 4mm–300mm and ±1% tolerance, you can meet diverse structural and industrial demands with precision, surpassing products with limited thickness options or looser tolerances*.

  • 4. Scenario Solutions

    • With high-strength steel plates compliant with boiler plate applications, you can ensure structural integrity in harsh environments (e.g., pressure vessels or heavy machinery), exceeding the durability of lower-grade steel in similar scenarios*.

  • 5. Certification Standards

    • With CE and RoHS certifications, you can guarantee compliance with global safety and environmental regulations, unlike uncertified alternatives that may pose compliance risks*.

Product details

JIS SCM420 SCM430 SCM435 SCM412 SCM415 SCM440 SCM490C SPFC590 Killed Aluminized High Carbon Spring Hot Rolled Steel Sheet

JIS SCM420/SCM430/SCM435/SCM412/SCM415/SCM440/SCM490C SPFC590 killed aluminized high-carbon spring hot-rolled steel sheets are engineered for precision and durability. Designed for boiler plate applications, these sheets comply with global standards (JIS, ASTM, DIN, etc.) and certifications (CE, RoHS). Their high-strength alloy steel composition and customizable processing options make them ideal for structural, industrial, and machinery components.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialJIS SCM grades (SCM420, SCM430, etc.)High-strength structural applications
CertificationCE, RoHSCompliance for EU and global markets
GradeAlloy steel (high-carbon spring steel)Critical load-bearing components
Thickness4mm–30mm / 115mm–300mmCustomized for boilers, machinery, etc.
Tolerance±1%Precision engineering and manufacturing
SurfaceHot-rolled, coatedCorrosion resistance in harsh environments
StandardsJIS, ASTM, DIN, AISI, BS, GBGlobal project compatibility
ProcessingCutting, bendingOn-demand shaping for specific designs

Customization guide

Adjustable parameters include thickness (within 4–300mm range) and dimensions to meet project-specific requirements. Custom coatings or surface treatments can enhance corrosion resistance or aesthetic needs.

Get inspired

These steel sheets are versatile for structural and industrial applications. Their high strength and precision tolerances make them perfect for boiler plates, machinery components, and heavy-duty frameworks. Pair with coatings for added durability in corrosive environments.

Choose your model

ParameterBase Model (SCM420)Advanced Model (SCM430)Pro Model (SCM440)
Tensile Strength700 MPa+15% (805 MPa)+30% (910 MPa)*
Thickness Range4–30mm8–150mm115–300mm
CertificationsCECE + RoHSCE + RoHS + ISO

Supplier's note

  1. Technical Breakthroughs:

    • High-Strength Grades: SCM440’s 910 MPa tensile strength (30% above base) enables safe handling of extreme loads in boilers and pressure vessels.
    • Precision Tolerance: ±1% ensures seamless integration into complex machinery.
    • Global Compliance: Multi-standard certification (JIS/ASTM/DIN) simplifies international projects.

  2. Version Selection Guide:

    • Base Model (SCM420): Ideal for standard boiler plates and lightweight machinery where cost-efficiency is prioritized.
    • Advanced Model (SCM430): Suitable for medium-duty industrial equipment requiring RoHS compliance.
    • Pro Model (SCM440): Best for heavy-duty applications (e.g., high-pressure boilers) needing extreme strength and ISO certification.

With ±1% tolerance, you can ensure precision in manufacturing. With the Pro Model’s triple-certification, you can meet global safety and environmental standards.

*Note: Comparative values are relative to the Base Model’s specifications.

Frequently asked questions

  • Which JIS SCM steel sheet model is best suited for boiler plate applications?

  • How does alloy steel compare to carbon steel for high-strength structural components?

  • What customization options are available for JIS certified high-strength steel sheets?

  • Are Longford's hot rolled steel sheets CE and RoHS certified for industrial use?

  • What thickness options are available for JIS SCM420 steel sheets in heavy machinery applications?

  • How does the hot rolled surface treatment benefit boiler plate steel sheets?

  • What tolerance standards do Longford's high-strength steel sheets meet for precision manufacturing?

  • Can these steel sheets be processed into custom shapes for specialized machinery components?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material/GradeHeavy machinery, boiler construction- Industry Standard: ASTM A20/A20M (0.45% C)
- Our Base: JIS SCM420 (0.55% C)
- Our Advanced: JIS SCM490C (0.63% C ▲)		▲ Advanced grade offers 23% higher tensile strength (ASTM A370) for extreme loadsBase may underperform in ultra-high-stress applications (e.g., aerospace)
Thickness RangeLarge-scale construction, shipbuilding- Industry: ≤25mm (ISO 3801)
- Our Base: 4–30mm
- Our Advanced: 115–300mm ▲ (EN 10029)		▲ Advanced supports ultra-thick plates for offshore platforms (▲ 12x thicker than industry)Base limited to standard structural projects (e.g., bridges)
Tolerance PrecisionPrecision engineering, automotive parts- Industry: ±2% (ISO 2768)
- Base/Advanced: ±1% ▲ (ISO 2768-m3)		▲ 50% tighter tolerance ensures seamless assembly in robotics/electronicsTighter tolerances increase production costs by ~15%
Surface TreatmentCorrosive environments (chemical plants)- Industry: Hot-rolled finish
- Base: Hot-rolled
- Advanced: Aluminized coating ▲ (ASTM A780)		▲ Advanced resists 1000+ hours in salt spray (vs industry’s 200h)Coated surfaces require additional handling precautions during installation
CertificationsGlobal supply chains- Industry: CE
- Base: CE + RoHS
- Advanced: CE + RoHS + ISO 3834 ▲		▲ Advanced meets ASME boiler code (▲ for boiler plate applications)Base lacks ISO 3834 for critical welded structures in Europe
Processing ServicesCustom fabrication (oil rigs, turbines)- Industry: Cutting only
- Base: Cutting + Bending
- Advanced: Cutting + Bending + Punching ▲		▲ Advanced reduces post-processing steps by 40% (▲ for complex geometries)Base requires third-party bending for large-scale projects

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