Printed from Kezuriba (kezuriba.net/en/materials/c2801/)
C2801
ISO N (non-ferrous)Copper alloy (brass; formerly Brass Type 3, 6-4 brass). Standard: JIS H 3100 (Copper and copper alloy sheets, plates and strips) (JIS H 3100:2018).
🌐International equivalents
“Close” means composition or properties are not exactly the same. Before substituting, check the values in each standard.
| System | Designation | Number | Relation | Confidence |
|---|---|---|---|---|
| JIS | C2801 | JIS H 3100 (Copper and copper alloy sheets, plates and strips) | — | |
| ASTM/UNS | C28000Muntz Metal | UNS C28000 | close | One source / reference[7][6][8][9] |
| EN | CuZn40 | CW509L | Close (indirect correspondence via C28000) | One source / reference[10] |
| GB | H62GB/T 5231-2012 | close | One source / reference[8][9] |
Differences between the equivalents (from the sources)
- ASTM/UNS C28000: Poongsan's cross-reference table gives C2801 = C28000. CDA's C28000 is Cu 59.0–63.0, Pb ≤0.09, Fe ≤0.07, Zn balance, so the upper limits of Cu and Pb differ slightly from C2801. Ningbo Jintian matches C2801 to C27400 (H62) and C28000 to C2800 (H60), so sources disagree
- EN CuZn40: Ningbo Jintian puts CuZn40 (CW509L) in the same row as C28000 and CZ108 but gives no JIS designation. Its CuZn40 composition has a wide range, such as Cu 58.0–63.0 and Pb ≤0.3
- GB H62: Ningbo Jintian's H62 page lists JIS C2801 as a corresponding designation. However, H62 is Cu 60.5–63.5, which is on the higher side of C2801. The grade matched to C28000 is H60 (Cu 59.0–61.0)
📄Related specifications (AMS, ASTM etc.)
Specifications called up on purchase orders and drawings. AMS are SAE aerospace material specifications, split by product form (bar, plate, forging), melting practice and heat treatment. Standard texts are paid, so only titles and scopes checked on the publishers’ public pages are shown.
| Spec | Scope | Confidence |
|---|---|---|
| ASTM B36/B36M-23 | Standard Specification for Brass Plate, Sheet, Strip, And Rolled BarBrass plate, strip and rolled bar. The covered alloys include C28000 (Muntz metal) | Agrees in 2+ sources[12][6] |
All ASTM standards on Kezuriba: ASTM standards quick reference.
⚗Chemical composition (mass %)
As specified in JIS (Japan Copper and Brass Association composition table and brochure)
⚖Density
8.39 g/cm³
Poongsan's specific gravity of 8.39 for C2801 agrees with CDA's 8.39 for C28000 (C28000 has a wider range, Cu 59.0–63.0, than C2801). JIS has no density requirement
Calculate weight in C2801 →💪Mechanical properties
“Reference” values are not specified minimums from the standard but figures published by makers and others.
| Condition | Tensile MPa | Yield MPa | Elong. % | Hardness | Type of value |
|---|---|---|---|---|---|
| Plate and strip, JIS H 3100 specified values (by temper and thickness class) | — | — | — | — | JIS specified value Not confirmed |
| O (strip) | 340-420 | ≤ 240 (0.2% proof stress) | 33 | HV 85-115 | Manufacturer-stated value (Poongsan; ranges, lower limits and bare elongation numbers are mixed, so it is unclear whether these are JIS specified values) One source / reference[5] |
| 1/2H (strip) | 420-480 | ≥ 200 (0.2% proof stress) | 15 | HV 110-140 | Manufacturer's stated value (same as above) One source / reference[5] |
| H (strip) | ≥ 470 | ≥ 390 (0.2% proof stress) | 8 | HV 140 min | Manufacturer's stated value (same as above) One source / reference[5] |
| C28000 1/2 Hard H02 (sheet, thickness 0.04 in) | 483 (70ksi) | 345 (50 ksi, at 0.5% extension under load) | 10 | HRB 75 | Reference value (CDA typical value for C28000) One source / reference[6] |
| C28000 Soft Anneal O60 (sheet, thickness 0.04 in) | 372 (54ksi) | 145 (21 ksi, at 0.5% extension under load) | 45 | HRF 80 | Reference value (CDA typical value for C28000) One source / reference[6] |
1 MPa ≈ 145 psi (0.145 ksi). Hardness conversion · unit converter
🔧Machinability notes (as stated in the sources)
- Machinability index from the Japan Copper and Brass Association / Japan Copper Center brochure: brass (60:40) = 40 (leaded brass C3604 = 100, pure copper 20)[2]
- CDA's machinability rating for C28000 is 40 (basis: C36000 = 100). Cold workability is Fair and hot workability is Excellent[6]
- Japan Copper Center brochure: C2801 is easily hot worked and suited to forging, with high tensile strength and good malleability and ductility. Applications: wiring device parts, nameplates, instrument panels, switch terminals and general sheet metal work[2]
- Poongsan: C2801 is a type of Muntz metal with high hot formability and strength but low ductility. Cold workability is Fair. Dezincification and stress corrosion cracking can occur[5][11]
📚Sources
Primary sources (public documents from makers, industry associations and standards bodies), numbered where each value is cited. Many are in Japanese.
- copper-brass.gr.jp https://www.copper-brass.gr.jp/db_access/seibun.htm
- jcda.or.jp https://www.jcda.or.jp/publication/pamphlet/pdf/shindouhin_kaitei_20211130%20(2).pdf#page=…
- webdesk.jsa.or.jp https://webdesk.jsa.or.jp/preview/pre_jis_h_03100_000_000_2018_j_ed10_ch.pdf
- sandvik.coromant.com https://www.sandvik.coromant.com/en-us/knowledge/materials/workpiece-materials
- poongsan.co.kr https://poongsan.co.kr/include/images/cs/%EC%A0%9C%ED%92%88%EA%B8%B0%EC%88%A0%EC%9E%90%EB%…
- alloys.copper.org https://alloys.copper.org/alloy/C28000
- poongsan.co.kr https://poongsan.co.kr/include/images/cs/%EC%A0%9C%ED%92%88%EA%B8%B0%EC%88%A0%EC%9E%90%EB%…
- en.jtcopper.com https://en.jtcopper.com/h62-brass.html
- en.jtcopper.com https://en.jtcopper.com/h60-brass.html
- en.jtcopper.com https://en.jtcopper.com/cuzn40-copper.html
- poongsan.co.kr https://poongsan.co.kr/include/images/cs/%EC%A0%9C%ED%92%88%EA%B8%B0%EC%88%A0%EC%9E%90%EB%…
- store.astm.org https://store.astm.org/b0036_b0036m-23.html
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