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C63000
ISO N (non-ferrous)Nickel aluminum bronze (wrought; CDA classifies it as Copper-Aluminum Alloys (Aluminum Bronzes)). Number: UNS C63000. Standard: Composition is UNS C63000 (CDA composition table). Product standards include ASTM B150/B150M (rod, bar and shapes), ASTM B124/B124M (forging stock), ASTM B283/B283M (die forgings) and AMS 4640 (rod, bar, tube, shapes and forgings).
🌐JIS and 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 |
|---|---|---|---|---|
| UNS | C63000 | UNS C63000 | — | |
| JIS | C6301Aluminum Bronze Type 5 | JIS H 3100 (plate) | close | One source / reference[7][8] |
| EN | CuAl10Ni5Fe4 | CW307G | close | Agrees in 2+ sources[9][10][8] |
| GB | QAl10-4-4 | close | One source / reference[8] |
Differences between the equivalents (from the sources)
- JIS C6301: In the Japan Copper and Brass Association composition table, C6301 is Cu 77.0–84.0, Al 8.5–10.5, Fe 3.5–6.0, Ni 4.0–6.0, Mn 0.50–2.0, with Cu+Al+Fe+Ni+Mn 99.5 min, and is listed in plate form only. Compared with C63000 (Al 9.0–11.0, Fe 2.0–4.0, Ni 4.0–5.5, Mn ≤1.5), Fe is higher and Al slightly lower. In the same table, the aluminum bronzes for rod (JIS H 3250) are C6161, C6191 and C6241, all with a low Ni of 0.50–2.0, so they are different from C63000. Ningbo Jintian (a manufacturer) lists ASTM C63000 and JIS C6301 side by side as equivalents of CW307G
- EN CuAl10Ni5Fe4: Wieland labels its U33 as CuAl10Ni5Fe4 / CW307G / UNS C63000, and in its aerospace list it also pairs C63000 as CuAl10Ni5Fe4 with AMS 4640 and ASTM B150. On the other hand, Wieland matches its U35 (CuAl10Ni5Fe4 / CW307G) to UNS C63020, so CW307G is assigned to both C63000 and C63020. Ningbo Jintian also lists C63000 as an equivalent of CW307G. The EN composition range could not be confirmed in primary sources
- GB QAl10-4-4: Ningbo Jintian lists GB QAl10-4-4 as an equivalent of CW307G. The GB composition range could not be confirmed in primary sources
📄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 B150/B150M | Standard Specification for Aluminum Bronze Rod, Bar, and ShapesAluminum bronze rod, bar and shapes. Ten alloys including C63000. Tempers HR50, M10, M20, M30, O20, O25, O30, O32, TQ30, TQ50 and TQ55 (current edition B150/B150M-26) | Agrees in 2+ sources[3][1] |
| ASTM B124/B124M | Standard Specification for Copper and Copper Alloy Forging Rod, Bar, and ShapesRod, bar and shapes for hot forging. Includes C63000. Tempers H50 (extruded then drawn), M20 (as hot rolled) and M30 (as hot extruded) (edition checked: B124/B124M-20) | Agrees in 2+ sources[12][1] |
| ASTM B283/B283M | Standard Specification for Copper and Copper-Alloy Die Forgings (Hot-Pressed)Hot die forgings. Includes C63000 and C63200 as aluminum-nickel bronze (edition checked: B283/B283M-24) | Agrees in 2+ sources[13][1] |
| AMS 4640 | Aluminum Bronze, Bars, Rods, Shapes, Tubes, and Forgings, 81.5Cu - 10.0Al - 4.8Ni - 3.0Fe, Drawn and Stress Relieved (HR50) or Temper Annealed (TQ50)Aerospace aluminum bronze rod, bar, shapes, tube and forgings. Tempers HR50 (stress relieved after drawing) or TQ50 (quenched and tempered). Latest edition is AMS 4640J (2023-11-10) | Agrees in 2+ sources[14][1][2] |
| ASTM B171/B171M | Plate for pressure vessels, condensers and heat exchangers | One source / reference[1] |
| MIL-B-16166 | Heat-treated aluminum bronze forgings | One source / reference[1] |
All ASTM standards on Kezuriba: ASTM standards quick reference.
