1.4875 X55CrMnNiN20-8 EV12 Austenitic Steel – Premium Valve Steel for Internal Combustion Engines
High-Temperature Resistant Valve Steel for Internal Combustion Engine Applications by FUSHUN SPECIAL STEEL
1.4875 X55CrMnNiN20-8 EV12 Valve Steel Introduction and Applications
FUSHUN SPECIAL STEEL is a leading manufacturer of 1.4875 (X55CrMnNiN20-8, EV12) austenitic valve steel specifically engineered for demanding internal combustion engine valve applications. This premium austenitic steel combines excellent high-temperature strength with superior corrosion resistance, making it ideal for intake and exhaust valves in automotive, marine, and industrial engine applications.
As a dedicated manufacturer, FUSHUN SPECIAL STEEL specializes in producing high-quality 1.4875 X55CrMnNiN20-8 EV12 valve steel with optimized nitrogen content for enhanced strength and manganese for improved hardenability. Our advanced melting technologies ensure consistent quality and performance for large-volume production requirements in internal combustion engine valve manufacturing.
Primary EV12 Valve Steel Applications
- Internal combustion engine intake and exhaust valves
- Automotive engine valve components requiring high strength
- Marine engine valves operating in corrosive environments
- Industrial engine valve systems with high-temperature requirements
- Heavy-duty diesel engine valve applications
- Performance engine valves for racing and high-stress applications
1.4875 X55CrMnNiN20-8 EV12 Grade Information
| Property | Value |
|---|---|
| Grade | X55CrMnNiN20-8 |
| Number | 1.4875 |
| Alternative Designation | EV12 |
| Classification | Austenitic Steel |
| Density | 7.8 g/cm³ |
| Standard | EN 10090: 1998 Valve steels and alloys for internal combustion engines |
EN 10090 Compliance: 1.4875 X55CrMnNiN20-8 EV12 valve steel is specifically designed and manufactured according to EN 10090:1998 standards for valve steels and alloys for internal combustion engines, ensuring optimal performance and reliability in engine valve applications.
1.4875 X55CrMnNiN20-8 EV12 Chemical Composition
| C % | Si % | Mn % | Ni % | P % | S % | Cr % | N % |
|---|---|---|---|---|---|---|---|
| 0.5-0.6 | max 0.25 | 7-10 | 1.5-2.75 | max 0.045 | max 0.03 | 19.5-21.5 | 0.2-0.4 |
1.4875 X55CrMnNiN20-8 EV12 Enhanced Composition: High chromium content (19.5-21.5%) provides excellent corrosion resistance. Elevated manganese (7-10%) enhances hardenability and strength. Nitrogen addition (0.2-0.4%) significantly improves yield strength and wear resistance for superior valve performance in internal combustion engines.
1.4875 X55CrMnNiN20-8 EV12 Mechanical Properties
| Property | Value | Condition |
|---|---|---|
| Tensile Strength (Rm) | 900-1150 MPa | +AT |
| 0.2% Proof Strength (Rp0.2) | 550 MPa | +AT |
| Min. Elongation at Fracture (A) | 8 % | +AT |
| Reduction in Cross Section (Z) | 10 % | +AT |
| Rockwell C Hardness (HRC) | 28 | +AT |
Condition: +AT = Solution annealed
1.4875 X55CrMnNiN20-8 EV12 Valve Performance: Excellent tensile strength of 900-1150 MPa combined with minimum yield strength of 550 MPa makes this austenitic steel ideal for internal combustion engine valve applications requiring high strength and reliable performance under thermal cycling conditions.
1.4875 X55CrMnNiN20-8 EV12 Heat Treatment
Solution Annealing (+AT)
Temperature: 1050-1100°C
Cooling: Water quenching
Purpose: Optimal valve properties
Cold Working Enhancement
Process: Controlled deformation
Effect: Increased strength
Application: Valve stems and heads
Austenitic Structure Optimization for EV12 Valve Applications
Solution annealing at 1050-1100°C followed by water quenching optimizes the austenitic structure of 1.4875 X55CrMnNiN20-8 EV12 steel. This treatment dissolves carbides and nitrides, ensuring homogeneous distribution of alloying elements for maximum corrosion resistance and strength in internal combustion engine valve applications.
