1.4871 X53CrMnNiN21-9 EV12 SUH35 Valve Steel – Premium Austenitic Solution
High-Performance Nitrogen-Enhanced Austenitic Valve Steel for Internal Combustion Engines by FUSHUN SPECIAL STEEL
1.4871 EV12 SUH35 Steel Introduction and Applications
FUSHUN SPECIAL STEEL is a leading manufacturer of 1.4871 (X53CrMnNiN21-9, EV12, SUH35) nitrogen-enhanced austenitic valve steel, specifically engineered for demanding internal combustion engine applications. This premium grade complies with EN 10090:1998 standards for valve steels and alloys for internal combustion engines, incorporating advanced nitrogen enhancement for superior performance characteristics.
As a dedicated manufacturer, FUSHUN SPECIAL STEEL specializes in producing high-quality 1.4871 EV12 SUH35 austenitic valve steel with optimized nitrogen content for enhanced strength and high-temperature stability. Our advanced melting technologies ensure consistent quality and performance for large-volume production requirements.
Primary Applications
- Exhaust valves for internal combustion engines (EV12 grade)
- High-temperature valve components (SUH35 specification)
- Valve seats and valve guides for automotive applications
- Diesel engine valve systems requiring nitrogen enhancement
- Industrial engine applications with extreme temperature requirements
International Grade Equivalents
| EU/EN | USA | Germany | Japan JIS | France | England |
|---|---|---|---|---|---|
| X53CrMnNiN21-9 | EV12 | X53CrMnNiN21-9 | SUH35 | Z52CMN21-09 | 349S54 |
International Recognition: 1.4871 is globally recognized as EV12 in USA standards and SUH35 in Japanese JIS standards, ensuring worldwide compatibility and acceptance in valve manufacturing industries.
1.4871 EV12 SUH35 Chemical Composition – EN 10090:1998
| Carbon (C) | Silicon (Si) | Manganese (Mn) | Nickel (Ni) | Phosphorus (P) |
|---|---|---|---|---|
| 0.48 – 0.58 | max 0.25 | 8 – 10 | 3.25 – 4.5 | max 0.045 |
| Sulfur (S) | Chromium (Cr) | Nitrogen (N) |
|---|---|---|
| max 0.03 | 20 – 22 | 0.35 – 0.5 |
EV12 SUH35 Enhanced Composition: High chromium content (20-22%) ensures excellent oxidation resistance, while optimized nitrogen content (0.35-0.5%) provides exceptional strength enhancement and high-temperature stability for demanding valve applications.
1.4871 EV12 SUH35 Mechanical Properties (Heat Treated Conditions)
| Property | Value | Unit | Condition |
|---|---|---|---|
| Tensile Strength (Rm) | 950-1200 | MPa | +AT |
| 0.2% Proof Strength (Rp0.2) | 580 | MPa | +AT |
| Min. Elongation at Fracture (A) | 8 | % | +AT |
| Reduction in Cross Section (Z) | 10 | % | +AT |
| Rockwell C Hardness (HRC) | 30 | HRC | +AT |
Heat Treatment Code: +AT = Annealed
EV12 SUH35 Performance Advantage: Superior tensile strength of 950-1200 MPa combined with nitrogen enhancement makes 1.4871 ideal for high-stress valve applications in internal combustion engines.
Processing Types We Provide
Hot Rolled
Premium hot rolled 1.4871 EV12 SUH35 with exceptional dimensional accuracy and superior mechanical properties for valve manufacturing applications. Our manufacturing process ensures consistent nitrogen content and quality.
Hot Forged
Precision hot forged components with optimized grain structure and enhanced mechanical performance for critical EV12 SUH35 valve applications. As a manufacturer, we control the entire forging process.
Available Shapes for 1.4871 EV12 SUH35 Manufacturing
Round Bars
Precision round bars for EV12 SUH35 valve stem manufacturing and critical engine components
Flat Bars
High-quality flat bars for valve head manufacturing and specialized SUH35 components
Plates
Heavy plates for valve seat manufacturing and large EV12 engine component production
Wire
Precision wire products for specialized SUH35 valve components and engine applications
Available Sizes and Custom Manufacturing
Standard Inventory Sizes
FUSHUN SPECIAL STEEL maintains comprehensive inventory of standard 1.4871 EV12 SUH35 valve steel sizes for immediate delivery to automotive manufacturers. Our extensive stock ensures rapid response to urgent production requirements and just-in-time delivery schedules for large-volume orders.
Request our detailed stock list and competitive pricing for bulk orders. As a dedicated manufacturer, we welcome large-volume orders and specialize in long-term supply agreements for 1.4871 EV12 SUH35 valve steel requirements.
Custom Size Manufacturing
Beyond standard dimensions, FUSHUN SPECIAL STEEL offers comprehensive custom manufacturing services for specialized 1.4871 EV12 SUH35 valve applications. Our advanced production facilities accommodate unique specifications for automotive OEMs and suppliers with large-volume requirements.
Consult our engineering team for custom production capabilities and lead times for your bulk EV12 SUH35 orders.
FUSHUN SPECIAL STEEL Manufacturing Advantages
Advanced Melting Technology
We operate our own melting facilities with ESR (Electroslag Remelting), VIM (Vacuum Induction Melting), and VAR (Vacuum Arc Remelting) technologies, ensuring ultra-clean 1.4871 EV12 SUH35 steel production with precise nitrogen control for consistent high-end performance.
In-House Heat Treatment
Our own heat treatment facilities ensure stable quality and fast delivery times for EV12 SUH35 materials. Complete control over the heat treatment process guarantees consistent mechanical properties and optimal performance for valve applications.
Precision Finishing Services
We provide in-house turning and grinding services for 1.4871 EV12 SUH35 products, saving downstream customers time and costs. Our precision machining capabilities deliver ready-to-use components with superior surface finish and dimensional accuracy.
Large-Volume Manufacturing
As a leading manufacturer, we welcome large-volume orders for EV12 SUH35 materials and offer competitive pricing for bulk requirements. Our production capacity and supply chain management ensure reliable delivery for major automotive and industrial projects.
Leading 1.4871 EV12 SUH35 Valve Steel Manufacturer
FUSHUN SPECIAL STEEL is your premier manufacturer for 1.4871 X53CrMnNiN21-9 EV12 SUH35 valve steel. We deliver advanced nitrogen-enhanced austenitic solutions for demanding automotive applications with large-volume manufacturing capabilities.
Experience the EV12 SUH35 advantage – contact our team for your bulk valve steel requirements and competitive pricing.
Ready for 1.4871 EV12 SUH35 Excellence? Contact FUSHUN SPECIAL STEEL
Join automotive leaders worldwide who trust FUSHUN SPECIAL STEEL for premium 1.4871 EV12 SUH35 valve steel solutions. As your dedicated manufacturer, we provide advanced nitrogen-enhanced austenitic steel technology with large-volume manufacturing capabilities.
Contact our 1.4871 EV12 SUH35 specialists today for technical consultation and competitive bulk pricing.
