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34CrNiMo6 200mm Bright Square Bar AISI4340 Alloy Steel Square Bar with Polished Surface High Strength for Mold Steel Application
Product Details
| Material Grade | 34CrNiMo6 DIN1.6582 | Carbon Content | 0.30-0.38% |
|---|---|---|---|
| Silicon Content | Max 0.40% | Manganese Content | 0.50-0.80% |
| Chromium Content | 1.30-1.70% | Molybdenum Content | 0.15-0.30% |
| Nickel Content | 1.30-1.70% | Round Bar Diameter | 10-1000mm |
| Square Bar Size | 150×150-500×500mm | Length | 3000-10000mm |
| Tensile Strength | ≥980 MPa | Yield Strength | ≥785 MPa |
| Elongation | ≥9% | Reduction Of Area | ≥40% |
| Impact Test | ≥47 J | ||
| Highlight | Polished Surface Alloy Steel Square Bar,High Strength 34CrNiMo6 Steel Bar,Mold Steel Application AISI4340 Square Bar |
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Product Description
34CrNiMo6 200mm Bright Square Bar - AISI 4340 Alloy Steel
High-quality 34CrNiMo6 (DIN 1.6582) alloy steel square bars manufactured according to EN 10083-3 standards. This nickel-molybdenum alloy steel offers exceptional strength and comprehensive mechanical properties for demanding industrial applications.
Material Specifications
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon | 0.30-0.38 |
| Silicon | Max 0.40 |
| Manganese | 0.50-0.80 |
| Chromium | 1.30-1.70 |
| Molybdenum | 0.15-0.30 |
| Nickel | 1.30-1.70 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥980 MPa (100 kgf/mm²) |
| Yield Strength | ≥785 MPa (80 kgf/mm²) |
| Elongation | ≥9% |
| Reduction of Area | ≥40% |
| Impact Energy (Akv) | ≥47 J |
Available Forms & Sizes
Forged Steel Products
- Round Bars: Diameter 80-1,000mm, Length 3,000-10,000mm
- Square Bars: 150×150-500×500mm, Length 3,000-8,000mm
- Custom forged flat bars, blocks, shafts, and forging pieces available
Rolled Steel Products
- Round Bars: Diameter 10-300mm, Length 3,000-10,000mm
- Custom lengths available upon request
Dimensional Tolerances
- Black surface: -0/+8mm
- Machined surface: -0/+3mm
- Straightness deviation: Maximum 2mm/meter with 360° rotary device
Heat Treatment Processes
Hardening & Tempering
- Heat uniformly to 850°C
- Quench in oil
- Reheat to 550°C and soak for minimum 2 hours
- Cool in furnace
Annealing
- Heat thoroughly to 800-850°C
- Cool slowly to 550°C
- Complete annealing in air
Normalizing
- Heat to 850°C
- Cool to room temperature in air
Quality Certification
- Chemical composition per DIN 7527-6, EN 10250-3
- Complete mechanical properties testing
- Non-metallic inclusions analysis
- Grain size: Minimum 5, preferred 8 (DIN 50601)
- 360° ultrasonic testing per EN 10228-3
- Impact testing on three ISO-V samples at +20°C
Industrial Applications
34CrNiMo6 steel is ideal for high-stress components including transmission systems, tractor motors, automotive parts, and mining equipment. Common applications include:
- High-load shafts and connecting rods
- Carburized gears and pinions
- Engine camshafts and crankshafts
- Bearings and piston rings
- Surface-hardened wear-resistant components
- Oil drilling equipment and mining tools
Forging Guidelines
- Carefully preheat material
- Raise forging temperature to 1150-1200°C
- Maintain temperature above 850°C during forging
Why Choose Our 34CrNiMo6 Alloy Steel?
- Quality Assurance: Materials sourced directly from certified steel manufacturers
- Competitive Pricing: High-quality products at affordable prices
- Fast Delivery: Priority treatment for all orders with shortest lead times
- ISO 9001 Certified: Continuous quality management system improvements
- Comprehensive Services: Cutting, sizing, machining, and heat treatment available
- Flexible Orders: Any size, any length with fast shipping
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