Manufacturer of custom machined parts, specializing in bronze and other alloys for your engineered applications
419.223.1075
1046 Greenlawn Ave, Lima OH 45804
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COPPER-BASED ALLOYS
C67600
CAST C67600
C67600 manganese bronze is a versatile extruded and drawn alloy known for its high strength and good corrosion resistance. In addition, C676 has a fairly low melting temperature and a moderately low heat capacity.
INFORMATION
PRODUCT DESCRIPTION: Manganese Bronze
TEMPERS: H02 Half Hard, H04 Hard
SOLIDS: 3/4" to 3" O.D.
HEX: Consult Mill
RECTANGLES: Consult Mill
STANDARD LENGTHS: 144”
TYPICAL USES
INDUSTRIAL: gate valve stems, valve balls, welding rod
SIMILAR OR EQUIVALENT SPECIFICATION
CDA
ASTM
SAE
AMS
Federal
Military
Other
C67600
B138 B138M
QQ-B-728
CHEMICAL COMPOSITION
Cu%1
Pb%
Sn%
Zn%
Fe%
Mn%
57.00-60.00
0.50-1.00
0.50-1.50
Rem.
0.40-1.30
0.05-0.50
MACHINABILITY
Copper Alloy UNS No.
Machinability Rating
Density(lb / in 3 at 68 °F)
C67600
60
0.302
MECHANICAL PROPERTIES
Mechanical Properties according to ASTM B138/B138M-11(2017)

H02 Half Hard
SIZE RANGE: UP TO 1" INCLUSIVE
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 4x Diameter or Thickness of Specimen, min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
72
496
36
248
13
90

SIZE RANGE: OVER 1" TO 2 1/2" INCLUSIVE
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 4x Diameter or Thickness of Specimen, min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
70
483
35
241
15
90

SIZE RANGE: OVER 2 1/2"
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 4x Diameter or Thickness of Specimen, min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
65
448
32
221
17
90


H04 Hard
SIZE RANGE: UP TO 1" INCLUSIVE
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 4x Diameter or Thickness of Specimen, min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
80
552
56
386
8

SIZE RANGE: OVER 1" TO 2 1/2" INCLUSIVE
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 4x Diameter or Thickness of Specimen, min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
76
524
52
359
10

SIZE RANGE: OVER 2 1/2"
Tensile Strength, min
Yield Strength, at 0.5% Extension Under Load, min
Elongation, in 4x Diameter or Thickness of Specimen, min
Rockwell "B" Hardness
Remarks
ksi
MPa
ksi
MPa
%
typical HRB
68
469
45
310
16

PHYSICAL PROPERTIES
US Customary
Metric
Melting Point - Liquidus
1630 °F
888 °C
Melting Point - Solidus
1590 °F
866 °C
Density
0.302 lb/in3 at 68 °F
8.36 gm/cm3 at 20 °C
Specific Gravity
8.36
8.36
Electrical Conductivity
24% IACS at 68 °F
0.14 MegaSiemens/cm at 20 °C
Thermal Conductivity
61 Btu/sq ft/ft hr/°F at 68 °F
105.65 W/m at 20 °C
Coefficient of Thermal Expansion 68-572

11.8 · 10-6 per °F (68-572 °F)

20.4 · 10-6 per °C (20-300 °C)

Modulus of Elastic in Tension
15000 ksi
103422 MPa
Modulus of Rigidity
5600 ksi
38611 MPa
FABRICATION PROPERTIES
Technique
Suitability
Soldering
Excellent
Brazing
Excellent
Oxyacetylene Welding
Good
Gas Shielded Arc Welding
Fair
Spot Weld
Good
Capacity for Being Cold Worked
Poor
Capacity for Being Hot Formed
Excellent
Forgeability Rating
80
Machinability Rating
30


SPEC SHEET


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