C37700 CuZn39Pb2 Free Cutting Brass Bar

C37700 CuZn39Pb2 Free Cutting Brass Bar

C37700 CuZn39Pb2 Free Cutting Brass Bar is a high performance brass alloy specifically designed for excellent machinability and precision manufacturing . Containing copper, zinc,and lead, this alloy offers outstanding cutting characteristics, good corrosion resistance, and reliable mechanical properties

C37700 is widely used in the production of precision-machined components, fitting, valves, fasteners, and industrial hardware where high-speed machining and dimensional accuracy are essential

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C37700 CuZn39Pb2 Free Cutting Brass Bar

Common Standards & Designations
Standard Title / Scope Applicable Alloys / Grades
ASTM B927/B927M Standard Specification for Brass Rod, Bar, and Shapes C21000, C22000, C23000, C24000, C26000, C26800, C27000, C27400, C27450, C27451, C27453, C27550, C28500
ASTM B453 Standard Specification for Copper-Zinc-Lead Alloy (Leaded-Brass) Rod, Bar, and Shapes C34500, C35000, C35300, C35600, C36000, C36500, C37000, C37700, C38000
ASTM B981/B981M Standard Specification for Low-Leaded Brass Rod, Bar, Wire, and Shapes C36300, C36500, C37000, C37100, C37700
EN 12164 Copper and copper alloys – Rod for free machining purposes CW603N, CW612N, CW614N, CW617N (C36000 equivalents)
EN 12163 Copper and copper alloys – Rod for general purposes CW502L, CW505L, CW508L, CW509L
JIS H3250 Copper and copper alloy rods and bars C2600, C2800, C3600, C3771
BS 2874 Specification for Copper and copper alloy rods and
sections (withdrawn, replaced by EN 12164)		 CZ121, CZ131, CZ132
SAE J463 Wrought Copper and Copper Alloys C36000, C37700, C38000, C46400

Standard Shapes
Profile Type Typical Dimensions Applications
Round Rod Diameter: 3 – 220 mm (0.125 – 8.66 in) Shafts, pins, connectors, fasteners, musical instruments
Hexagonal Rod Across Flats (AF): 4 – 100 mm Screw machine stock, nuts, fittings
Square Rod Width: 5 – 100 mm Keys, brackets, architectural trim, decorative hardware
Rectangular Bar Thickness: 3 – 100 mm; Width: 5 – 200 mm Structural supports, bus bars, flat components

Standard Lengths
Length Type Range Tolerances
Random Length 2000 – 4000 mm Standard mill lengths
Fixed Length 2500, 3000, 4000, 5000 mm ±5 – 10 mm
Custom Cut Length 10 – 2000 mm ±0.5 mm
Surface Finishes
Finish Type Manufacturing Method Characteristics Applications
Cold Drawn Cold drawing through dies Smooth, bright, precise dimensions, tight tolerances Precision machining, screw machine parts
Extruded Hot extrusion As-extruded surface, scale present, economical General engineering, forging blanks
Turned Lathe machining Concentric, smooth, tight OD control Precision shafts, high-value components
Ground Centerless grinding Very tight tolerances, superior surface finish Precision bearing surfaces, dowel pins
Polished Mechanical polishing Mirror-like finish, decorative Architectural trim, nameplates
Pickled Chemical cleaning Matte, oxide-free surface Further processing, welding

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