MONMET supplies forged and cast components in a vast array of shapes and sizes – from 1 lb. to over 110 tons – using the following alloys:
STEEL:
Carbon Steel: easily forged, carbon steel is harder than stainless steel, and still essentially worked as it was by blacksmiths in previous centuries.
Stainless Steel: a low-maintenance, low-carbon alloy with at least 10% chromium, it "stains less" (i.e., stains, rusts corrodes less) than ordinary steel and is therefore crucial for components in corrosive environments. The chromium film is self-healing.
Duplex Steel: higher in chromium content, duplex steel is more resistant to chloride stress corrosion cracking.
Fact: the pinnacle of New York’s Chrysler Building is one of the most famous examples of stainless steel cladding.
IRON:
Grey Iron: formerly known as cast iron, now made from iron-carbon alloys. Easily worked and inexpensive, it is the most widely used metal in engineering aside from wrought steel, with a final casting renowned for its strength and durability. Believed to be the oldest worked metal.
Ductile Iron: a synthetic metal, the addition of nodulizers magnesium and cerium gives it higher tensile strength and flexibility than grey iron, and greater corrosion resistance than carbon steel. Can be stretched, hammered or drawn without breakage.
Ni-hard Iron: a hard white cast iron containing 4% nickel and 2% chromium, it is renowned for its strength.
Ni-resist Iron: With 20% nickel content, it is especially resistant to heat and corrosion, remaining stable despite changes in environmental temperature.
High Chrome White Iron: high chromium content imparts long wear life and unparalleled resistance to abrasion.
Fact: New York’s SoHo Cast Iron Historic District is so designated for having the world’s highest concentration of cast iron buildings.
BRONZE:
Harder than wrought iron, bronze begins as an alloy of copper and a small percentage of tin (about 12%). It has a lower casting temperature than steel and iron, and resists metal fatigue and corrosion better than steel.
Leaded bronze: with small amounts of lead added, offers great anti-friction and excellent machining properties, along with undiminished bearing capacity and enhanced ability to "wear in."
High-leaded bronze: the addition of 10% to 29% lead greatly enhances lubricity for heavy-duty bushings, bearings and rings in lower-load environments. High lead content allows lead particles to fill in spots on the shaft, while the bearing absorbs dirt or other foreign matter.
Manganese bronze: actually a brass that contains manganese, used in heavy-duty mechanical components, including bearings that withstand high speed and heavy loads.
Aluminum bronze: along with manganese bronze, the strongest and most corrosion-resistant bronze, used in bearing bushes.
Nickel bronze: hardness, strength, ductility and wear-resistance, used in gears and machinery bearings
Fact: A copper frog from Mesopotamia, dating from 3200 B.C., is the oldest known casting.
SPECIALTY ALLOYS:
Titanium: extraordinary tensile strength, lightweight, high corrosion resistance, and ability to withstand extreme temperatures.
Aluminum: lightweight and about one-third as dense as steel or copper, it is malleable, ductile, and easily machined and cast.
Magnesium: lightweight and only two-thirds as dense as aluminum, attractive design properties.
Zinc: noted for its high impact strength.
Monel®: a nickel-based superalloy (along with the ones listed below) boasting great mechanical strength and resistance to high temperatures and creep deformation. Used in components facing highly corrosive conditions.
Inconel®: very resistant to oxidation, corrosion and stress rupture.
Incoloy®: resists corrosion, useful for components subjected to high temperatures.
Waspaloy®: one of the most widely-used wrought superalloys, desirable for gas turbine engine components.
Hastelloy®: resists corrosion by phosphoric acid, sulfuric acid, and oxidizing acid mixtures.
Tungsten: has the highest melting point of all metals.
Cobalt: extraordinary creep resistance.
Fact: Monel is used to make valve pistons in the Bach Stradivarius trumpet.