Manganese Brass Flat Products (UNS C66700) - Mechanical Properties

Dec 17 2012

Manganese brass UNS C66700 has a copper content of not less than 68.5%.

The following table shows the mechanical properties of UNS C66700 flat products as a function of heat treatment and thickness.

Temper Thickness Tensile Str. Yield Str. Elong. Rockwell Shear Str.
B C F 30T
H01 1mm. (0.04 in.) 386MPa (56ksi) 250MPa (36ksi) 38% 57 - - 55 -
H02 1mm. (0.04 in.) 441MPa (64ksi) 331MPa (48ksi) 20% 70 - - 64 -
H03 1mm. (0.04 in.) 490MPa (71ksi) - 13% 78 - - 69 -
H04 1mm. (0.04 in.) 534MPa (78ksi) 427MPa (62ksi) 10% 84 - - 72 -
H06 1mm. (0.04 in.) 607MPa (88ksi) - 4% 89 - - 75 -
H08 1mm. (0.04 in.) 662MPa (96ksi) - 2% 91 - - 91 531MPa (77ksi)
H10 1mm. (0.04 in.) 689MPa (100ksi) - 2% 93 - - 78 -
OS015 1mm. (0.04 in.) 379MPa (55ksi) 165MPa (24ksi) 44% - - 83 47 -
OS025 1mm. (0.04 in.) 365MPa (53ksi) 138MPa (20ksi) 53% - - 77 41 -
OS035 1mm. (0.04 in.) 345MPa (50ksi) 124MPa (18ksi) 55% - - 74 35 -
OS050 1mm. (0.04 in.) 338MPa (49ksi) - 58% - - 70 30 -
OS070 1mm. (0.04 in.) 324MPa (47ksi) 110MPa (16ksi) 60% - - 64 22 -
OS100 1mm. (0.04 in.) 316MPa (46ksi) 83MPa 124ksi) - - - 60 18 -

The chemical composition of UNS C66700 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 68.5-71.5
Iron, Fe 0.1
Manganese, Mn 0.8-1.5
Lead, Pb 0.07
Zinc, Zn Remainder

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