Copper Alloy High Lead Tin Bronze C93200

Product Data Sheet – Copper Alloys

Bronze Alloy – High Lead Tin Bronze UNS-C93200 – Leaded Phosphor Bronze

Brass and bronze are alloys of predominantly copper with additions of zinc, tin, nickel, lead, etc. Unlike brass alloys, bronzes have a tin content addition.

Also known as a high leaded good corrosion resistance bronze alloy, C93200 is most commonly know as a bearing bronze and has excellent machining properties, high hardness, strength and wear resistance for a bronze alloy. Plus, it exhibits excellent anti-friction qualities. Due to its high copper content, this bronze alloys is not subject to dezincification corrosion and be classified as a DZR bronze alloy. This copper leaded tin bronzes have good resistance to corrosion in seawater and brine conditions.

This bearing bronze is ideal for pump and valve components. C93200 bronze is suitable for bearings, bushings having medium loads and speeds with adequate lubrication.

The absence of silicon and aluminium makes this copper and tin bronze alloy not a silicon bronze nor an aluminium bronze.

bronze alloy for bearings

Chemical Composition

% Maximum unless shown as range or minimum

Copper (1) Aluminium Antimony Iron Lead Nickel (2) Phosphorus (3) Silicon Sulphur Tin Zinc
Min/Max
81.0-85.0
0.005
0.35
0.20
6.0-8.0
1.0
0.15
0.005
0.08
6.3-7.5
1.0-4.0
Nominal
83.0
7.0
6.9
2.5

(1) In determining Copper minimum, Copper may be calculated as Copper + Nickel

(2) Nickel value includes Cobalt

(3) For continuous castings, phosphorus shall be 1.5% maximum

Note: Copper + sum of named elements, 99.0% minimum

Applicable Specifications

Product
Specification
ASTM SAE
Centrifugal
B271
J461, J462
Continuous
B505
J461, J462
Ingot
B30
Permanent Mold
J461, J462
Sand
B584, B66, B763
J461, J462

Fabrication Properties

Joining Technique
Suitability
Soldering
Excellent
Brazing
Good
Oxyacetylene Welding
Not Recommended
Gas Shielded Arc Welding
Not Recommended
Coated Metal Arc Welding
Not Recommended
Machinability Rating
70

Mechanical Properties

Measured at Room Temperature 68°F (20°C)

Temper
Cold Work
Typical/Min
Temperature
Tensile Strength
Yield Strength
(0.5% ext under load)
Elongation
Brinell Hardness
Fatigue Strength
at 108 cycles
Izod Impact Strength
%
°C
MPa
MPa
%
MPa
J
As Centrifugal Cast
M02
0
Minimum
20
207
97
15
As Continuous Cast
M07
0
Minimum
20
241
138
10
As Sand Cast
M01 0 Minimum 20 207 97 15
M01 0 Typical 20 241 124 20 65 110 8.0

Physical Properties

Property Imperial Units
Metric Units
Density
0.322 lb/in3 @ 68°F
8.91 g/cm³ @ 20°C
Specific Gravity
8.91
8.91
Melting Point (Liquidus)
1790°F
977°C
Melting Point (Solidus)
1570°F
854°C
Electrical Resistivity
85.9 ohms-cmil/ft @ 68°F
14.29 micro-ohm-cm @ 20°C
Electrical Conductivity
12 %IACS @ 68°F
0.07 MegaSiemens/cm @ 20°C
Specific Heat
0.09 Btu/lb/°F @ 68°F
377.0 J/kg . °K @ 293°K
Mean Coefficient of Expansion
10.0 x 10-6 per °F (68-212°F)
18.0 x 10-6 / °C @ 20°C (20-100°C)
Thermal Conductivity
33.6 BTU . ft/(hr.ft2.°F) @ 68°F
58.2 W / m . °K @ 20°C
Modulus of Elasticity (Tension)
14,500 ksi
100,000 MPa

Typical Uses for Bronze Alloy C93200

Automotive: Automotive Fittings

Fasteners: Washers

Industrial: Pump Impellers, Diesel Engine Wrist Pin Bushings, Forging Press Toggle Lever Bearings, Hydraulic Press Stuffing Box, Hydraulic Press Main Lining, Main Spindle Bearings, Machine Tool Bearings, Bearings for Cranes, Trunion Bearings, Roll Neck Bearings, Rolling Mill Bearings, Linkage Bushings for Presses, Fuel Pump Bushings, Water Pump Bushings, Pump Fixtures, Fittings, Insert Bearings, Bearings, Thrust Washers, Pumps, Bushings, Machine Parts, General Purpose Bushings.

Bronze alloy - centrifugal casting machine

The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high performance metals for challenging service conditions. Our engineers and metallurgists will be pleased to provide further data and applications advice.

 

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