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Help CenterIron-Nickel Alloy Bar 4J33 in Various Sizes and Diameters for Custom Industrial Applications
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Jiangsu Zhonggongte Metallurgical Technology presents premium Iron-Nickel Alloy Bar 4J33, engineered for precision industrial applications requiring exceptional thermal stability. Our controlled-expansion alloy bars deliver unmatched dimensional consistency across temperature variations, making them ideal for sensitive instrumentation and high-tech manufacturing.
Manufactured under strict ISO9001 quality standards, these bars offer customizable dimensions to fit specialized engineering requirements. With global export capabilities through multiple Chinese ports, we ensure reliable supply chains for North American, European, and Asian industrial markets.
Technical Specifications & Performance Advantages
Material Composition: Iron-Nickel alloy with controlled cobalt content ensuring consistent thermal expansion properties
Thermal Stability: Near-zero thermal expansion coefficient between -60°C to +80°C
Mechanical Properties: Tensile strength 520-650 MPa with excellent machinability characteristics
Surface Finish: Standard polished surface (Ra ≤ 0.8μm) with optional grinding services
| Diameter (mm) | Standard Lengths | Tolerance |
|---|---|---|
| 5-20 | 1000-3000mm | ±0.05mm |
| 21-50 | 500-6000mm | ±0.08mm |
| 51-200 | Custom | ±0.1mm |
Critical applications benefit from 4J33's unique properties:
Hermetic seals in electronic packaging maintain integrity during thermal cycling
Precision optical mounts preserve alignment in temperature-varying environments
Laser components requiring dimensional stability under operational heat loads
Why Choose Our Alloy Solutions
Our manufacturing expertise ensures bars with homogeneous microstructure and consistent mechanical properties throughout the material cross-section. Custom diameter options eliminate unnecessary machining waste, while our quality control protocols include:
Batch-specific thermal expansion coefficient verification
Ultrasonic testing for internal integrity
Full traceability from raw material to finished product
Partner with our metallurgical specialists to develop application-specific solutions. With established logistics networks to 30+ countries and annual export volume exceeding $100M, we deliver technical alloys with reliability you can depend on.
Request custom quotations for project-specific dimensions, or consult our technical team about post-processing services including precision turning, milling, and surface treatment options.
Frequently Asked Questions
Q: What's the thermal expansion coefficient of 4J33 alloy?
A: Typically 6.5×10⁻⁶/°C between 20-400°C, significantly lower than standard steels.
Q: Can you supply bars outside standard diameter ranges?
A: Yes, we accommodate custom diameter requests from 3mm to 250mm through specialized processing.
Q: What certifications accompany shipments?
A: All shipments include material test reports and ISO9001 compliance documentation.
Q: Do you provide machining services for finished components?
A: Secondary processing like CNC turning and milling are available upon request.
Q: What packaging prevents damage during transit?
A: We use moisture-resistant wrapping with wooden crate reinforcement for international shipments.
Q: How does 4J33 compare to Invar alloys?
A: 4J33 offers similar thermal properties with enhanced machinability and cost efficiency.
Q: What's the lead time for custom diameters?
A: Standard production requires 15-25 business days depending on quantity and specifications.
Q: Can you supply smaller quantities for prototyping?
A: Yes, we accommodate R&D and prototype orders with minimum quantity requirements.
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