Copper Alloy C86200
UNS C86200
C86200 is a high-strength manganese bronze casting alloy (Cu-Zn with aluminium, manganese and iron) used where toughness accompanies high strength.
Reference datasheet — C86200 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the M01 condition
C86200 tempers and conditions
C86200 is supplied in 4 conditions, soft to hard. M01 is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
M01Default As sand cast | Standard as-cast sand casting condition per ASTM B584 — the usual stocked/produced form for gears, valve stems and marine parts. | 340 | 690 | 20 | 180 HB | 8 % IACS |
As plaster cast | Use for medium-volume repeat parts needing better dimensional control and a finer grain than sand casting. | 345 | 700 | 18 | 185 HB | 8 % IACS |
As centrifugally cast | Pick for hollow bushings, worm-gear blanks and rings where the denser, finer centrifugal structure gives slightly higher strength and soundness. | 350 | 725 | 18 | 190 HB | 8 % IACS |
As continuous cast | Choose continuous-cast bar or tube stock when machining finished gears/bushings from solid with minimal porosity. | 350 | 705 | 18 | 185 HB | 8 % IACS |
What is C86200?
C86200 is a high-strength manganese bronze casting alloy (Cu-Zn with aluminium, manganese and iron) used where toughness accompanies high strength. It is poured in sand, permanent-mould, centrifugal and continuous moulds for gears, valve stems and structural marine parts: 690 MPa tensile, 340 MPa yield, 20% elongation, 180 HB. Machinability is roughly 30% of free-cutting brass, fusion welding is complicated by the aluminium oxide film, and dezincification limits stagnant-seawater service; C86400 or C86700 machine more easily at lower strength. C86200 has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 90% of copper alloy grades. It melts at 862°C (1,584 °F). C86200 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 71% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 105 GPa (15.2 Msi).
What is C86200 used for?
- Gears
- Valve stems
- Marine fittings
- Heavy machinery parts
Advantages
- Low embodied carbon — 3 kg CO₂/kg, better than 97% of copper alloy grades
Limitations
- Poor heat conductor — 36 W/m·K (20.8 BTU/hr·ft·°F), worse than 86% of copper alloy grades
- Low electrical conductivity — 8 % IACS, worse than 81% of copper alloy grades
- Limited formability — 15/100, worse than 79% of copper alloy grades
C86200 properties
Typical room-temperature values for C86200-M01; bars are the position among copper alloy grades.
Physical3
C86200 has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 90% of copper alloy grades. It melts at 862°C (1,584 °F).
Mechanical14
C86200 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 71% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 105 GPa (15.2 Msi).
Thermal5
C86200 is rated for continuous service to 200°C (392 °F). It conducts heat at 36 W/m·K (20.8 BTU/hr·ft·°F), worse than 86% of copper alloy grades. Thermal expansion is 20.3 µm/m·K (11.3 µin/in·°F).
Electrical3
C86200 conducts electricity at 8 % IACS, worse than 81% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of C86200 takes about 45 MJ of energy and emits 3 kg of CO₂ — less than 97% of copper alloy grades. Typical recycled content is 70%.
Manufacturability7
C86200's machinability is poor (32/100, worse than 57% of copper alloy grades); weldability fair (40/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the copper alloy family
Yield strength against density for every copper alloy grade FabDigit runs. C86200 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C86200
Is C86200 easy to machine?
Machinability ~30% of free-cutting brass — tough, stringy chips; use sharp positive-rake carbide, rigid setups, moderate speeds and generous coolant.
Can C86200 be welded?
Arc (GTAW/GMAW) welding with matching aluminum-bronze/manganese-bronze filler is fair; preheat and low heat input, avoid oxyfuel due to Al oxide film; soldering is poor.
Can C86200 be formed, bent or molded?
Casting alloy only — sand, permanent mold, centrifugal and continuous cast; degas and skim well to avoid Al oxide dross and control pouring turbulence.
C86200 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cu | 60 – 66 | 63 |
| Al | 3 – 4.9 | 4 |
| Fe | 2 – 4 | 3 |
| Mn | 2.5 – 5 | 3.5 |
| Niincluding Co | ≤ 1 | |
| Sn | ≤ 0.2 | |
| Pb | ≤ 0.2 | |
| Zn | ≥ 22 (balance) |
What surface finishes work on C86200?
Polishes to a bright gold tone; can be chrome/nickel plated after proper strike, and often left bare with protective lacquer for marine service.
Surface treatments FabDigit runs on copper alloy parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
How much does C86200 cost?
C86200 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
C86200 — frequently asked
What is C86200 used for?
C86200 is typically used for gears, valve stems, marine fittings and heavy machinery parts. In short: high-strength cast bronze; tough marine casting alloy; stronger than C86500.
What is the yield strength of C86200?
C86200 has a typical yield strength of 340 MPa (49.3 ksi) and a tensile strength of 690 MPa (100 ksi) — stronger than 71% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C86200 easy to machine?
Not especially — machinability is rated poor (32/100, worse than 57% of copper alloy grades). Machinability ~30% of free-cutting brass — tough, stringy chips; use sharp positive-rake carbide, rigid setups, moderate speeds and generous coolant.
Can C86200 be welded?
With care — weldability is rated fair (40/100). Arc (GTAW/GMAW) welding with matching aluminum-bronze/manganese-bronze filler is fair; preheat and low heat input, avoid oxyfuel due to Al oxide film; soldering is poor.
What surface finishes work on C86200?
Polishes to a bright gold tone; can be chrome/nickel plated after proper strike, and often left bare with protective lacquer for marine service.
Can C86200 be formed, bent or molded?
Casting alloy only — sand, permanent mold, centrifugal and continuous cast; degas and skim well to avoid Al oxide dross and control pouring turbulence.
What is the maximum service temperature of C86200?
C86200 is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C86200-M01 and C86200-M02?
M01 is the default condition — standard as-cast sand casting condition per ASTM B584 — the usual stocked/produced form for gears, valve stems and marine parts. M02: pick for hollow bushings, worm-gear blanks and rings where the denser, finer centrifugal structure gives slightly higher strength and soundness. Yield strength is 340 MPa in M01 versus 350 MPa in M02.
How much does C86200 cost?
C86200 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM B584 — Standard Specification for Copper Alloy Sand Castings for General Applications — ASTM International (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM International (2018)
- ASTM B271 — Copper-Base Alloy Centrifugal Castings — ASTM International (2020)
- CDA Alloy Database — C86200 Manganese Bronze — Copper Development Association (2023)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASTM B601 — Temper Designations for Copper and Copper Alloys — ASTM International (2019)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.