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C28000 Muntz Metal

ASTM B36, ASME B36, DIN 2.0360, BS 2875 CZ109, EN CW509L

Level 4
Architectural Bronze Color
Level 3
Stronger, Harder & More Rigid Than Brasses of Lesser Zinc
Level 2
May Be Bent or Formed Readily Enough
Level 1
Less Adapted to Cold Work

Farmer’s Copper Ltd. maintains an inventory of C28000 Muntz in sheet and plate.

C280 sometimes referred to as Muntz Metal, nominally contains 60% copper, and 40% zinc. The importance of this alloy is its color, which is essentially that of architectural bronze. Alloy 280 metallographic structure is made of a large portion of beta grains, and so it is stronger, harder, and more rigid than brasses of lesser zinc content. C28000 work hardens rapidly, and so is less adapted to cold work. However, it may be bent or formed readily enough.

Farmer’s Copper Ltd. can offer Muntz Metal cut to your specifications, on our precision plate saws, shears or water jets. Contact one of knowledgeable sales staff today to find out how we can help you with your needs.

Muntz Metal C280 Plate Shapes

Muntz Metal C280 Plate Applications

  • Architectural applications
  • Signage
  • Condenser plates


Farmer’s Copper Ltd. extends its services throughout many industries. We provide the raw copper alloy materials in various standard shapes as well as custom cut copper alloys.

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Our C28000 Muntz Metal Inventory & Properties

Farmer’s diverse inventory of products and services offered provides our customers the largest and most extensive selection of alloys available, cut to precise specifications, and delivered with total quality control.

Chemical Properties

ElementCu (1)PbZnFe
Min %59
Max %630.09Rem0.07

Physical Properties

Melting Point – Liquidus ⁰F1660
Melting Point – Solidus ⁰F1650
Density lb/cu in. at 68⁰F0.303
Specific Gravity8.39
Electrical Conductivity % IACS at 68⁰F28
Thermal Conductivity Btu/sq ft/ft hr/ ⁰F at 68⁰F7
Coefficient of Thermal Expansion 10-6 per ⁰F (68-572 ⁰F)11.6
Specific Heat Capacity Btu/lb/⁰F @ 68 ⁰F0.09
Modulus of Elasticity in Tension ksi15000
Modulus of Rigidity ksi5600

Fabrication Properties

Oxyacetylene WeldingGood
Gas Shielded Arc WeldingFair
Coated Metal Arc WeldingNot Recommended
Spot WeldGood
Seam WeldNot Recommended
Butt WeldGood
Capacity for Being Cold FormedFair
Capacity for Being Hot FormedExcellent
Forgeability Rating90
Machinability Rating40

Mechanical Properties

PLATE SHEET STRIP H02 70 50 10 75   67 44 0.04
H00 60 35 30 55   54 42 0.04
M20 54 21 45   85 49 40 0.04
O60 54 21 45   80 46 40 0.04

Our Commitment to Service

As a leading copper, brass, & bronze alloys supplier, Farmers Copper Ltd. attributes our success to serving our customers, through our service-minded employees and material readily available for prompt, accurate deliveries of copper, brass, bronze, stainless steel and other metal alloys.

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