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Reliable GB 4Cr13 steel Supplier & Customizer - Keyspark Steel

When purchasing steel, you may have encountered these problems: No stock in your required size, leading to a one-month wait. Unable to source the exact hardness you need, forcing you to conduct heat treatment on your own. Failed to meet your required machining accuracy, requiring additional outsourcing. If you need GB 4Cr13 steel, Keyspark Steel can solve all these issues for you.

GB 4Cr13 steel is a high-carbon martensitic stainless steel. It features high hardness, excellent wear resistance and good corrosion resistance. Many customers use it for surgical instruments, cutters, molds and bearings.

Keyspark Steel specializes in the supply and customization of GB 4Cr13 steel. Regular sizes are in stock and available for same-day delivery. Custom sizes are supported with a lead time of 45–60 days.

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DIN 1.2316 chemical component test
DIN 1.2316 chemical component test
DIN 1.2316 material test
DIN 1.2316 material test
DIN 1.2316 Spectrometer test
DIN 1.2316 Spectrometer test
DIN 1.2316 quality test
DIN 1.2316 quality test

1. Core Properties

GB 4Cr13 steel has a carbon content of 0.36% – 0.45% and a chromium content of 12% – 14%. These two elements determine its two key properties: high hardness and moderate corrosion resistance.

Hardness:

After quenching and low-temperature tempering (200-250°C), GB 4Cr13 steel can reach 50 – 56 HRC. For higher toughness, high-temperature tempering (600-700°C) is applied, resulting in a hardness of 28 – 34 HRC.

Strength:

After quenching and tempering, the tensile strength is approximately 800 – 1100 MPa, and the yield strength is about 600 – 850 MPa.

Corrosion Resistance:

In a 5% salt spray test, the pitting initiation time is about 80 – 120 hours. GB 4Cr13 steel exhibits good rust resistance in daily environments such as water, oil, weak acids and disinfectants.

2. Stock Inventory and Rapid Customization Capability

  • For steel procurement, delivery time is the top priority. Your machinery cannot stop waiting, and your customers will not accept delayed deliveries. Keyspark Steel fully understands this.
  • We maintain a permanent stock of over 300 tons of GB 4Cr13 steel. Whether you need round bars or thick plates, we can respond immediately.
  • For standard sizes, we promise rapid delivery within 7–15 days. We are also an outstanding custom processor. Many buyers purchase full-length bars and cut them on their own, which is highly costly and wasteful. Keyspark is equipped with more than 20 world-class high-precision CNC sawing machines. We can cut materials precisely to your final part dimensions. This directly reduces scrap waste by approximately 12% at your facility. Purchasing less waste material means increasing your profits directly.
  • Keyspark Steel never compromises on quality. Every batch of GB 4Cr13 steel is strictly tested before delivery. We provide 100% ultrasonic testing to avoid internal defects and offer detailed test reports for each batch, including chemical composition, hardness and metallographic analysis.
     

3. Custom Process: How 45–60 Days Becomes an Advantage?

Lead time for customization is normally 45–60 days. This is not a disadvantage, but controllability.

Our customization processes:

  • Technical confirmation：1–3 days
  • Melting and forging：20–30 days
  • Heat treatment：10–15 days
  • Finishing and inspection(UT/Size/Surface defects/Chemical Composition/Mechanical Properties Test)：10–15 days
The whole process is “produced according to your requirements”. This brings a key result: the material fits your product better, rather than you adapting to the material.

4. How Keyspark Steel Helps You Reduce Procurement Risks

We provide:
 
  • In-stock fast delivery: 5–15 days
     
  • Customized stable delivery: 45–60 days
     
  • Small trial order support
     
  • Application and processing advice
     
  • Quick quotation: within 24 hours
 
This means:
 
  • Less inventory pressure
     
  • Less delivery uncertainty
     
  • Less quality fluctuation

Welcome contact Keyspark Steel now

📋 All you need to do is tell us your application and requirements.
 
🆓 We will help you determine if GB 4Cr13 steel is the best choice. If not, we will directly advise you on a better solution. This evaluation is free of charge.
 
🏭 Keyspark Steel has specialized in special steel for 20 years, with an annual supply capacity of over 50,000 tons.
 
⚙️ We are equipped with a 5,000-ton heavy press, 12 precision heat treatment furnaces, 4 vacuum annealing furnaces, and more than 20 milling, turning and grinding machines.
 
✅ We support customized ESR process. Every batch is supplied with test reports. You buy with clarity and use with confidence.

📩 Contact us now if you need →

📧 Email: Sales@keysparksteel.com
📱 Mobile/WhatsApp: +86 150 2405 6480

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