BRONZE - Manganese Bronze C-675

Chemical Composition
(%max., unless shown as range or min.)

Cu(1) Al Fe Pb Mn Sn Zn
Min./Max. 57.0-60.0 .25 .8-2.0 .20 .05-.50 .50-1.5 Rem.
Nominal 58.5 - 1.4 - .10 1.0 39.0


(1) Cu value includes Ag.
Note: Cu + Sum of Named Elements, 99.5% min.

 

Applicable Specifications

Product
Specification
Bar ASTM B138
SAE J461, J463
Bar, Forging ASTM B124
Bolts ASTM F468
Forgings, Die ASTM B283
SAE J461, J463
Nuts ASTM F467
Rod ASTM B138
SAE J461, J463
Rod, Forging ASTM B124
Screws ASTM F468
Shapes ASTM B138
SAE J461, J463
Shapes, Forging ASTM B124
Studs ASTM F468

 

Fabrication Properties

Joining Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Good
Seam Weld Fair
Butt Weld Good
Capacity for Being Cold Worked Poor
Capacity for Being Hot Formed Excellent
Forgeability Rating 80
Machinability Rating 30

Common Fabrication Processes:

Hot Forging and Pressing, Hot heading and upsetting

 

Mechanical Properties (measured at room temperature, 68 F (20 C)

*Fatigue Strength: 100 x 10 6cycles, unless indicated as [N]X 106.


Temper Section
Size
Cold
Work
Typ/
Min
Temp Tensile
Strength
Yield
Strength
(0.5% ext.
under load)
Yield
Strength
(0.2%
offset)
Yield
Strength
(0.05%
offset)
El Rockwell
Hardness
Vickens
Hard.
Brinell
Hard.
Shear
Strength
Fatigue
Strength*
Izod
Impact
Strength

in. %
F ksi ksi ksi ksi % B C F 30T 500 500 3000 ksi ksi ft-lb

mm.

C MPa MPa MPa MPa







MPa MPa J
Rod
H01 1 10 TYP 68 77 45 - - 23 83 - - - - - - 47 - 0.0

25.4

20 531 310 - - 23 83 - - - - - - 324 - 0.0
H01 2 10 TYP 68 72 42 - - 27 77 - - - - - - 44 - 0.0

51

20 496 290 - - 27 77 - - - - - - 303 - 0.0
H02 1 20 TYP 68 84 60 - - 19 90 - - - - - - 48 - 0.0

25.4

20 579 414 - - 19 90 - - - - - - 331 - 0.0
O60 1 0 TYP 68 65 30 - - 33 65 - - - - - - 42 - 0.0

25.4

20 448 207 - - 33 65 - - - - - - 290 - 0.0


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 @ 20 C
Specific Gravity 8.36 8.36
Electrical Resistivity 43.2 ohms-cmil/ft @ 68 F 7.18 microhm-cm @ 20 C
Electrical Conductivity 24 %IACS @ 68 F 0.14 MegaSiemens/cm @ 20 C
Thermal Conductivity 61.0 Btu · ft/(hr · ft2 · oF) at 68F 105.6 W/m · oK at 20 C
Coefficient of Thermal Expansion 11.8 ·10-6 per oF (68-572 F) 21.2 ·10-6 per oC (20-300 C)
Specific Heat Capacity 0.09 Btu/lb/oF at 68 F 376.78 J/kg · oK at 293 K
Modulas of Elasticity in Tension 15000 ksi 103400 MPa
Modulus of Rigidity 5600 ksi 38610 MPa

Tempers Most Commonly Used
Other
ROD H01, H02, M30, O60
SHAPES M30
 
Typical Uses

Automotive

Clutch Disks, Pump Rods, Shafting
Fasteners

Bolts
Industrial

Aircraft Parts, Valve Bodies, Valve Stems, Bushings, Balls
Marine

Hardware