EV12 Key Properties for Engine Valve Applications
High-Temperature Strength
Excellent strength retention at elevated temperatures makes 1.4875 EV12 ideal for exhaust valve applications where thermal cycling and high-temperature exposure are critical factors in engine performance.
Corrosion Resistance
Superior resistance to corrosion and oxidation in combustion environments. High chromium content (19.5-21.5%) provides excellent protection against aggressive exhaust gases in internal combustion engines.
Nitrogen Strengthening
Controlled nitrogen addition (0.2-0.4%) significantly enhances yield strength and wear resistance without compromising ductility, essential for valve applications requiring long service life.
Processing Types We Provide
Hot Rolled
Premium hot rolled 1.4875 X55CrMnNiN20-8 EV12 valve steel with exceptional dimensional accuracy and superior mechanical properties for engine valve manufacturing. Our manufacturing process ensures consistent nitrogen content distribution.
Hot Forged
Precision hot forged components with optimized grain structure for critical 1.4875 EV12 valve applications. As a manufacturer, we control the entire forging process for superior internal combustion engine valve components.
Available Shapes for EV12 Valve Manufacturing
Round Bars
Precision round bars for 1.4875 EV12 valve stem manufacturing
Flat Bars
High-quality flat bars for valve head manufacturing
Plates
Heavy plates for large engine valve component production
Wire
Precision wire for specialized engine valve applications
Available Sizes and Custom Manufacturing
Standard Inventory Sizes
FUSHUN SPECIAL STEEL maintains comprehensive inventory of standard 1.4875 X55CrMnNiN20-8 EV12 valve steel sizes for immediate delivery to internal combustion engine valve manufacturers. Our extensive stock ensures rapid response to urgent production requirements for large-volume orders.
Request our detailed stock list and competitive pricing for bulk EV12 valve steel orders.
Custom Size Manufacturing
Beyond standard dimensions, FUSHUN SPECIAL STEEL offers comprehensive custom manufacturing services for specialized 1.4875 EV12 valve applications with large-volume requirements for automotive and industrial engine manufacturers.
Consult our engineering team for custom production capabilities and lead times.
FUSHUN SPECIAL STEEL Manufacturing Advantages
Advanced Melting Technology
We operate VIM, ESR, and VAR technologies, ensuring ultra-clean 1.4875 X55CrMnNiN20-8 EV12 valve steel production with precise nitrogen and manganese control for consistent austenitic structure and valve performance.
In-House Heat Treatment
Our heat treatment facilities ensure stable quality and fast delivery times for 1.4875 EV12 valve materials. Complete control over solution annealing processes guarantees optimal austenitic structure for engine valve applications.
Precision Finishing Services
We provide in-house turning and grinding services for 1.4875 EV12 valve products, delivering ready-to-use valve components with superior surface finish and dimensional accuracy for internal combustion engine applications.
Large-Volume Engine Valve Manufacturing
As a leading manufacturer, we welcome large-volume orders for 1.4875 EV12 valve steel and offer competitive pricing for bulk requirements for automotive and industrial engine valve manufacturing projects.
Leading 1.4875 X55CrMnNiN20-8 EV12 Valve Steel Manufacturer
FUSHUN SPECIAL STEEL is your premier manufacturer for 1.4875 X55CrMnNiN20-8 EV12 austenitic valve steel. We deliver advanced nitrogen-strengthened solutions for demanding internal combustion engine valve applications with large-volume manufacturing capabilities according to EN 10090 standards.
Experience the 1.4875 EV12 valve steel advantage – contact our team today.
Ready for 1.4875 X55CrMnNiN20-8 EV12 Valve Steel Excellence?
Join internal combustion engine manufacturers worldwide who trust FUSHUN SPECIAL STEEL for premium 1.4875 EV12 austenitic valve steel solutions. As your dedicated manufacturer, we provide advanced nitrogen-strengthened steel technology with large-volume manufacturing capabilities for automotive and industrial engine applications.
Contact our 1.4875 X55CrMnNiN20-8 EV12 valve steel specialists today for technical consultation and competitive bulk pricing.
