JIS G4051 S55C Steel Plate
- Alloy or Not: Non-alloy
- Thickness: 6 – 250 mm, or as requested
- Width: 900 – 4800 mm, or as requested
- Length: 3000 – 25000 mm, or as requested
- Technique: Hot Rolled, Cold Rolled, Forged
- Condition: +A/+N/+QT/+HR/+CR, or as requested
- Processing Service: Cutting, Turning, Milling, Drilling, Grinding, etc.
- Certification: ISO 9001
- Inspection: SGS, TUV, Factory Inspection
- Origin: Hubei/Henan/Jiangsu, China
- Port: Qingdao, Tianjin, Lianyungang
- MOQ: 5 tons (or as per negotiation)
- Delivery Time: 8-14 Days
- Payment: T/T, L/C
Product Detail
S55C is a good option if your project requires strength and wear resistance. S55C is a medium-carbon steel commonly used in mechanical parts, valued for its strength and hardness. Its higher carbon content allows for improved performance through heat treatment, which is why it’s often used in components like shafts, gears, and tools in industrial machinery.
Compared to other grades, S55C provides greater strength and hardness, making it a good fit for applications where wear resistance is important. That being said, it has lower toughness than steels like S45C, so it’s best to avoid high-impact conditions. Welding requires attention to prevent cracking, and heat treatment can help improve its toughness and weldability if needed.
Contact us if you are unfamiliar with this product or have questions unsolved.
Features
S55C steel plates could bring the following benefits to your project:
- High Strength – Ideal for manufacturing high-strength mechanical parts.
- Excellent Wear Resistance – Reduces wear, extending the lifespan of equipment.
- Easy to Machine – Suitable for cutting and manufacturing processes.
- Heat Resistant – Performs reliably in high-temperature environments.
- Cost-Effective – Offers good value for money.
- Heat Treatable – Can be heat-treated to enhance mechanical properties.
Applications
Automotive
Crankshafts, gear shafts, connecting rods, suspension components, etc.
Machinery Manufacturing
Machine tool components, hydraulic pistons, axles, gears, etc.
Construction
Structural beams, reinforcement bars, pins and bushings, fasteners, etc.
Aerospace
Aircraft landing gear, engine components, structural frames, control rods, etc.
Oil and Gas
Drilling equipment, valve components, piping systems, tool joints, etc.
Energy
Turbine shafts, power plant components, renewable energy equipment, transformers, etc.
Product Parameters
| Parameter | Details |
|---|---|
| Standard | JIS G4051, ASTM A29, DIN EN 10083-2, GB/T 699, ISO 683-1, etc. |
| Grade | S55C, 1055, C55E, Ck55, 55 |
| Thickness | As requested; 6 – 250 mm; Standard 6/8/10/12/15/20/25/30/40/50 mm |
| Width | As requested; 900 – 4800 mm; Standard 1000/1200/1500/2000 mm |
| Length | As requested; 3000～25000 mm; Standard 2000/2500/3000/4000/6000 mm |
| Thickness Tolerance | ±1%; or as requested |
| Surface Treatment | Nitrided, Hard Chrome Plated, Heat Treated (Quenched and Tempered), PVD Coated, Ceramic Coated, etc. |
| Condition of Delivery | +A/+N/+QT/+HR/+CR, or as requested |
| Testing Method | CCA, HB/HRC/HV, NDT, TST, ITT, etc. |
| Application | Crankshafts, gear shafts, connecting rods, suspension components, machine tool components, hydraulic pistons, structural beams, reinforcement bars, fasteners, drilling equipment, valve components, piping systems, etc. |
| Certification | Approved by ISO 9001 |
| Packaging | Standard seaworthy packing, or as requested |
*Condition of Delivery: A – Annealed, N – Normalized, QT – Quenched & Tempered, HR – Hot Rolled, CR – Cold Rolled
*Testing Method: CCA – Chemical Composition Analysis, HB/HRC/HV – Hardness Testing (Brinell, Rockwell, Vickers), NDT – Non-Destructive Testing, TST – Tensile Strength Testing, ITT – Impact Toughness Testing
Material Specifications
Chemical Composition
| Component | C | Si | Mn | P | S | Cr | Ni | Cu | Others |
|---|---|---|---|---|---|---|---|---|---|
| Wt% | 0.52-0.58 | 0.15-0.35 | 0.6-0.9 | ≤0.03 | ≤0.035 | ≤0.2 | ≤0.2 | ≤0.3 | Ni+Cr≤0.35 |
*According to JIS G 4051-2005.
