Low Melt/Fusible Alloys
Fusible Alloys & Ingots
Rotometals supplies a variety of low-melting-point metals that contain a mixture of bismuth, lead, tin, cadmium and/or indium. Also known as cerro metal alloys, these alloys expand only ~3.3% of their volume when changing from liquid to solid form, making them ideal for many industrial applications. They are often used for casting, tube bending, fixturing, machining parts for soft metal dies, anchoring parts, toggle dies and supporting castings and interrupted cuts.
Most of our low-melting, fusible alloys are cast into square ingots measuring approximately 2-3/8" x 2-3/8" x 5/8" . The product names we use are the approximate melting temperatures in degrees Fahrenheit, as they have no definite melting point. These alloys are normally used in gravity casting, but they also can be used in other casting methods.
No matter what type of eutectic alloys you're searching for, Rotometals has the best prices for low-melting, fusible metals on the market. Rotometals is the largest USA-made fusible alloy supplier for a broad range of Tool & Die applications. Take a look at our complete collection for more details, and feel free to contact us today if you have any questions! We're always happy to help you find the right materials for your specific project.
If you need a specially mixed low melt alloy, please contact us for price and lead time.
NOTE: Price is per Ingot.
| Low Melt Alloy Table | |||||||
| Type/Approx. Temp in F/C | Antimony | Bismuth | Cadmium | Lead | Tin | Indium | Silver |
| Roto117F/47C | 0% | 44.70% | 5.30% | 22.60% | 8.30% | 19.10% | 0% |
| Roto136F/58C | 0% | 49% | 0% | 18% | 12% | 21% | 0% |
| Roto140F/60C | 0% | 47.50% | 9.50% | 25.40% | 12.60% | 5% | 0% |
| Roto144F/62C (Field's Metal) | 0% | 32.50% | 0% | 0% | 16.50% | 51% | 0% |
| Roto147F/64C | 0% | 48% | 9.60% | 25.60% | 12.80% | 4% | 0% |
| 0% | 50% | 10% | 26.70% | 13.30% | 0% | 0% | |
| Roto158-190F/70-88C | 0% | 42.50% | 8.50% | 37.70% | 11.30% | 0% | 0% |
| Roto174F/79C | 0% | 57% | 0% | 0% | 17% | 26% | 0% |
| Roto203F/95C | 0% | 52.50% | 0% | 32% | 15.50% | 0% | 0% |
| Roto208F/98C (Rose's Metal) | 0% | 50% | 0% | 25% | 25% | 0% | 0% |
| Roto212F/100C | 0% | 39.40% | 0% | 29.80% | 30.80% | 0% | 0% |
| Roto217-440F/103-227C | 9% | 48% | 0% | 28.50% | 14.50% | 0% | 0% |
| Roto255F/124C | 0% | 55.50% | 0% | 44.50% | 0% | 0% | 0% |
| Roto281F/138C | 0% | 58% | 0% | 0% | 42% | 0% | 0% |
| Roto281-338F/138C-170C | 0% | 40% | 0% | 0% | 60% | 0% | 0% |
| Pewter Solder Bars | 0% | 0% | 0% | 0% | 96% | 0% | 4% |
Now available at Rotometals, Low Melt Alloy Bismuth Tin Balls. There is a minimum 500 pound order, please call with your Bismuth-Tin alloy percentage, required size and amounts and we can give you a quote!
Click here to download the SDS Sheet for the 202F, Roto281F, Roto281-338F (Bismuth and Tin Alloys)
Click here to download the SDS Sheet for Galinstan
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On Sale
Roto281F Low Melt Fusible Bismuth Based Alloy Ingot
Rotometals.com
Now: $31.99Was: $35.88Sold by the IngotAn ingot of Roto281F weighs approximately 1 pound and consists of 58% Bismuth and 42% Tin. This alloy can be used to anchor shafts in permanent Magnesiumnet rotors, locator members in aircraft assembly fixtures, metal parts in glass,...Now: $31.99Was: $35.88 -
On Sale
Lead-free, Fishing Tackle Weight Bismuth-Tin Alloy - 281
Rotometals.com
Now: $31.99Was: $35.88Sold by the IngotOur environmentally friendly Bismuth-Tin alloy is becoming a popular alternative to lead for fish and other weights. The alloy is 58% Bismuth and 42% Tin. It is easy to melt at 281 F and has 75% weight density of lead (0.3158 pounds...Now: $31.99Was: $35.88 -
95% Bismuth 5% Antimony Alloy Ingot
Rotometals.com
$35.99Sold by the Ingot.An ingot of of 95% Bismuth 5% Antimony Ingot dimensions 4" x 1 1/2" x 3/4"$35.99 -
Low Melt Pewter (SN45/BI55) Tin Bismuth Lead Free Made in USA
$35.99A one pound ingot of RotoMetals' Sn 45 %/ Bi 55 % +/- 2% . Our low melt pewter comes in ingot form but has been known to be used as a solder as well. Ingot size is approximately 4" x 1.5" x 5/8" Melts at about 235 F ...$35.99 -
Roto136F Low Melt Fusible Bismuth Based Ingot Alloy Ingot - 1/2 pound per ingot
Rotometals.com
MSRP: $53.99$48.50Sold by the half pound i.e. 1 Quantity = 1/2 Pound #136 Alloy The ingot weighs approximately 1/2 pound and consists of 49% Bismuth, 18% Lead and 12% Tin. Ingot dimensions 4" x 1 1/2" x 3/4" Eutectic Alloy Liquidus: 136F - 58C Solidus: 136F - 58C ...MSRP: $53.99$48.50