CoinMetalIdentifier
Coin Metal Identifier
Coin Metal Identifier
Input coin weight and dimensions to help identify the metal composition.
Calculate Specific Gravity
Common Coin Metal Reference
| Metal | Composition | Sp. Gravity | US Examples |
|---|---|---|---|
| Copper (pure) | 99.9% Cu | 8.96 | Large cents (1793-1857), half cents |
| Bronze (95/5) | 95% Cu, 5% Sn/Zn | 8.85 | Lincoln cents (1909-1942, 1944-1982) |
| Brass (95/5) | 95% Cu, 5% Zn | 8.60 | Gold-plated tokens, some world coins |
| Copper-Nickel (75/25) | 75% Cu, 25% Ni | 8.92 | Nickels (1866+), clad coinage edges |
| Cupro-Nickel Clad | Cu core, Cu-Ni outer layers | 8.92 | Dimes/Quarters/Half (1965+), SBA/Sac/Pres dollars |
| 90% Silver | 90% Ag, 10% Cu | 10.33 | All US silver coins (1792-1964) |
| 40% Silver | 40% Ag, 60% Cu | 9.53 | Kennedy halves (1965-1970), Eisenhower dollars (1971-1976 S) |
| Sterling Silver | 92.5% Ag, 7.5% Cu | 10.35 | Some commemorative coins, world coinage |
| 90% Gold | 90% Au, 10% Cu | 17.16 | US gold coins (1795-1933), $1-$20 denominations |
| Gold (.999) | 99.9% Au | 19.32 | Modern bullion (American Buffalo, commemoratives) |
| Steel (zinc-coated) | 99% Fe, zinc coating | 7.85 | 1943 Lincoln cent (wartime steel) |
| Zinc-core (Cu-plated) | 97.5% Zn, 2.5% Cu plating | 7.10 | Lincoln cents (1982+) |
| Platinum | 99.95% Pt | 21.45 | Platinum Eagle bullion, some commemoratives |
| Manganese Brass | 77% Cu, 12% Mn, 7% Zn, 4% Ni | 8.00 | Sacagawea/Presidential dollar (2000+) |
Kuamua muundo wa chuma wa sarafu. Tambua dhahabu, fedha, shaba, na metali nyingine zinazotumika katika utengenezaji wa sarafu.
Key Features
Hifadhidata ya utunzi wa chuma
Mwongozo wa kupima msongamano
Utambulisho wa rangi
Aloi habari
Jinsi ya Kutambua Chuma cha Sarafu
Chunguza Rangi
Sarafu za dhahabu ni za dhahabu, sarafu za fedha ni za fedha, sarafu za shaba ni nyekundu
Angalia Uzito
Metali tofauti zina wiani tofauti zinazoathiri uzito
Uso wa Mtihani
Tafuta toning (fedha) au patina inayoonyesha aina ya chuma
Thibitisha Vipimo
Linganisha na vipimo rasmi vya aina hiyo ya sarafu
Use Cases
Kitambulisho cha chuma
Tathmini ya thamani ya mabilioni
Uthibitishaji wa muundo
Utambuzi wa bandia
Frequently Asked Questions
Ninawezaje kujua ikiwa sarafu imejaa dhahabu dhidi ya dhahabu thabiti?
Upimaji wa uzito na wiani unaweza kusaidia. Sarafu za dhahabu imara hukutana na vipimo rasmi vya uzito; sarafu zilizojaa dhahabu ni nyepesi.
Ni metali gani zinazotumika katika sarafu za U.S.
Sarafu za kisasa za U.S. ni vazi la shaba-nikeli au shaba ya manganese. Kwa kihistoria, dhahabu na fedha zilitumika.
Aina ya chuma huathiri thamani ya sarafu?
Ndiyo, maudhui ya chuma ya thamani huongeza thamani kwa kiasi kikubwa. Sarafu za dhahabu na fedha zina thamani zaidi kuliko chuma cha msingi.
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