Printed from Kezuriba (kezuriba.net/en/materials/c1100/)
C1100
ISO N (non-ferrous)Copper (tough pitch copper. Former name: tough pitch copper type 1). Standard: JIS H 3100 (plate and strip) / JIS H 3250 (bar), plus standards for wire and tube (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 | C1100 | JIS H 3100 (plate and strip) / JIS H 3250 (bar), plus standards for wire and tube | — | |
| ASTM/UNS | C11000ETP copper | UNS C11000 | Equivalent (same row in the cross-reference table) | Agrees in 2+ sources[8][9][10][11] |
| EN | Cu-ETP | CW004A | Equivalent (same row in the cross-reference table) | Agrees in 2+ sources[9][10] |
| GB | T2GB/T 5231-2012 | close | One source / reference[11] |
Differences between the equivalents (from the sources)
- ASTM/UNS C11000: CDA's C11000 is Cu (including Ag) ≥99.90, with conductivity of 100%IACS or more in the annealed condition
- EN Cu-ETP: Aurubis' C11000 datasheet lists "UNS C11000, EN CW004A, JIS C110" as comparison standards (the JIS side is written as C110). Wieland Ulm's table gives K32 = Cu-ETP = CW004A = C11000 = C1100. Kemper's Cu-ETP is Cu≥99.9, O≤0.04
- GB T2: Ningbo Jintian (a Chinese copper and brass manufacturer) lists T2 on the same row as C11000 and C1100. Cu+Ag≥99.90
📄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 B152/B152M | Standard Specification for Copper Sheet, Strip, Plate, and Rolled BarCopper plate, strip, heavy plate and rolled bar. CDA and Aurubis list it as an applicable standard for C11000. B152/B152M-19, as confirmed on the ASTM page, is shown as Historical, and a newer edition exists | Agrees in 2+ sources[13][7][9] |
| ASTM B187/B187M | COPPER BUS BAR, ROD AND SHAPES AND GENERAL PURPOSE ROD, BAR AND SHAPESBusbar, bar and shapes (listed in CDA's list of applicable standards. The title follows CDA's wording) | One source / reference[7] |
All ASTM standards on Kezuriba: ASTM standards quick reference.
⚗Chemical composition (mass %)
As specified in JIS (Japan Copper and Brass Association composition table and pamphlets). Poongsan's C1100 table also gives ≥99.9
| Element | Range | Confidence |
|---|---|---|
| Cu | ≥ 99.9 | Agrees in 2+ sources[1][2][6] |
| Other elements | Elements other than Cu are "−" (no requirement) in the table. The Japan Copper Center pamphlet explains that tough pitch copper is copper in which 0.02–0.05% oxygen remains after melting (not a specified value) | One source / reference[1] |
⚖Density
8.91 g/cm³
Poongsan's C1100 specific gravity of 8.91 and CDA's C11000 specific gravity of 8.91 agree. Aurubis and Kemper give 8.9 for Cu-ETP. JIS has no density requirement
Calculate weight in C1100 →💪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 thickness range) | — | — | — | — | JIS specified value Not confirmed |
| O (strip) | ≥ 195 | — | ≥ 35 | — | Manufacturer's stated value (Poongsan. The way ranges and lower limits are written suggests JIS specified values, but the material does not say JIS. No thickness condition) One source / reference[6] |
| 1/4H (strip) | 215-285 | — | ≥ 25 | HV 55-100 | Manufacturer's stated value (same as above) One source / reference[6] |
| 1/2H (strip) | 235-315 | — | ≥ 15 | HV 75-120 | Manufacturer's stated value (same as above) One source / reference[6] |
| H (strip) | ≥ 275 | — | — | HV 80 min | Manufacturer's stated value (same as above) One source / reference[6] |
1 MPa ≈ 145 psi (0.145 ksi). Hardness conversion · unit converter
🔧Machinability notes (as stated in the sources)
- Machinability index in the Japan Copper and Brass Association and Japan Copper Center pamphlets: pure copper = 20 (leaded brass C3604 = 100)[12]
- CDA's machinability rating for C11000 is 20 (with C36000 = 100 as the basis)[7]
- Sandvik Coromant places copper and brass in ISO N and says that free-machining copper alloys with over 1% Pb machine more easily than pure copper[5]
- The Japan Copper Center pamphlet says tough pitch copper contains oxygen and is therefore unsuitable for heating to high temperature or welding in a reducing atmosphere, which causes hydrogen embrittlement (not a statement about machinability)[2]
📚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
- webdesk.jsa.or.jp https://webdesk.jsa.or.jp/preview/pre_jis_h_03250_000_000_2021_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/C11000
- 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%…
- aurubis.com https://aurubis.com/dam/jcr:ec116d17-1541-419a-a897-ad31b4fa6c93/c11000-cu-etp-us.pdf
- wieland.com https://www.wieland.com/pl/about/wieland-worldwide/wieland-ulm
- en.jtcopper.com https://en.jtcopper.com/t2-copper.html
- jcda.or.jp https://www.jcda.or.jp/publication/pamphlet/pdf/shindouhin_kaitei_20211130%20(2).pdf#page=…
- store.astm.org https://store.astm.org/b0152_b0152m-19.html
Other materials
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