*After negotiations between both the supplier and buyer, it is permitted that Ni + Cr ≤ 0.45% and Cr ≤ 0.3%.
Mechanical Properties
| Thickness (mm) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Reduction of Area (%) | Impact Toughness AKV (J) | Hardness (HB) | Hardness + Annealed (HB) |
|---|---|---|---|---|---|---|---|
| ≤ 25 | 685 – 835 | ≥ 475 | ≥ 14 | ≥ 40 | – | 201 – 255 | 163 – 197 |
| > 25 | 650 – 810 | ≥ 440 | ≥ 15 | ≥ 40 | – | 197 – 241 | 149 – 183 |
Why Choose Us
Consistent Quality
Common issues you may concern, such as surface defects, uneven hardness, and internal stress, can affect performance. We employ methods such as improved heat treatment, sandblasting, and acid pickling to ensure a flawless surface; optimized uniform heat treatment and annealing for consistent hardness; and controlled slow cooling, segmented cooling, and low-temperature tempering to release internal stress.
Precise Dimensions
We guarantee the dimensional accuracy of our S55C plates in accordance with international standards. We can maintain tight tolerances up to ±0.01 mm through precision equipment and ISO 9001-certified processes. Every batch undergoes 100% inspection, with zero deviation complaints in the past 5 years. We ensure smooth project execution without installation delays.
Stable Supply
We have 3 factories with a combined annual capacity of over 500,000 tons. In the event of any unforeseen circumstances, we can coordinate across factories to ensure stable production and on-time delivery.
Stable & Competitive Pricing
We maintain upstream raw material suppliers with price-lock agreements in place to effectively manage material cost fluctuations. Also, considering that our clients may face pressure from market changes, we will try our best to offer reasonable discounts to both new and existing clients.
Secure Packaging & Shipping
Packaging can be customized according to your requirements. We provide transparent, real-time photos of the packaging and loading process for your verification. You can also choose your trusted freight forwarder for transportation to ensure the entire logistics process is secure and reliable.
About Us
Founded in 1999, SteelPRO Group operates three factories with a combined annual production capacity of over 500,000 tons. We specialize in manufacturing a wide range of steel products, including round steel, profiles, plates, and pipes. Our portfolio encompasses low-alloy structural steel, tool steel, special steel, and more.
With strict adherence to global standards such as GB, ASTM, DIN, EN, and JIS, we ensure high-quality products, including heat-treated, machined, and prestressed steel. Our solutions are trusted by customers in diverse industries, and we proudly export to different countries across Europe, North America, and Asia.
At SteelPRO, we are dedicated to delivering tailored steel solutions and growing alongside our dear clients.
Certification
FAQ
What are your prices?
Our prices are subject to change depending on supply and market conditions. For an accurate and up-to-date quote, please contact our sales team directly.
Can you provide relevant documentation?
Yes, we can provide a wide range of documentation, including Certificates of Analysis/Conformance, Insurance, Certificates of Origin, and any other required export documents.
What is the average lead time?
As per mass production, the lead time is 5-20 days after:
1) we have received your deposit; 2) we have received your final confirmation on your orders.
If our lead time doesn’t meet your deadlines, please contact our sales directly in advance in case of any potential issues. We will try to accommodate your needs in all cases, and we are able to do so in most cases.
Can you provide free samples?
Yes, we can provide free samples for quality evaluation. However, shipping costs are generally covered by your company.
Can I visit your factory?
Of course! You are welcome to visit our factory. Please contact us in advance to arrange a convenient time for your visit, and we will gladly organize a tour and provide any necessary information to ensure a productive visit.
Our Service
SteelPRO Group – manufacturer and solution provider for special steel, offering multi-industry application solutions and customised services, 100% quality free, accompanying customers in their growth!
Our Quality Control
- Roundness
- Tolerance
- Microstructure
- Non-Destructive Testing
- Destructive Testing
- Process Control
Service Integration Processing
- Welding
- Metal Fabrication
- CNC Machining
- Lathe
- Forming
