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 PAS 18 alloy to wear and abrasion is available in continuous tube, round rod, and rectangular bar.

These characteristics make PAS 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