C63020 Typical Mechanical Properties

MaterialConditionSizeTensile strength ksiYield Strength ksiElongation 4D %Hardness HRC (min)
AMS 4590Solution Treated and Tempered Bar<1.00″135100626
AMS 4590Solution Treated and Tempered Bar1.00″ – 2.00″13095626
AMS 4590Solution Treated and Tempered Bar2.00″ – 4.00″13090626

Physical Properties AMS 4590

Density (lb/Cu. in) – 269
Electrical Conductivity %IACS – 6% est.
Thermal Conductivity (CGS) – 0.11 est.

Typical Uses – AMS 4590

Oil & Gas – Rock Bit Bearings, Bushings, & Washers, BOP Parts, Wellhead Components
Aerospace – Landing Gear Parts, Strut Bushings
Automotive – Bearings, Off-Highway Truck Bushings, Forming Roll Bearings
Marine – Pump Parts, Bushings
Industrial – Cams, Shafting, Hydraulic Bushings for Earth Moving,Equipment, Valve Balls, Cryogenics, Drill Guide Bushings
Military – Tank Track Bearings, Bushings, Aircraft Components

Category:

C63020 (AMS 4590) is a Nickel Aluminum Bronze which is available in solid bar – AMS 4590

A special heat treatment process improves the mechanical properties beyond the range of commercial aluminum bronzes. This alloy is an extra high strength version of nickel aluminum bronze. It is used where parts require extra high strength and hardness with some ductility and toughness. Typical applications include military aircraft bushings involving heavy loads, abrasion and high deformation. The extra high strength characteristics provide extreme wear resistance for extreme loads, abrasive wear, and high impact landings (such as aircraft carrier landings).

Typical uses

Aerospace: bushings, bearings
Industrial: bearings, forming dies for roll bearings, hydraulic bushings for earth moving equipment, valve balls, valve parts (cryogenic)

Similar or equivalent specification

CDAASTMSAEAMSFederalMilitaryOther
C63020B150
B150M
4590

Chemical composition

Cu%Pb%Sn%Zn%Fe%Ni%1Al%Co%Cr%Mn%Si%

Chemical composition according to ASTM 4590

1Ni value includes Co.
Note: Cu + sum of named elements, 99.5% min. Single values represent maximums.
Rem.0.030.250.304.00-
5.50
4.20-
6.00
10.00-
11.00
0.200.051.500.15

Machinability

Copper alloy UNS No.Machinability ratingDensity (lb/in3 at 68 °F)Density (gm/in3 at 20 °C)
C630200.2757.6

Mechanical properties

Mechanical properties according AMS 4590

C63020

TQ50 quenched and tempered

Size range: up to 1″ diameter inclusive

Tensile strength, minYield strength, at 0.2% Offset, minElongation, in 2 inches (50.8 mm) or 4D, min, minRockwell “C” hardnessRemarks
ksiMPaksiMPa%min HRC
135931100689626

Size range: over 1″ to 2″ inclusive

Tensile strength, minYield strength, at 0.2% Offset, minElongation, in 2 inches (50.8 mm) or 4D, minRockwell “C” hardnessRemarks
ksiMPaksiMPa%min HRC
13089695655626

Size range: over 2″ to 4″ inclusive

Tensile strength, minYield strength, at 0.2% Offset, minElongation, in 2 inches (50.8 mm) or 4D, minRockwell “C” hardnessRemarks
ksiMPaksiMPa%min HRC
13089690621626

Physical properties

US CustomaryMetric
Melting point – liquidus1940° to 1967 °F1060° to 1075 °C
Density0.274 lb/in3 at 68 °F7.6 gm/cm3 at 20 °C
Specific gravity7.67.6
Electrical Resistivity132.33 ohms-cmil/ft at 68 °F22.0 microhm-cm at 20 °C
Thermal conductivity31.2 Btu/sq ft/ft hr/°F at 68 °F54.0 W/m at 20 °C
Coefficient of thermal expansion 68-5729.4 · 10-6 per °F (68-572 °F)17.0 · 10-6 per °C (20-300 °C)

Common fabrication processes

Forging, hot forming, machining

Common fabrication processes provided by CDA