MoldStar®18 Information

MoldStar^®18
Continuous Cast Aluminum Bronze Rod/Bar/Tube

(See MoldStar^®22 for Extruded Bronze Product)

Description

A continuous cast aluminum-iron-copper alloy (UNS-95400) meeting the minimum requirements of ASTM Standards. The excellent resistance of MoldStar^®18 alloy to wear and abrasion is available in continuous tube, round rod, and rectangular bar.

These characteristics make MoldStar^®18 an ideal for bushings, tie bar nuts, bearings, gears, worm gears, and similar applications.

Chemistry

Copper	85.5%
Aluminum	10.5%
Iron	3.5%

Mechanical Properties*
Proportional Limit (ksi)	18.5
Compressive Strength-Ultimate (ksi)	.136
Fatigue Strength (ksi @ l0⁸ cycles)	36
Impact -Charpy Keyhole (ft.-lbs.)	15
Izod (ft.-lbs.)	22
Modulus of elasticity (ksi)	16,000
Poissan's Ratio	.316
*Based on 1" dia. test bars

Physical Properties
Density (lbs./in.³)	.269
Specific Gravity	7.45
Specific Heat (Btu/lb./⁰F)	.10
Coefficient of Thermal Expansion (in./in./⁰F)	9.0 x 10^-6
Electrical Conductivity (% IACS)	13
Electrical Resistivity (Microhms-Meter @ 68⁰F)	133
Thermal Conductivity (Btu/sq.ft./ft./hr./⁰F @ 68⁰F)	34
Magnetic Permeability	1.3
Specifications
ASTM	B148 C95400** B505 C95400
ASME	SB148 C95400**
Federal	QQ-C 390 C954 Type III as cast
Military	B-16033 Amend 2, Class 3
SAE	J462 C95400B
CDA	C95400
*Waive method of manufacture

Mechanical Properties

MoldStar^® 18	Tensile Strength ksi Min.	Yield Strength ksi Min.	Elongation % in 2" Min.
MoldStar^® 18	85	32	12

Typical Applications include:

Wear Plates

Gibs and Ways

Gear Racks

Wear Strips

Support Rails

Lifter Blades

Guides

Liners

Keys

Leader Pin Bushings

Ejector Sleeves

Hold-Down Bars

Straightening Dies

Lead Nuts for Unscrewing Molds

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Disclaimer

While the information contained is deemed reliable, no warranties are expressed or implied. For specific information regarding an application please call 1-800-272-3031 or e-mail us at sales@moldstar.com