✈Main aerospace uses (as stated in the sources)
- Aircraft parts (CDA cites corrosion resistance, wear resistance, impact resistance and high strength as the reasons; Concast also lists Aircraft parts first among its applications)[1][2]
- Aircraft bearings and bushings (applications of Ampco Metal's AMS 4640-conforming product)[5][6]
- Landing gear bushings[15]
- Wieland lists C63000 (tempers HR50 and TQ50; AMS 4640, ASTM B150, QQ-C-465 and other airframe manufacturers' specifications) in its list of aerospace alloys (no part names given)[10]
⚗Chemical composition (mass %)
As specified in UNS C63000 (CDA) / AMS 4640 (Concast)
| Element | Range | Confidence |
|---|---|---|
| Cu | Balance (includes Ag) | Agrees in 2+ sources[1][2] |
| Al | 9 – 11 | Agrees in 2+ sources[1][2] |
| Ni | CDA notes that the value includes Co | Agrees in 2+ sources[1][2] |
| Fe | 2 – 4 | Agrees in 2+ sources[1][2] |
| Mn | ≤ 1.5 | Agrees in 2+ sources[1][2] |
| Si | ≤ 0.25 | Agrees in 2+ sources[1][2] |
| Sn | ≤ 0.2 | Agrees in 2+ sources[1][2] |
| Zn | ≤ 0.3 | Agrees in 2+ sources[1][2] |
| Cu plus named elements, total | ≥ 99.5 | One source / reference[1] |
⚖Density
7.58 g/cm³
CDA: 0.274 lb/in³, specific gravity 7.58. Concast: 0.274 lb/in³, 7.58 g/cm³. Ampco Metal gives 7.53 g/cm³ as the value for its own product
Calculate weight in C63000 →💪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 |
|---|---|---|---|---|---|
| AMS 4640 HR50 (stress relieved after drawing) or TQ50 (quenched and tempered), up to 1 in (25.4 mm) in diameter or thickness | ≥ 760 (110 ksi) | ≥ 470 (68 ksi) | ≥ 10 | HB 201–248 | Specified value (AMS 4640; Concast table) One source / reference[2] |
| AMS 4640 HR50 or TQ50, 1–2 in | ≥ 760 (110 ksi) | ≥ 415 (60 ksi) | ≥ 10 | HB 201–248 | Specified value (AMS 4640; Concast table) One source / reference[2] |
| AMS 4640 HR50 or TQ50, 2–3 in | ≥ 725 (105 ksi) | ≥ 380 (55 ksi) | ≥ 10 | HB 187–241 | Specified value (AMS 4640; Concast table) One source / reference[2] |
| AMS 4640 HR50 or TQ50, 3–5 in | ≥ 690 (100 ksi) | ≥ 345 (50 ksi) | ≥ 10 | HB 187–241 | Specified value (AMS 4640; Concast table) One source / reference[2] |
| ASTM B150 tempers (those among HR50, M10, M20, M30, O20, O25, O30, O32, TQ30, TQ50 and TQ55 that apply to C63000) | — | — | — | — | Specified value (ASTM B150) Not confirmed[3] |
| Round bar HR50 (stress relieved after drawing; 10% cold worked), 1 in (25.4 mm) diameter | 814 (118 ksi) | 517 (75 ksi, 0.5% extension under load) | 15 | HRB 98 (CDA) / HB 228 (Ampco) | Typical value (CDA Typ value and Ampco Metal nominal value) Agrees in 2+ sources[1][5][6] |
| Round bar HR50 (10% cold worked), 2 in (50.8 mm) diameter | 793 (115 ksi) | 448 (65 ksi, 0.5% extension under load) | 18 | HRB 96 (CDA) / HB 217 (Ampco) | Typical value (CDA Typ value and Ampco Metal nominal value) Agrees in 2+ sources[1][5][6] |
| Round bar HR50 (10% cold worked), 3 in (76.2 mm) diameter | 772 (112 ksi) | 427 (62 ksi, CDA) / 420 (Ampco) | 20 | HRB 96 (CDA) / HB 212 (Ampco) | Typical value (CDA Typ value and Ampco Metal nominal value) One source / reference[1][5] |
| Round bar M30 (as hot extruded), 4 in diameter | 689 (100 ksi) | 414 (60 ksi, 0.5% extension under load) | 15 | HRB 96 | Typical value (CDA Typ value) One source / reference[1] |
