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C28000 Muntz Metal

C28000 Muntz Metal
C28000 Muntz Metal
Product Code : 01
Product Description
C28000 Muntz Metal












Founded and patented by English businessman George F. Muntz in 1832, Muntz Metal (C28000 or C280) is primarily used in architectural applications owing to its distinctive color. It is highly plastic metal at red heat that makes it ideal for pressing, stamping and hot forging. The metal alloy is also appreciated for high electrical and thermal conductivity, high ductility, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum.

Applications :
Architectural Panels
Large Architectural Trim
Structural Sheets
Door Frames
Decorative Hardware
Condenser plates
Heat Exchanger Tube
Valve Stems
Brazing Rod

Equivalent Specifications:
SPECIFICATIONS DESIGNATION
ISO CuZn40
Europen CuZn40
BS CZ 109
JIS C 2800
Russian L60

Chemical Composition:

Cu Fe Pb Zn
Min/Max 59.0 - 63.0 80.0 - 83.0 0.2 Rem
Nominals 60 - - 40

Fabrication Properties
Joining Technique Suitability
Brazing Excellent
Butt Weld Good
Capacity for Being Cold Worked Fair
Capacity for Being Hot Formed Excellent
Coated Metal Arc Welding Not Recommended
Forgeability Rating 90
Gas Sheilded Arc Welding Fair
Machinability rating 40
Oxyacetylene Welding Good
Seam Weld Not Recommended
Soldering Excellent
Spot Weld Good

Physical Properties
Product Property US Customary Metric
Coefficient of Thermal Expansion 11.6 ·10-6 per oF (68-572 F) 20.9 · 10 6? per °C (20-300 C)
Density 0.303 lb/in3 @ 68 F 8.39 gm/cm3 @ 20 C
Electrical Conductivity 28 %IACS @ 68 F 0.164 MegaSiemens/cm @ 20 C
Electrical Resistivity 37.0 ohms-cmil/ft @ 68 F 6.15 microhm-cm @ 20 C
Melting Point Liquid US 1660 F 904 C
Melting Point Solid US 1650 F 899 C
Modulas of Elasticity in Tension 15000 ksi 103400 MPa
Modulas of Rigidity 5600 ksi 38610 MPa
Specific Gravity 8.39 8.39
Specific Heat Capacity 0.09 Btu/lb/°F @ 68 F 377.1 J/kg · °K at 293 K
Thermal Conductivity 71.0 Btu · ft/(hr · ft2 ·°F) @ 68 F 1229.9 W/m · °K at 20 C

Sizes Available
HOLLOW RODS Min Bore Size 20 mm and Max OD 100 mm
ROUND RODS 6mm To 130 mm
HEX 5mm To 60mm
SQUARE 4mm To 60mm
FLAT 5mm Min Thickness and max Width 120mm
PROFILES / SECTIONS AS per Customer Drawing
BILLETS Up to 200mm
INGOTS AS per Specification

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