C28000 Brass: Equivalent Materials i - Knowledge

C28000 is a high-zinc brass alloy (UNS designation) primarily composed of copper (60-63%), zinc (37-40%), and trace elements (e.g., lead ≤0.07%). It is widely used in plumbing, fasteners, and industrial components due to its excellent machinability, corrosion resistance, and formability. Below is a detailed breakdown of its equivalent grades across key global standards, with English technical specifications:

Standard System	Country/Region	Equivalent Grade	Key Specifications & Notes
ASTM/UNS	United States	C28000 (UNS)	- Defined in ASTM B16/B16M (valves/fittings) and ASTM B363 (forgings). - Chemical composition: Cu 60.5-63.5%, Zn balance, Pb ≤0.07%, Fe ≤0.10%, Sn ≤0.10%. - Mechanical properties: Tensile strength ≥415 MPa, Yield strength ≥170 MPa, Elongation ≥30%.
EN (European Norm)	European Union	CuZn40 (EN 12164)	- Harmonized European standard: EN 12164 (Cu-Zn alloys for cold working). - Chemical composition: Cu 59.0-62.0%, Zn balance, Pb ≤0.05%, Fe ≤0.10%. - Equivalent to former national grades: Germany (DIN) CuZn40, France (AFNOR) CuZn40, UK (BS) CZ108.
JIS (Japanese Industrial Standard)	Japan	C2800 (JIS H3100)	- Defined in JIS H3100 (Copper and copper alloy plate, sheet, strip and foil). - Chemical composition: Cu 60.0-63.0%, Zn balance, Pb ≤0.07%, Fe ≤0.10%. - Used interchangeably with C28000 in Asian markets (e.g., South Korea, Taiwan).
GB (Chinese National Standard)	China	H62 (GB/T 5231)	- Domestic equivalent: H62 (GB/T 5231-2012). - Chemical composition: Cu 60.5-63.5%, Zn balance, Pb ≤0.08%, Fe ≤0.15%. - Note: H62 has slightly higher lead/iron tolerance but is functionally compatible with C28000 for most applications.
DIN (German Industrial Standard)	Germany	CuZn40 (DIN 17660)	- Historical grade (now superseded by EN 12164 but still in use). - Chemical composition: Cu 59.0-62.0%, Zn balance, Pb ≤0.05%, Fe ≤0.10%. - Direct equivalent to EN CuZn40 and ASTM C28000.
BS (British Standard)	United Kingdom	CZ108 (BS EN 12164)	- Adopted European standard: BS EN 12164 (replacing old BS 2874 CZ108). - Chemical composition matches EN CuZn40, fully compatible with C28000.
NF (French Standard)	France	CuZn40 (NF A51-114)	- Aligns with EN 12164 specifications. - Used in French-speaking African and Middle Eastern markets as a C28000 alternative.

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Key Notes for International Trade:

Composition Tolerances: Minor variations exist (e.g., Pb content: ASTM C28000 allows ≤0.07%, EN CuZn40 ≤0.05%), but these do not affect most industrial applications (e.g., valves, pipes, hardware). For critical uses (e.g., food contact), confirm compliance with target market regulations (e.g., FDA for the U.S., REACH for the EU).

Mechanical Property Alignment: All equivalents meet similar tensile strength (400-450 MPa) and formability requirements, ensuring interchangeability in manufacturing.