The USA equivalent of Haynes 188 / Alloy 188 (2.4683) is R30188 with a % composition match.
🇺🇸 USA equivalent of
Haynes 188 / Alloy 1882.4683
Standard: UNS · Source: SAE/ASTM
Quick Facts
| Original | 🇺🇸 Equivalent | |
|---|---|---|
| Designation | Haynes 188 / Alloy 188 | R30188 |
| Material Number | 2.4683 | — |
| Standard | AMS 5608 / AMS 5772 | UNS |
| Category | cobalt | cobalt |
Frequently Asked Questions
Is Haynes 188 / Alloy 188 the same as R30188?
Haynes 188 / Alloy 188 (AMS 5608 / AMS 5772) and R30188 (UNS) are near-equivalent grades with a null% composition overlap. Both are cobalt grades. Minor differences may exist in alloying element ranges. For most applications, they are interchangeable. Always verify against the applicable specification for safety-critical components.
Can I substitute Haynes 188 / Alloy 188 with R30188?
In most cases, yes. The chemical composition ranges overlap significantly (null%). However, verify mechanical property requirements for your specific application, as heat treatment practices may differ between AMS 5608 / AMS 5772 and UNS standards.
What is the UNS equivalent of Haynes 188 / Alloy 188?
The UNS equivalent of Haynes 188 / Alloy 188 (2.4683) is R30188, specified in SAE/ASTM.
Other International Equivalents
| Country | Standard | Grade | Match | |
|---|---|---|---|---|
| 🇩🇪 | Germany | EN/DIN | CoCr22Ni22W14 | % |
| 🇺🇸 | USA | AMS | AMS 5608 / AMS 5772 | % |
| 🇺🇸 | USA | Haynes | Haynes 188 | % |
| 🇺🇸 | USA | Aircraft | Udimet 188 | % |
Related Comparisons
Data provided for reference only. Always verify against the applicable specification for critical applications. Source: AMS 5608 / AMS 5772, SAE/ASTM.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.