Copper Alloy HBsC1
HBsC1 is a JIS H5120 high-strength brass of the manganese-bronze type, offering 180 MPa yield, 490 MPa tensile, 28% elongation and about 100 HB in the default condition, with service to 200 °C.
Reference datasheet — HBsC1 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 F-SAND condition
HBsC1 tempers and conditions
HBsC1 is supplied in 5 conditions, soft to hard. F-SAND is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress relieved | Use when castings are welded, heavily machined or serve in ammonia/marine environments where residual-stress cracking must be avoided. | 175 | 480 | 30 | 95 HB | 23 % IACS |
F-SANDDefault F | Standard as-cast sand-mould condition; the normal stocked/ordered form for gears, marine fittings and general high-strength brass castings. | 180 | 490 | 28 | 100 HB | 22 % IACS |
F | Semi-finished continuously cast rod or hollow bar for machined bushings and nuts; uniform structure, minimal machining allowance. | 195 | 500 | 26 | 100 HB | 22 % IACS |
F | Choose for higher-volume small parts needing finer grain, better surface and slightly higher strength than sand casting. | 200 | 510 | 25 | 105 HB | 22 % IACS |
F | Pick for bushings, worm-gear rims and sleeves where dense, porosity-free rings with best mechanical consistency are required. | 205 | 520 | 25 | 105 HB | 22 % IACS |
What is HBsC1?
HBsC1 is a JIS H5120 high-strength brass of the manganese-bronze type, offering 180 MPa yield, 490 MPa tensile, 28% elongation and about 100 HB in the default condition, with service to 200 °C. It is cast in sand, permanent-mould, centrifugal and continuous processes and supplied stress-relieved, which suits gears and marine components loaded beyond the range of leaded yellow brass. The low-lead beta structure machines at only 25-30% of free-cutting brass, shrinkage is high, and stagnant seawater can cause dezincification. Where machinability dominates, YBsC3 is the nearer choice. HBsC1 has a density of 8.3 g/cm³ (0.3 lb/in³), lighter than 80% of copper alloy grades. It melts at 862°C (1,584 °F). HBsC1 has a yield strength of 180 MPa (26.1 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 59% of copper alloy grades. Elongation at break is 28% and the elastic modulus is 103 GPa (14.9 Msi).
What is HBsC1 used for?
- marine propeller hubs
- gears
- structural castings
Advantages
- Low embodied carbon — 2.8 kg CO₂/kg, better than 100% of copper alloy grades
HBsC1 properties
Typical room-temperature values for HBsC1-F-SAND; bars are the position among copper alloy grades.
Physical3
HBsC1 has a density of 8.3 g/cm³ (0.3 lb/in³), lighter than 80% of copper alloy grades. It melts at 862°C (1,584 °F).
Mechanical15
HBsC1 has a yield strength of 180 MPa (26.1 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 59% of copper alloy grades. Elongation at break is 28% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
HBsC1 is rated for continuous service to 200°C (392 °F). It conducts heat at 86 W/m·K (49.7 BTU/hr·ft·°F), better than 52% of copper alloy grades. Thermal expansion is 21.6 µm/m·K (12 µin/in·°F).
Electrical3
HBsC1 conducts electricity at 22 % IACS, better than 55% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 86% of copper alloy grades.
Sustainability4
Producing a kilogram of HBsC1 takes about 45 MJ of energy and emits 2.8 kg of CO₂ — less than 97% of copper alloy grades. Typical recycled content is 70%.
Manufacturability8
HBsC1's machinability is poor (32/100, worse than 57% of copper alloy grades); weldability fair (35/100); formability poor (20/100).
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. HBsC1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with HBsC1
Is HBsC1 easy to machine?
Machines to roughly 25–30 % of free-cutting brass: use sharp positive-rake carbide, moderate speed and flood coolant since the low-Pb β-phase structure is gummy and tears at low feed.
Can HBsC1 be welded?
GTAW/GMAW with silicon-bronze or aluminium-bronze filler is possible for repair; expect zinc fume and porosity, preheat 150–200 °C and stress-relieve after welding.
Can HBsC1 be formed, bent or molded?
A casting alloy only — good fluidity in sand, permanent mould, centrifugal and continuous casting; needs generous risering because of a fairly wide freezing range and high shrinkage.
HBsC1 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 | 55 – 60 | 57.5 |
| Al | 0.5 – 1.5 | 1 |
| Fe | 0.5 – 1.5 | 1 |
| Mn | 0.1 – 1.5 | 0.5 |
| Snimpurity limit | ≤ 1 | |
| Pbimpurity limit | ≤ 0.4 | |
| Znremainder, approx. 33–42 % | balance |
What surface finishes work on HBsC1?
Takes a bright mechanical polish and accepts Ni/Cr or tin plating and chemical patination; not anodizable, and lacquer or cathodic protection is advisable in stagnant seawater to limit dezincification.
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 HBsC1 cost?
HBsC1 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.
HBsC1 — frequently asked
What is HBsC1 used for?
HBsC1 is typically used for marine propeller hubs, gears and structural castings. In short: high-strength JIS cast brass; weld-repairable manganese bronze; gummy, low machinability.
What is the yield strength of HBsC1?
HBsC1 has a typical yield strength of 180 MPa (26.1 ksi) and a tensile strength of 490 MPa (71.1 ksi) — weaker than 59% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is HBsC1 easy to machine?
Not especially — machinability is rated poor (32/100, worse than 57% of copper alloy grades). Machines to roughly 25–30 % of free-cutting brass: use sharp positive-rake carbide, moderate speed and flood coolant since the low-Pb β-phase structure is gummy and tears at low feed.
Can HBsC1 be welded?
With care — weldability is rated fair (35/100). GTAW/GMAW with silicon-bronze or aluminium-bronze filler is possible for repair; expect zinc fume and porosity, preheat 150–200 °C and stress-relieve after welding.
What surface finishes work on HBsC1?
Takes a bright mechanical polish and accepts Ni/Cr or tin plating and chemical patination; not anodizable, and lacquer or cathodic protection is advisable in stagnant seawater to limit dezincification.
Can HBsC1 be formed, bent or molded?
A casting alloy only — good fluidity in sand, permanent mould, centrifugal and continuous casting; needs generous risering because of a fairly wide freezing range and high shrinkage.
What is the maximum service temperature of HBsC1?
HBsC1 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 HBsC1 F-SAND and HBsC1 F-CENT?
F-SAND is the default condition — standard as-cast sand-mould condition; the normal stocked/ordered form for gears, marine fittings and general high-strength brass castings. F-CENT: pick for bushings, worm-gear rims and sleeves where dense, porosity-free rings with best mechanical consistency are required. Yield strength is 180 MPa in F-SAND versus 205 MPa in F-CENT.
How much does HBsC1 cost?
HBsC1 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
- JIS H5120 Copper and copper alloy castings (CAC301 / HBsC1) — JSA (2016)
- C86500 alloy datasheet (manganese bronze) — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (copper alloys in seawater) — ASM International (2005)
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.