| Square and flat bar (Bar) HR50 (10% cold worked), 1 in | 758 (110 ksi) | 427 (62 ksi, 0.5% extension under load) | 15 | HRB 97 | Typical value (CDA Typ value) One source / reference[1] |
| Square and flat bar (Bar) HR50 (10% cold worked), 2 in | 689 (100 ksi) | 414 (60 ksi, 0.5% extension under load) | 15 | HRB 96 | Typical value (CDA Typ value) One source / reference[1] |
| Square and flat bar (Bar) M30 (as hot extruded), 3 in | 621 (90 ksi) | 345 (50 ksi, 0.5% extension under load) | 15 | HRB 96 | Typical value (CDA Typ value) One source / reference[1] |
1 MPa ≈ 145 psi (0.145 ksi). Hardness conversion · unit converter
🔧Machinability notes (as stated in the sources)
- Machinability rating is 30 (CDA rating based on C36000 free-cutting brass = 100; Concast and National Bronze also give 30)[1][2][11]
- Cold workability is Poor, hot formability is Good, forgeability rating is 75, hot working temperature is 1450–1700°F and annealing is 1100–1300°F (CDA)[1]
- Ampco Metal's recommended cutting conditions (carbide K10–K20): rough milling vc 110–160 m/min, f 0.1–0.4 mm/rev, ap up to 4 mm; finish milling vc 90–115, f 0.05–0.1, ap 0.1–0.5; rough turning vc 150–200, f 0.1–0.2, ap up to 2 mm; finish turning vc 180–250, f 0.05–0.1, ap 0.1–0.2 (values for its own AMS 4640-conforming product)[5][6]
- National Bronze's machining cautions (naming C63000 AMS 4640): coated carbide inserts are recommended for roughing. Curled chips tend to wrap around the tool and damage the surface, so deal with them by using a chip breaker, raising the coolant pressure or retracting the tool often. Heat expansion during machining can easily push parts out of tolerance, so use cutting fluid for precision work[11]
📚Sources
Primary sources (public documents from makers, industry associations and standards bodies), numbered where each value is cited. Many are in Japanese.
- alloys.copper.org https://alloys.copper.org/alloy/C63000
- concast.com https://www.concast.com/c63000.php
- store.astm.org https://store.astm.org/b0150_b0150m-26.html
- sandvik.coromant.com https://www.sandvik.coromant.com/en-us/knowledge/materials/workpiece-materials
- ampcometal.com https://www.ampcometal.com/documents/products/ampco-45/TDS-AMPCO-45-Technology-EN.pdf
- ampcometal.com https://www.ampcometal.com/documents/products/ams-4640/TDS-AMS-4640-Technology-EN.pdf
- copper-brass.gr.jp https://www.copper-brass.gr.jp/db_access/seibun.htm
- en.jtcopper.com https://en.jtcopper.com/cw307g-rod--nickel-aluminium-bronze-for-critical-components.html
- wieland.com https://www.wieland.com/en/products/bronze-alloys
- wieland.com https://www.wieland.com/en/solutions/aerospace/high-performance-alloys/extruded-and-cast-a…
- nationalbronze.com https://www.nationalbronze.com/News/machining-guidelines-for-nickel-aluminum-bronze/
- store.astm.org https://store.astm.org/b0124_b0124m-20.html
- store.astm.org https://store.astm.org/b0283_b0283m-24.html
- sae.org https://www.sae.org/standards/content/ams4640j/
- nationalbronze.com https://nationalbronze.com/AMS-4640-C63000-Nickel-Aluminum-Bronze.php
Other materials
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