CMW® 73 Copper Alloy

Login to see your most recently viewed materials here. Or if you don't have an account with us yet, then click here to register.

CMW® 73 Copper Alloy (discontinued **)
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	CMW® 73 material is a heat treatable copper base alloy having extremely high hardness and strength coupled with fair electrical and thermal conductivity. The extremely high hardness, strength and wear resistance is obtained in both cast and wrought material largely by means of heat treatment. It is generally useful where high stress is encountered or where high abrasion resistance is desired but where temperatures are not excessive. The annealing temperature is somewhat less than for other heat treatable high strength copper base alloys. The hardness of CMW® 73 material in the fully heat treated condition is sufficiently high to make machining somewhat difficult particularly in drilling and tapping of small holes. Where extensive machining or forming is to be done, CMW® 73 material can be supplied in the solution annealed (soft) condition and then hardened by a simple heat treatment following machining. CMW® 73 material is useful where extremely high hardness, strength and abrasion resistance is required. It may be advantageously used for certain flash and projection welding dies where high mechanical properties are required but where current density and heat are not excessive. Many of the steel strip flash welders in continuous steel strip mills are equipped with CMW® 73 die facings. The high hardness and abrasion resistance of CMW® 73 material makes it ideally suited for current carrying collets, chucks, bearings and shafts. Current carrying structural members of CMW® 73 material provide extremely high strength. Information provided by CMW Inc. 1
Vendors:

Available Properties

Density
Hardness, Rockwell C, Rod & Bar
Hardness, Rockwell C, Casting
Hardness, Rockwell C, Forging
Tensile Strength, Ultimate, Castings
Tensile Strength, Ultimate, Bar, Rod & Forgings
Tensile Strength, Yield, Castings
Tensile Strength, Yield, Bar, Rod & Forgings
Elongation at Break, Castings
Elongation at Break, Rod & bar
Elongation at Break, Forging
Modulus of Elasticity
Fatigue Strength, casting
Fatigue Strength, Forging
Fatigue Strength, Rod & Bar
Electrical Resistivity, Forgings (23 % IACS)
Electrical Resistivity, Drawn Rod & Bar (22% IACS)
Electrical Resistivity, Castings (20 % IACS)
CTE, linear
Thermal Conductivity
Melting Point
Solidus
Liquidus
Softening Point, Permanent Softening
Beryllium, Be
Co + Ni
Copper, Cu

Property Data

This page displays only the text
of a material data sheet.

To see MatWeb's complete data
sheet for this material (including
material property data, metal
compositions, material suppliers,
etc), please click the button below.

Manufacturer Notes:
CMW Inc.

Category Notes
none

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

Users of our Advanced Search (registration required) may exclude discontinued materials from search results.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

	Advertise with MatWeb!
	Data sheets for over 180,000 metals, plastics, ceramics, and composites.
	HOME • SEARCH • TOOLS • SUPPLIERS • FOLDERS • ABOUT US • FAQ • LOG IN

System Message