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JIS G4051 S50C Steel Plate

We offer JIS G4051 S50C medium-carbon structural steel plates used in machinery manufacturing, shaft components, and molds. Delivery shapes also include round bars, pipes, square steel, forgings, etc., as per your requirements.
  • 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

S50C steel plate is a medium-carbon steel that offers a good balance between strength and hardness, making it a reliable choice for applications like molds, mechanical parts, and tools. It’s straightforward to machine, whether you’re cutting or welding, which is why it’s common in industrial use. With the right heat treatment, you can further enhance its strength and wear resistance for more demanding tasks.

Compared to other grades in the same series, S50C has some clear advantages. It’s tougher than higher carbon steels like S55C, which can become brittle, and it offers more strength than lower carbon options like S45C. This makes it a practical option if you’re looking for something with a balanced combination of strength and durability.

Please note that S50C has relatively low corrosion resistance. In humid or corrosive environments, applying a protective coating or plating would be a smart way to prevent rust and extend its lifespan. 

Contact us if you are unfamiliar with this product or have unanswered questions.

Features

S50C steel plates could bring the following benefits to your project:

  1. High strength – Strong and durable.
  2. Wear resistance – Lasts longer, less maintenance.
  3. Easy to machine – Faster production.
  4. Tough – Less risk of breaking.
  5. Heat-treatable – Can be made even harder.
  6. Versatile – Used in molds, parts, and more.

Applications

Automotive
Gears, shafts, crankshafts, suspension parts, chassis components, etc.

Tooling
Molds, dies, cutting tools, forming tools, etc.

Machinery
Machine parts, spindles, gears, mechanical shafts, etc.

Construction
Structural beams, columns, frames, brackets, etc.

Aerospace
Landing gear components, structural fittings, support frames, etc.

Manufacturing
Press molds, jigs, fixtures, punches, etc.

s50c steel plates
s50c steel plates
s50c steel plates
s50c steel plates
s50c steel plates
s50c steel plates

Product Parameters

ParameterDetails
StandardJIS G4051, ASTM A29, DIN EN 10083-2, GB/T 699, ISO 683-1, etc.
GradeS50C, 1050, C50E, Ck50, 50
ThicknessAs requested; 6 – 250 mm; Standard 6/8/10/12/15/20/25/30/40/50 mm
WidthAs requested; 900 – 4800 mm; Standard 1000/1200/1500/2000 mm
LengthAs requested; 3000~25000 mm; Standard 2000/2500/3000/4000/6000 mm
Thickness Tolerance±1%; or as requested
Surface TreatmentNitrided, 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 MethodCCA, HB/HRC/HV, NDT, TST, ITT, etc.
ApplicationGears, shafts, crankshafts, suspension parts, chassis components, molds, dies, cutting tools, forming tools, machine parts, spindles, mechanical shafts, structural beams, columns, frames, brackets, landing gear components, structural fittings, support frames, press molds, jigs, fixtures, punches, etc.
CertificationApproved by ISO 9001
PackagingStandard 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

ComponentCSiMnPSCrNiCuOthers
Wt%0.47-0.530.15-0.350.6-0.9≤0.03≤0.035≤0.2≤0.2≤0.3Ni+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)HardnessHardness +Annealed
25≥630≥375≥14≥40≥31≤241HB≤207HB

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.

Consistent Quality

Precise Dimensions

We guarantee the dimensional accuracy of our S50C 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.

Precise Dimensions

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 Supply

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.

Stable & Competitive Pricing

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.

Secure Packaging & Shipping

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

CONTACT

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Qingdao,China

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