8Cr14MoV Martensitic Stainless Steel (SUS440B)

8Cr14MoV martensitic stainless steel is a practical stainless steel widely used in knife blades, scissors, cutting tools, and precision components. It offers a balanced combination of hardness, corrosion resistance, wear resistance, and edge stability, making it suitable for both industrial and consumer applications.

With added molybdenum (Mo) and vanadium (V), 8Cr14MoV provides improved wear resistance, cutting performance, and durability. It performs well in humid and mildly corrosive environments, which makes it a reliable choice for products that require stable service life and dependable cutting performance.

Compared with standard 420 stainless steel, 8Cr14MoV provides higher hardness and better wear resistance. It is widely used as a cost-effective knife steel for customers who need good cutting performance, practical corrosion resistance, and stable processing quality.

Martensitic Stainless Steel Applications
Typical Cutting Applications
8Cr14MoV Stainless Steel Equivalent Standards & Specifications
ZEICIN GradeGBASTMJISDIN
8Cr14MoV8Cr14MoV440B-TypeSUS 440B-Type
8Cr14MoV Stainless Steel Chemical Composition %
CCrMnSiMoSPV
0.75-0.8013.50-14.500.20-0.80≤0.800.40-0.50≤0.03≤0.040.10-0.30
8Cr14MoV Stainless Steel Heat Treatment Process

Annealing

Annealing is used to reduce internal stress and improve machinability before hardening.

Quenching

Heat to 1000–1050°C, then cool rapidly to increase hardness and strength.

Tempering

Temper at 150–200°C to improve toughness, reduce brittleness, and support stable service performance.

8Cr14MoV Stainless Steel Product Forms

ZEICIN Steel provides 8Cr14MoV martensitic stainless steel in a wide range of product forms, including round bar, flat bar, square bar, and sheet. Available surface finishes include black, annealed, shot blasted, milled, peeled, centerless, and ground to meet different processing and application needs.

We offer stable quality, consistent mechanical performance, and dependable bulk supply. Customization is available for both size and chemical composition, allowing us to meet specific project and market requirements efficiently.

TypeSpecification (mm)Surface Condition
Round Bar1-50 or CustomizedBlack / Centerless / Turned / Peeled
Flat Bar(3-40)*(12-156)*(2000-5300)Annerled, Shot-Blasted / Milled / Black
Square Bar(6*6)-(180*180)Annerled, Shot-Blasted / Milled / Black
Steel Plate(0.6-12)*(500-1000)*(1000-3000)Black / Sandblasted / Granding
Surface Condition Gallery​

Different surface conditions affect appearance, dimensional accuracy, and machining allowance. The images below show common delivery options (actual products may vary by size and batch).

Why Choose ZEICIN 8Cr14MoV Stainless Steel?
Provides good corrosion resistance and stable hardness for knife and tool applications.
Corrosion Resistance & Stable Hardness
Offers reliable wear resistance and consistent cutting performance in repeated use.
Wear Resistance & Cutting Performance
Maintains dependable edge stability and balanced mechanical properties for daily and industrial use.
Edge Stability & Mechanical Performance
Supports tailored specifications with strict quality control and dependable bulk supply.
Custom Sizes & Reliable Supply
Technical Strength
To ensure stable supply and consistent quality, we focus on R&D and process control for martensitic stainless steels.

ZEICIN STEEL specializes in high-carbon martensitic stainless steels such as 440C. Our focus is on cleaner steel, uniform microstructure, stable heat treatment response, and improved corrosion resistance, ensuring longer service life and consistent batch performance.

National-Level Program & R&D Support

Our R&D team participates in national-level research programs and key science and technology initiatives. With strong institutional support, we continuously advance the development of high-performance martensitic stainless steels, ensuring ongoing innovation and technical improvement.

Advanced Melting & Refining Process

We adopt an advanced melting route of EAF, LF, VD, and RS-ESR. This process improves steel cleanliness, refines carbide distribution, and enhances corrosion resistance and heat treatment stability, resulting in more reliable performance and longer service life.

Martensitic Stainless Steel Capability

We focus on the production and optimization of martensitic stainless steels such as 440C for knife blades, surgical instruments, and precision components. Our materials deliver stable hardness, excellent wear and corrosion resistance, and consistent edge performance in demanding applications.

Awards & Honors Received
LF
Kitchen knife
Honorary certificate
Invention Patent Certificate
Environmental Management System Certification
Invention Patent Certificate
Utility Model Patent Certificate
Packaging & Shipping
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Frequently Asked Questions

Yes. We are a factory. ZEICIN STEEL produces high-quality, cost-effective special steels, including stainless steel, tool & die steel, and high-speed steel. We also have our own import/export license, so we can serve overseas customers directly and support stable supply with batch traceability.

Yes. For first-time cooperation, we can provide a limited quantity of samples for verification (such as grade confirmation, machining trials, or heat-treatment evaluation). Samples can be shipped by international courier, and the courier cost is paid by the buyer. We value honest cooperation and look forward to a long-term win-win partnership.

Our common international payment methods include T/T and L/C. For trade terms, we can also support options such as DDU based on the order. The final payment method and terms can be confirmed according to your country/region, order value, and delivery method.

 

Our products use standard industrial packaging to ensure safe transportation. If you need custom packaging, please let us know when placing your order.

If the products are in stock, delivery usually takes 5–7 days.
If the products are not in stock, delivery time is about 30–40 days, depending on the order quantity.

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Contact us for more information on steel materials and finished products.

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