1.4731 X40CrSiMo10-2 Valve Steel – Premium Martensitic Solution
High-Performance SUH3 Valve Steel for Internal Combustion Engines by FUSHUN SPECIAL STEEL
Steel Grade Introduction and Applications
FUSHUN SPECIAL STEEL proudly presents 1.4731 (X40CrSiMo10-2), a premium martensitic valve steel specifically engineered for internal combustion engine applications. This high-performance steel grade complies with EN 10090:1998 standards for valve steels and alloys, making it the preferred choice for automotive and industrial engine manufacturers worldwide.
As a leading manufacturer, FUSHUN SPECIAL STEEL specializes in producing 1.4731 SUH3 valve steel for demanding engine valve applications. Our manufacturing capabilities ensure exceptional heat resistance, wear resistance, and mechanical strength required for high-temperature engine environments. We welcome large-volume orders from automotive manufacturers and engine component suppliers.
Key Applications: Engine exhaust valves, intake valves, valve seats, and other high-temperature engine components requiring superior mechanical properties and oxidation resistance.
Chemical Composition – EN 10090:1998
| Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Nickel (Ni) |
|---|---|---|---|---|
| Content (%) | 0.36 – 0.45 | 2 – 3 | max 0.8 | max 0.5 |
| Element | Sulfur (S) | Chromium (Cr) | Molybdenum (Mo) |
|---|---|---|---|
| Content (%) | max 0.04 | 9.5 – 11.5 | 0.8 – 1.3 |
Precise composition control ensures optimal performance in high-temperature engine environments
Available Processing Types
Hot Rolled
Premium hot rolled 1.4731 valve steel with excellent dimensional accuracy and superior mechanical properties, manufactured using advanced rolling technology for consistent quality.
Hot Forged
Precision hot forged components with optimized grain structure and enhanced mechanical performance, ideal for critical valve applications requiring maximum strength and durability.
FUSHUN SPECIAL STEEL – Your trusted manufacturer for automotive industry large-volume orders with guaranteed quality.
Available Shapes for Valve Manufacturing
Round Bars
Precision round bars for valve stem machining and component manufacturing
Flat Bars
High-quality flat bars for valve head manufacturing and specialized components
Plates
Heavy plates for valve seat manufacturing and large component production
Wire
Precision wire products for specialized valve components and springs
Available Sizes and Custom Manufacturing
Standard Inventory Sizes
FUSHUN SPECIAL STEEL maintains extensive inventory of standard valve steel sizes for immediate delivery to automotive manufacturers. Our comprehensive stock includes common dimensions for all product shapes, ensuring rapid response to urgent production requirements.
Request our current stock list and competitive pricing for bulk orders. As a dedicated manufacturer serving the automotive industry, we specialize in large-volume supply agreements and can provide detailed quotations for annual requirements.
Custom Size Manufacturing
Beyond standard dimensions, FUSHUN SPECIAL STEEL offers comprehensive custom manufacturing services for specialized valve applications. Our advanced production facilities can accommodate unique specifications and dimensional requirements.
Consult our engineering team for custom production capabilities and lead times. We excel in large-scale automotive manufacturing projects and provide complete technical support for your valve steel requirements.
Mechanical Properties (Heat Treated Condition)
| Property | Value | Unit | Condition |
|---|---|---|---|
| Tensile Strength (Rm) | 900-1100 | MPa | +QT |
| 0.2% Proof Strength (Rp0.2) | 700 | MPa | +QT |
| Min. Elongation at Fracture (A) | 14 | % | +QT |
| Reduction in Cross Section (Z) | 40 | % | +QT |
| Brinell Hardness (HB) | 266-325 | HB | +QT |
| Brinell Hardness (HB) | 300 | HB | +A |
Heat Treatment Codes: +QT = Quenched and Tempered, +A = Annealed
Note: Mechanical properties achieve optimal performance after proper heat treatment, ensuring maximum valve service life.
Heat Treatment Specifications
Quenching and Tempering (+QT)
Optimal heat treatment for valve applications requiring maximum strength and toughness. Our controlled quenching and tempering process ensures consistent mechanical properties.
Achieves: 900-1100 MPa tensile strength with excellent ductility
Annealing (+A)
Stress relief annealing for improved machinability and dimensional stability during manufacturing processes.
Achieves: 300 HB hardness for optimal machining characteristics
FUSHUN SPECIAL STEEL Manufacturing Excellence
Advanced Smelting Technology
State-of-the-art ESR (Electroslag Remelting), VIM (Vacuum Induction Melting), and VAR (Vacuum Arc Remelting) technologies ensure ultra-clean steel with superior valve performance characteristics.
Precision Heat Treatment
In-house controlled atmosphere heat treatment facilities with precise temperature control ensure consistent valve steel properties and optimal performance in engine environments.
Automotive Industry Focus
Specialized expertise in automotive valve steel requirements with rapid delivery capabilities and quality assurance programs designed for high-volume automotive production.
Complete Processing Services
Comprehensive machining and surface finishing services reduce downstream processing time and costs, delivering ready-to-use valve steel components to automotive manufacturers.
Automotive Industry Manufacturing Partner
FUSHUN SPECIAL STEEL is your premier manufacturer for 1.4731 X40CrSiMo10-2 valve steel. We specialize in large-volume automotive production with stringent quality control and reliable supply chain management.
Partner with us for your valve steel requirements – contact our automotive sales team today.
Physical Properties
| Property | Value | Unit |
|---|---|---|
| Density | 7.7 | g/cm³ |
Optimal density for valve applications requiring strength-to-weight balance
Ready to Partner? Contact FUSHUN SPECIAL STEEL
Join leading automotive manufacturers who trust FUSHUN SPECIAL STEEL for their 1.4731 valve steel requirements. As your dedicated manufacturer, we provide comprehensive support for large-scale automotive production projects.
Contact our automotive division today for technical consultation and competitive bulk pricing.
