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Invar 36, also known as Alloy 36 or UNS K93600, is a specialized iron-nickel alloy used in precision applications due to its low coefficient of thermal expansion. The price of Invar 36 per kilogram can vary significantly depending on several factors, such as market demand, order quantity, form (bar, sheet, plate), and country of purchase. This article explores the current price range, factors influencing cost, and what buyers should consider before purchasing Invar 36 round bar or other forms.
Typical Price Range of Invar 36
The price of Invar 36 per kilogram generally falls within a specific range, depending on the product form and region. Below is a table showing typical price ranges based on global data.
| Product Form | Price Range (USD/kg) | Notes |
|---|---|---|
| Round Bar | $45 – $70 | Higher cost due to machining |
| Plate/Sheet | $40 – $65 | Common for aerospace/cryogenics |
| Wire | $60 – $90 | Precision application, higher margin |
Factors That Influence Invar 36 Pricing
Several factors determine the final price per kilogram of Invar 36:
| Factor | Impact |
|---|---|
| Nickel Market Price | Since Invar 36 contains ~36% nickel, price fluctuates with nickel market rates |
| Manufacturing Complexity | Precision forging, cold working, and annealing raise production cost |
| Product Form | Bar and wire are more expensive due to extra processing |
| Order Quantity | Bulk orders may reduce per-kg pricing |
| Country of Origin | Local taxes, tariffs, and labor costs affect pricing |
Regional Price Differences
Pricing for Invar 36 can vary between suppliers in different regions. The following table gives a general overview of global differences:
| Region | Typical Price (USD/kg) | Remarks |
|---|---|---|
| USA | $50 – $70 | High-quality aerospace-grade material |
| Europe | $55 – $75 | Strict quality standards, certifications included |
| China | $35 – $55 | Lower prices, variable quality |
| India | $40 – $60 | Competitive pricing, wide availability |
How to Get the Best Price
To obtain the most competitive price per kg for Invar 36, consider these strategies:
| Strategy | Description |
|---|---|
| Request Bulk Quotes | Inquire for discounts on large-volume purchases |
| Verify Certifications | Ensure price includes required standards like ASTM, ISO |
| Compare Global Suppliers | Review offers from multiple regions for best value |
| Monitor Nickel Prices | Buy when nickel market is low to reduce cost |
Cost vs. Application Value
While Invar 36 is more expensive than standard stainless steels or carbon steels, its unmatched thermal stability makes it the material of choice in high-precision fields such as aerospace, cryogenics, electronics, and optical systems. The long-term performance often offsets the initial higher price.
Related Questions
How much does Invar 36 cost per kg?
Invar 36 typically costs between $45 and $70 per kilogram for round bar form, depending on supplier and quantity.
Why is Invar 36 so expensive?
The high nickel content and complex processing needed for dimensional stability significantly increase its manufacturing cost.
Where can I buy Invar 36 at the best price?
You can find competitive pricing by comparing suppliers from regions like China and India while ensuring proper quality certifications.