1.4906 (X12CrMoWVNbN10-1-1) Turbine Blade Steel
Steel Grade Introduction and Applications
FUSHUN SPECIAL STEEL specializes in manufacturing 1.4906 (X12CrMoWVNbN10-1-1) turbine blade steel, a premium martensitic stainless steel engineered for the most demanding power generation applications. This advanced steel grade is specifically designed for high-pressure steam turbine blades, rotors, and critical components in both conventional and nuclear power plants.
As a leading steel manufacturer, FUSHUN SPECIAL STEEL provides 1.4906 steel with exceptional high-temperature strength (Rp0.2 ≥ 750 N/mm² at room temperature) and superior creep resistance at temperatures up to 600°C. Our fully martensitic microstructure after heat treatment ensures optimal performance in the most challenging power generation environments.
This steel grade is equivalent to T505SC (Japanese standard) and is used extensively in steam turbine blades, rotors, and high-temperature fasteners. The material demonstrates excellent long-term creep resistance and maintains structural integrity under extreme operating conditions.
We welcome large-volume orders and provide comprehensive manufacturing solutions for power generation industry clients worldwide.
Chemical Composition
| Element | C | Si | Mn | Cr | Mo | W | V | Nb | N |
|---|---|---|---|---|---|---|---|---|---|
| Content % | 0.11-0.13 | ≤0.12 | 0.40-0.50 | 10.2-10.8 | 1.00-1.10 | 0.95-1.05 | 0.15-0.25 | 0.04-0.06 | 0.045-0.060 |
FUSHUN SPECIAL STEEL maintains strict quality control with melt analysis for all specified elements, ensuring precise chemical composition meeting international turbine blade steel standards.
Available Processing Types
Hot Rolled
FUSHUN SPECIAL STEEL provides hot rolled 1.4906 steel with superior surface quality and dimensional accuracy. Our hot rolling process ensures optimal microstructure for turbine blade applications with controlled grain size (ASTM 4 or finer).
Hot Forged
Our advanced forging capabilities produce high-strength 1.4906 components with refined grain structure and fully martensitic microstructure. Forging temperature range 1100-900°C ensures optimal mechanical properties for turbine applications.
Available Shapes and Forms
Round Bars
Precision round steel bars for turbine shafts and rotors
Flat Bars
High-quality flat steel for turbine blade blanks
Plates
Steel plates for large turbine components
Tubes
Seamless tubes for high-pressure steam applications
Size Capabilities and Dimensions
Hot Rolled Rounds
Maximum diameter: 260mm
Ultrasonic testing for bars ≥30mm diameter per EN 10308
Forged Products
Maximum diameter: 1200mm
Large-scale forging for turbine rotors and critical components
Precision Machining
Ultra-precise dimensions available
In-house turning and grinding capabilities for turbine blade applications
Mechanical Properties
Room Temperature Properties
| Property | 0.2% Proof Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Energy (J) | Hardness (HB) |
|---|---|---|---|---|---|
| 1.4906 | 750-830 | 870-1020 | ≥14 | ≥55 | 270-310 |
High Temperature Performance (600°C)
| Property | 0.2% Proof Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Reduction of Area (%) |
|---|---|---|---|---|
| 1.4906 at 600°C | ≥405 | ≥420 | ≥18 | ≥65 |
Creep and Rupture Properties
Creep Rupture Strength at 600°C:
10,000 hours: ≥100 MPa
100,000 hours: ≥80 MPa (estimated)
Creep Rate: Typically <1×10⁻⁷ %/h at 600°C under 100 MPa stress
Heat Treatment Capabilities
Hardening Process
Temperature: 1050-1100°C
Quenching: Air or liquid cooling
Must be cooled to ≤100°C for complete martensitic transformation
Double Tempering
First temper: 570-680°C
Second temper: 680-720°C
Final condition: Quenched and Tempered (+QT)
FUSHUN SPECIAL STEEL operates advanced heat treatment facilities with precise temperature control ensuring optimal martensitic microstructure and mechanical properties.
FUSHUN SPECIAL STEEL Manufacturing Advantages
In-House Heat Treatment
Complete heat treatment facilities with precise control ensure fully martensitic microstructure and stable quality for turbine applications.
Precision Machining
Advanced turning and grinding capabilities reduce downstream processing time and costs for turbine blade manufacturers.
Quality Assurance
Comprehensive testing including ultrasonic testing, creep rupture testing, and elevated temperature tensile tests ensuring turbine-grade quality.
Large Volume Manufacturing
As a professional steel manufacturer, we welcome large-scale orders for power generation industry with competitive pricing and reliable delivery.
Contact FUSHUN SPECIAL STEEL today for your 1.4906 turbine blade steel requirements. We specialize in large-volume manufacturing with superior quality, complete testing certification, and competitive delivery times for the power generation industry.
