Pewter Melting Point

Pewter is an alloy, or a combination of metals, each of which has a different melting point. The melting point of pewter varies depending on the alloy composition of the pewter. For example, higher copper alloys (1-2% Cu) will melt at a higher temperature than low copper alloys. Casting alloys typically have a lower copper concentration (~0-.25%) which helps lower the casting temperature and preserve the casting molds.

Spinning Pewter: 92% tin, 7% antimony, 1% copper - Spinning Pewter is easily workable and has a relatively high tensile strength compared to other pewter alloys. It begins to soften at 471 F (244 C) and becomes fully molten at around 563 F (295 C). Casting temperatures are generally above this level to ensure the molten material fills whatever cavity entirely before it begins to solidify, and range from 600 to 645 Degrees F(316-330 D Celsius).

Casting Pewter: 95-99% tin - Casting pewter typically has a higher percentage of tin with the remaining elements being composed of antimony, copper, bismuth, and silver at varying concentrations. Casting pewter is softer, casts at a lower temperature, and produces a better grain structure with fewer voids and defects when cast in rubber or silicone molds. It melts around 455 to 475 and has a casting range of between 500/600 degrees.

To read more about pewter alloys, read All About Pewter Alloys