Product Overview
ASTM A283 Carbon Steel Plate is manufactured in accordance with ASTM A283 / ASME SA283 for general structural and low to moderate strength applications. Available in Grades A, B, C, and D, it offers reliable mechanical properties, good weldability, and excellent formability, making it a cost-effective choice for fabrication, construction, and industrial equipment.
- Standard: ASTM A283 / ASME SA283
- Available Grades: A, B, C, D
- Delivery Condition: As Rolled (AR) or Normalized (Optional)
- Equivalent Standards: EN 10025-2 (S235JR), JIS G3101 (SS400), GB/T 700 (Q235B)
Technical Specifications
ASTM A283 Chemical Properties
|
|
Grade A |
Grade B |
Grade C |
Grade D |
|
Carbon, max |
0.14 |
0.17 |
0.24 |
0.27 |
|
Manganese, max |
0.90 |
0.90 |
0.90 |
0.90 |
|
Phosphorus, max |
0.035 |
0.035 |
0.035 |
0.035 |
|
Sulphur, max |
0.04 |
0.04 |
0.04 |
0.04 |
|
Silicon Plates 1 1/2 in and under, max Plates over 1 1/2 in |
0.40 0.15-0.40 |
0.40 0.15-0.40 |
0.40 0.15-0.40 |
0.40 0.15-0.40 |
|
Copper min % when copper steel is specified |
0.20 |
0.20 |
0.20 |
0.20 |
Note: Copper is applicable only when copper steel is explicitly specified in the order.
ASTM A283 Mechanical Properties
|
|
Grade A |
Grade B |
Grade C |
Grade D |
|
Tensile Strength: |
45,000 -60,000 psi [310 - 415 MPa] |
50,000 -65,000 psi [345 - 450 MPa] |
55,000 - 75,000 psi [380 - 515 MPa] |
60,000 -80,000 psi [415 - 550 MPa] |
|
Min. Yield Point: |
24,000psi [165 MPa] |
27,000psi [185 MPa] |
30,000psi [205 MPa] |
33,000psi [ 230 MPa] |
|
Elongation in 8": |
27% min |
25% min |
22% min |
20% min |
|
Elongation in 2": |
30% min |
28% min |
25% min |
23% min |
ASTM A283 Structural Carbon Steel Plate Specifications
|
Parameter |
Details |
|
Standard |
ASTM A283 |
|
Grades |
A, B, C, D |
|
Thickness |
6mm – 200mm |
|
Width |
1000mm – 3500mm |
|
Length |
3000mm – 18000mm |
|
Delivery Condition |
Hot Rolled |
|
Surface |
Black, Shot Blasted, Coated |
|
Certification |
MTC EN10204 3.1 / 3.2 |
Key Features
Low carbon chemistry (C ≤ 0.24% for Gr.C) enables effortless direct welding with standard equipment, eliminating preheating costs.
High ductility (elongation > 23% for Gr.C; Gr.A actual tests reach 35%–38%, exceeding the 30% min standard) allows tight-radius cold bending without edge cracking.
Reliable minimum yield strength of 205 MPa (30 ksi) and tensile strength up to 515 MPa provide robust capacity for storage tanks and structural framing.
Strict adherence to ASTM A6 limits thickness variations for predictable assembly, with high-pressure descaling delivering a clean surface for priming or galvanizing.
Steel Processing Services
Precision CNC Cutting: CNC flame cutting, plasma cutting, and high-precision laser cutting tailored to your CAD drawings.
Beveling & Edge Preparation: Weld seam beveling (V-bevel, X-bevel) ready for immediate job site assembly.
Surface Pre-treatment: Automated shot blasting to Sa 2.5 standard followed by weldable shop priming.
Forming & Bending: Machine roller leveling for superior flatness, plate bending, and rolling into structural shells.
Tolerances & Technical Standards
Dimensional & Weight Tolerances: Strictly executed in according with ASTM A6 / A6M (Class A or Class B options available per contract).
Flatness & Straightness: Machine roller-leveled prior to packing to pass standard flatness tolerances, ensuring smooth performance on automatic CNC laser and plasma cutting beds.
Surface Imperfections: Visual and ultrasonic inspection performed to guarantee freedom from injurious defects, laminations, or internal cracks.
Typical Applications
Storage Tanks & Low-Pressure Vessels: Non-critical liquid storage tanks, oil/water tanks, silo hoppers, and agricultural containment vessels.
Structural Fabrication: Riveted, bolted, or welded structural frameworks, building base plates, structural supports, and bridges.
Industrial Equipment: Machine beds, heavy equipment housings, chutes, bins, and non-pressure industrial components.
Construction & Infrastructure: Trench shoring plates, temporary road plates, and earthmoving machine structural parts.
Quality Assurance & Compliance
EN 10204 3.1 Mill Test Certificate (MTC): Issued with every shipment, detailing heat numbers, chemical analysis, and mechanical test results.
Third-Party Inspection (TPI) Supported: Fully compliant with pre-shipment inspections by independent authorities including SGS, Bureau Veritas (BV), TÜV, and Intertek (NDT/UT testing, chemical re-verification).
System Certifications: Factory operates under ISO 9001:2015 quality management and PED 2014/68/EU compliant production protocols.
Packaging & Ocean Freight Protection
Anti-Rust Protection: Light anti-rust varnish coating, protective oil, or moisture-proof plastic film wrapping.
Heavy-Duty Securing: Bundled with strong steel strapping, corner edge protectors, and wooden pallets/dunnage.
Flexible Shipping Options: Containerized shipping (20ft / 40ft GP/HQ, OT), Flat Rack containers for over-wide plates, or Break-Bulk vessel shipment for bulk tonnage orders.
Inquiry & Ordering Checklist
Grade Required: ASTM A283 Grade C (or A, B, D)
Dimensions: Thickness × Width × Length (in mm or inches)
Total Quantity: Total weight in Metric Tons (MT) or total number of pieces
Processing & Surface Requirements: Unprocessed, Shot Blasted (Sa 2.5), Primed, Beveled, or Cut-to-Size
Destination Port: For accurate maritime freight calculation
Inspection Needs: Standard MTC 3.1, or TPI (SGS/BV) required
FAQ
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