1.3351 Spray Forming High Speed Steel – Premium Tool Steel from FUSHUN SPECIAL STEEL
Steel Grade Introduction and Applications
1.3351 is a premium tungsten-molybdenum spray forming high speed steel grade that delivers exceptional performance for demanding cutting applications. This M4 equivalent high speed steel manufactured using advanced spray forming technology offers superior wear resistance, excellent red hardness, and outstanding toughness. The spray forming process creates an ultra-fine microstructure with homogeneous carbide distribution, resulting in significantly enhanced tool performance and extended service life.
As a leading manufacturer, FUSHUN SPECIAL STEEL specializes in producing high-quality 1.3351 spray forming steel for high-performance cutting tools, precision machining applications, and demanding industrial components in aerospace, automotive, and advanced manufacturing sectors.
Spray Forming Process Advantages
Process Features:
- Rapid Solidification: Ultra-fast cooling creates refined microstructures
- Homogeneous Structure: Eliminates macro-segregation completely
- Near-Net Shape: Reduces material waste by 30-40%
- Enhanced Properties: Superior mechanical performance
Performance Benefits:
- Exceptional Hardness: Superior cutting edge retention
- Outstanding Toughness: Reduced tool breakage risk
- Uniform Carbides: Consistent particle distribution
- Extended Tool Life: Outstanding wear resistance
1.3351 Chemical Composition (wt%)
| Element | C | Cr | W | Mo | V | Co |
|---|---|---|---|---|---|---|
| 1.3351 | 1.4 | 4 | 6 | 5 | 4 | – |
Note: Equivalent to M4, optimized chemical composition for spray forming process to achieve superior microstructural uniformity and enhanced performance characteristics
Physical Properties at Different Temperatures
| Property | 20°C | 400°C | 600°C |
|---|---|---|---|
| Density (kg/m³) | 8140 | 8040 | 8020 |
| Elastic Modulus (MPa) | 232,000 | 208,000 | 186,000 |
| Thermal Expansion (×10⁻⁴/°C) | – | 11.5 | 11.9 |
| Thermal Conductivity | 25 | 29 | 28 |
| Specific Heat (J/kg·°C) | 415 | 500 | 590 |
Heat Treatment Process for 1.3351
Softening Annealing
- Temperature: 860-900°C
- Hold time: 4-6 hours
- Cool to 600°C in furnace
- Hardness: ≤285HB
Stress Relief
- Temperature: 600-700°C
- Hold time: 4 hours
- Slow cooling
- After rough machining
Hardening
- Preheat: 450-500°C
- Austenitize: 1210-1240°C
- Quench in air/oil/salt
- Hardness: 65-67 HRC
Tempering
- Temperature: 540-580°C
- Multiple cycles (2-3x)
- Hold time: 1-2 hours each
- Air cooling
Recommended Heat Treatment for Different Tools:
| Tool Type | Hardening Temp (°C) | Tempering Temp (°C) | Final Hardness (HRC) |
|---|---|---|---|
| Single Point Tools | 1230 | 540-560 | 65-66 |
| Multi Point Tools | 1210-1230 | 550-570 | 64-65 |
| Dies & Punches | 1180-1210 | 560-580 | 62-64 |
Available Forms and Specifications
Coils & Strips
- Thickness: 0.1-4.0mm
- Width: 10-800mm
- Precision tolerance control
- Custom slitting available
Round Bars
- Diameter: 8-350mm
- Length: up to 6000mm
- Ground or turned finish
- Straightness guaranteed
Plates & Flats
- Thickness: 4-120mm
- Width: up to 2500mm
- Length: up to 6000mm
- Surface finish options
Squares & Special Shapes
- Square: 12-250mm
- Rectangular profiles
- Custom dimensions
- Near-net-shape forming
Applications of 1.3351 Spray Forming Steel
High-Performance Cutting Tools
End mills, milling cutters, drill bits, gear cutters, threading tools
Industrial Knives
Steel cutting blades, shear blades, slitting knives
Forming Tools
Cold forming punches, dies, extrusion tools
Precision Components
Aerospace parts, automotive components, wear plates
1.3351 Spray Forming vs Conventional Steel Performance
| Property | Conventional 1.3351 | Spray Forming 1.3351 | Improvement |
|---|---|---|---|
| Hardness | 63-65 HRC | 65-67 HRC | +3-5% |
| Wear Resistance | Standard | Excellent | +30-45% |
| Toughness | Good | Superior | +20-35% |
| Red Hardness | 59-61 HRC@600°C | 61-63 HRC@600°C | +3-5% |
| Tool Life | Baseline | Extended | +35-55% |
| Carbide Uniformity | Acceptable | Excellent | +55-75% |
Technical Advantages of 1.3351 Spray Forming
Steel Properties:
- Superior wear resistance: Uniform carbide distribution
- Excellent red hardness: High temperature performance
- Enhanced toughness: Reduced tool breakage
- Good machinability: Easier processing
- Uniform structure: Consistent properties
Manufacturing Benefits:
- Near-net shape: Minimal material waste
- Cost effective: Reduced processing costs
- Better surface finish: Reduced finishing time
- Dimensional accuracy: Tighter tolerances
- Shorter lead times: Faster delivery
Quality Assurance & Certifications
ISO Certified
International quality standards compliance
Material Testing
Complete chemical & mechanical analysis
Traceability
Full material certificates provided
Technical Support
Expert guidance & application support
Important Notes & Recommendations
1. Material Selection: 1.3351 is ideal for high-performance cutting applications requiring excellent wear resistance and superior red hardness.
2. Machining: Use appropriate cutting parameters and coolants to maximize tool life during machining operations.
3. Heat Treatment: Follow precise heat treatment procedures to achieve optimal hardness. Spray forming steel typically requires slightly adjusted parameters.
4. Storage: Store in dry, controlled conditions to prevent corrosion and maintain surface quality.
About FUSHUN SPECIAL STEEL
FUSHUN SPECIAL STEEL is a leading manufacturer specializing in high-quality 1.3351 spray forming high speed steel production. With decades of experience in metallurgy and advanced manufacturing technologies, we provide superior steel products to customers worldwide. Our state-of-the-art spray forming technology ensures exceptional quality and performance that exceeds industry standards.
Our commitment to innovation and quality has made us a trusted partner for industries requiring premium tool steels. We continuously invest in research and development to improve our production processes and deliver products that exceed customer expectations in performance and reliability.
State-of-the-art spray forming equipment
Worldwide shipping and distribution
Tailored products for specific applications
