Materials

SAE660 932 Leaded Bronze

Overview

SAE 660 / C93200 Leaded Bronze is a general purpose leaded tin bronze bearing and bushing material. It has excellent machining properties, good hardness, strength and wear resistance with excellent anti-frictional qualities. The alloy is not subject to dezincification and has reasonable corrosion resistance to sea water and brine making it suitable for pump and valve components. 932 is suitable for bearings having medium loads and speeds with adequate lubrications. SAE 660 has very similar components to LG2 bronze albeit with slightly different proportions. This means that both metals can be used interchangeably in most cases. The composition of 932 is strictly controlled as are the casting conditions. All Kormax bronze is manufactured using finely controlled continuous or centrifugal casting techniques to ensure that hardness and strength is superior to sand-casting methods. This also means that the material has a fine grain structure and is free from porosity.

Common Applications

Air Actuators
Architecture
Couplings
Electrical Hardware
Plumbing Fixtures and Pipe fittings
Heating Equipment
Impellers
Marine Parts
Medium load Bearings
Printing Presses
Pump Parts
Small Gears
Transducer Housings
Valve Bodies and Valves

Key Features

Excellent machining properties
Medium Strength
Good Bearing Properties
Good Pressure Tightness
Not subject to Dezincification
Reasonable corrosion resistance to seawater

Material Profile

Profile
Size Range
Metric Size Range (mm)
Imperial Size Range (in)
NZ (Availability)
AUS (Availability)
Manufacturing Method
Flat Bar
See Size Range
6.35 to 38.1 (T)
¼ to 1 1⁄2 (T)
Stocked
Indent
Continuous Cast
Flat Bar
See Size Range
101.6 to 457.2 (W)
4 to 18 (W)
Stocked
Indent
Continuous Cast
Hollow Round Bar
See Size Range
215.90 to 406.40 (OD)
8 1⁄2 to 16 (OD)
Indent
Stocked
Continuous Cast & Centrifugal
T x W (mm)
T x W (inch)
Kg/MTR
6.35 X 101.6
¼ X 4
9.50
6.35 X 203.2
¼ X 8
18.50
6.35 X 304.8
¼ X 12
27.50
9.53 X 101.6
3⁄8 X 4
12.50
9.53 X 203.2
3⁄8 X 8
24.50
9.53 X 304.8
3⁄8 X 12
36.50
12.7 X 203.2
1⁄2 X 8
30.80
12.7 X 254
1⁄2 X 10
38.50
12.7 X 304.8
1⁄2 X 12
47.50
12.7 X 381
1⁄2 X 15
56.20
19.05 X 457.2
¾ X 18
93.70
25.4 X 304.8
1 X 12
80.20
38.1 X 304.8
1-1⁄2 X 12
115.80
OD x ID (mm)
OD x ID (inch)
Kg/MTR
215.9 X 165.1
8 1⁄2 X 6 1⁄2
151.80
228.6 X 101.6
9 X 4
305.86
254 X 127
10 X 5
354.21
266.7 X 215.9
10 1⁄2 X 8 1⁄2
191.61
279.4 X 177.8
11 X 7
343.38
279.4 X 203.2
11 X 8
277.49
304.8 X 152.4
12 X 6
507.92
304.8 X 203.2
12 X 8
383.50
330.2 X 203.2
13 X 8
495.52
355.6 X 254
14 X 10
460.50
406.4 X 330.2
16 X 13
427.60
406.4 X 355.6
16 X 14
308.93

Chemical Composition

Element Symbol Range (%) Nominal (%)
Tin Sn 6.3 – 7.5 7.0
Lead Pb 6.0 – 8.0 7.0
Zinc Zn 2.0 – 4.0 3.0
Nickel Ni 1.0 maximum
Iron Fe 0.20 maximum
Aluminium Al 0.005 maximum
Antimony Sb 0.35 maximum
Phosphorus P 0.15 maximum
Copper Cu Balance

Mechanical Properties

Metric Values Imperial Values
Tensile Strength Min 240 N/mm² 35000 psi
Yield Strength Min 135 N/mm² 20000
Elongation Min 20% 20%
Hardness Min 60 BHN 60 BHN

Comparative Specifications

AS1565 C93200

ASTM B505

B271 – C93200

SAE 660

Machining Allowances

All Kormax SAE660 / C93200 bronze bar has machining allowances added to the sizes quoted. To use 14″ x 10″ hollow bar as an example, this material would measure approximately 14.118″ to 14.166″ OD x 9.786″ to 9.898″ ID as supplied (see table below). Therefore, this allows finished components measuring 14″ OD x 10″ ID to be easily manufactured from 14″ x 10″ hollow bar.

Hollow Bars

Size Range OD Allowance ID Allowance
up to 9″ +0.078″ to +0.110″ -0.062” to -0.158″
9-1⁄2″ to 12″ +0.094″ to +0.134″ -0.078” to -0.182″
Above 12″ +0.118″ to +0.166″ -0.102” to -0.214″

Flat Bars

Bar Width Thickness Allowance Width Allowance
4″ +0.078″ to +0.110″ +0.078″ to +0.110″
Above 4″ +0.109″ to +0.141″ +0.109″ to +0.141″

Resources

Data Sheet

Leaded Bronze SAE660932 Data Sheet

PDF (93 KB)

/wp-content/uploads/2022/11/Leaded-Bronze-SAE660932-Data-Sheet.pdf

Blog

What is Bronze and Bronze Alloy-Naming Systems and Standards?

Resource

Bronze Manufacturing Processes

PDF (702 KB)

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Related Products

LG2 Leaded Gunmetal Bronze

LG2 Bronze is one of the most used grades of bronze in industry. It has medium strength, excellent machining properties, and is suitable for bearings, gears and other components used in relatively light duty applications. Although LG2 is often referred to as phosphor bronze, it is in fact a leaded gunmetal. Only the “PB” group of bronzes (PB1, PB2 etc) can truly be called phosphor bronze. All Kormax LG2 bronze is manufactured using finely controlled continuous or centrifugal casting techniques to ensure that hardness and strength is superior to sand-casting methods. This also means that the material has a fine grain structure and is free from porosity.