C37700 Forging Brass

C37700 Forging Brass

60–63%
Copper Content
Excellent
Machinability
H02/H04/H06
Temper
C37700 brass, commonly known as Forging Brass, is a leaded copper-zinc alloy designed for excellent hot forging performance and reliable machinability. It is widely used in valves, plumbing fittings, hydraulic components, and industrial forged parts.
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Lead Time: 3-5 Business Days

Product Overview

C37700 brass is a high-performance forging alloy specifically developed for hot forging and precision machining applications. With balanced copper-zinc composition and controlled lead content, it provides excellent forgeability, good corrosion resistance, and stable dimensional performance after machining.

Produced through extrusion and hot forging processes, C37700 brass offers reliable mechanical strength and smooth material flow during forging operations. Its excellent processing characteristics help manufacturers achieve high production efficiency and consistent product quality in complex forged components.

C37700 brass is extensively used in plumbing fittings, valves, pipe connectors, hydraulic systems, and industrial hardware where strength, durability, and forging performance are essential. It is widely applied across plumbing, HVAC, water systems, automotive, and general engineering industries.

Key Features

Excellent hot forging performance
Good machinability and dimensional stability
Reliable corrosion resistance
Good pressure resistance and durability
Suitable for complex forged components
Widely used in plumbing and valve systems

Available Sizes

Copper Shape Thickness (mm) Width/Diameter (mm) Length (m)
Bar - Φ5-200 1-6
Wire - Φ0.05-10 Customize
Sheet 0.25-6 500-2500 1-6
Plate 6-200 200-3000 1-6
Strip 0.15-6 8-610 Customize
Tube OD: φ2-600; WT:φ0.2-100mm - 1-6
Coil 0.15-6 3-1250 1-6
Foil < 0.15 10-1350 Customize
Profile Customized Customize Customize

* Custom sizes available upon request. Contact our sales team for special requirements.

Technical Specifications

Precision data for engineering decisions. All values tested per ASTM standards.

01 Material Properties

Specification Value Notes
Cu Content 57–61% Free-cutting brass composition
Pb Content 1.0–2.5% Improves machinability
Zn Content Remainder Balanced mechanical properties
Density 8.44 g/cm³ Typical value
Electrical Conductivity ~23% IACS Based on temper
Tensile Strength 350–500 MPa Depends on temper
Elongation ≥ 18% Typical annealed/extruded condition
Forging Performance Excellent Optimized for hot forging
Fabrication Hot Forging / Machining / Threading Suitable for forged fittings
ASTM Standard ASTM B36 / ASTM B134 EN & JIS available

Applications & Use Cases

Proven solutions across diverse industries. From aerospace to marine environments.

Frequently Asked Questions About C37700 Forging Brass

Practical engineering answers on C37700 forging brass: why it is the forging standard, properties, lead/RoHS limits, standards and sourcing.

C37700 is a leaded brass with 58.0-61.0% Cu, Zn balance and 1.5-2.5% Pb, formulated specifically for hot closed-die forging. Its alpha+beta structure flows easily at forging temperatures (about 650-750 deg C), giving it a hot-forgeability rating of 100 - the reference benchmark for copper alloys. After forging it machines cleanly at about 80% of the C36000 free-cutting baseline.
As-forged C37700 typically shows tensile strength around 360-440 MPa, yield strength about 130-200 MPa and elongation 15-30%. Forged blanks are finish-machined into valve bodies, fittings and couplings rather than cut from solid bar, which saves material on heavy sections.
No. C37700 contains 1.5-2.5% Pb, which exceeds the 0.25% weighted limit in NSF/ANSI 372 for potable-water wetted parts. It is covered by RoHS Exemption 6(c), valid through 30 June 2027, for certain applications, but it should not be specified for drinking-water contact. For lead-free forgings, switch to a low-lead or silicon brass such as C87860 (Eco Brass).
C37700 is standardized under ASTM B124 (rod, bar, shapes) and B283 (forgings), with SAE J461/J463 references. The European forging equivalent is CW617N (CuZn40Pb2); the German/DIN grade is CuZn40Pb2. Confirm the exact designation your drawing requires before ordering.
Yes. Linsy Copper supplies C37700 rod, bar and forging billets to ASTM B124/B283 with full MTR/MTC on every heat and SGS reports on request. Custom diameters, hex or square sections and small MOQs are supported, with typical lead times of 10-60 days and quotes returned within 24 hours. Note the lead content when specifying end use.
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