永久模铸造是利用可重复使用的模具（即所谓的「永久模」，一般以金属制成）的金属铸造制程。利用重力填充模具是最常见的方法，称为重力铸造，不过也有使用气压或真空的制程。重力铸造还有一种变化形式，称为沥铸法，用以产生中空铸件。常用的铸件金属包含铝、镁及铜合金。其他材料如锡、锌及铅合金，还有钢、铁也会使用石墨模具进行铸造。

典型的零件包括齿轮、栓槽、轮圈、齿轮箱、管配件、燃油喷射系统外壳、车辆引擎活塞。

Permanent mold casting is metal casting process that employs reusable molds ("permanent molds"), usually made from metal. The most common process uses gravity to fill the mold, however gas pressure or a vacuum are also used. A variation on the typical gravity casting process, called slush casting, produces hollow castings. Common casting metals are aluminium, magnesium, and copper alloys. Other materials include tin, zinc, and lead alloys and iron and steel are also cast in graphite molds.