| NIHS - Casting Composition of NIHS Color Standard | |||||||||
| Reference Gold Alloy（composition percentage) | |||||||||
| Color Coding | Color Description | Karat | Gold | Silver | Copper | Nickel | Zinc | ||
| 1N-14 | Pale Yellow | 14 | 58.50% | 26.50% | 15.00% | - | - | ||
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| 2N-18 | Pale Yellow | 18 | 75.00% | 16.00% | 9.00% | - | - | ||
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| 3N | Yellow | 18 | 75.00% | 12.50% | 12.50% | - | - | ||
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| 4N | Rose(pink) | 18 | 75.00% | 9.00% | 16.00% | - | - | ||
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| 5N | Red | 18 | 75.00% | 4.50% | 20.50% | - | - | ||
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| 0N | Yellow-Green | 14 | 58.50% | 34.00% | 7.50% | - | - | ||
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| 8N | White | 14 | 59.00% | - | 22.00% | 12.00% | 7.00% | ||
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| NOTE: The above composition is the casting contents of the color standard. It does not represent the actual composition of gold coating. | |||||||||