Copper Alloy BrAZhMts10-3-1.5-HT (Heat treated)
Heat-treated state
Use when maximum hardness and wear resistance on heavy-duty gears/valve trim is required.
Values for the HT condition
Other BrAZhMts10-3-1.5 tempers and conditions
BrAZhMts10-3-1.5 is listed in 5 conditions; see the grade overview at BrAZhMts10-3-1.5.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SANDDefault Sand cast | Default stocked condition for large gear blanks, housings and propeller castings. | 200 | 490 | 12 | 120 HB | 13 % IACS |
Chill / permanent-mould cast | Pick for smaller series parts needing finer grain and ~10 % higher strength than sand cast. | 230 | 550 | 14 | 130 HB | 13 % IACS |
Centrifugally cast | Best choice for bushings, worm-wheel rims and sleeves — dense, porosity-free wall. | 240 | 570 | 14 | 135 HB | 13 % IACS |
Annealed | Softened condition for further hot/warm forming or when maximum ductility is needed. | 240 | 560 | 20 | 140 HB | 13 % IACS |
HTThis page Heat treated | Use when maximum hardness and wear resistance on heavy-duty gears/valve trim is required. | 320 | 655 | 8 | 14 HRC | 12 % IACS |
What is BrAZhMts10-3-1.5-HT?
BrAZhMts10-3-1.5-HT is BrAZhMts10-3-1.5 heat treated to HT — use when maximum hardness and wear resistance on heavy-duty gears/valve trim is required. BrAZhMts10-3-1.5-HT has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 655 MPa (95 ksi) — stronger than 68% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 112 GPa (16.2 Msi). BrAZhMts10-3-1.5-HT has a density of 7.5 g/cm³ (0.271 lb/in³), lighter than 98% of copper alloy grades. It melts at 1,040°C (1,904 °F). SAND is the default condition FabDigit quotes; HT is available on request or by drawing note.
Advantages
- Lightweight — 7.5 g/cm³ (0.271 lb/in³), better than 98% of copper alloy grades
- Good corrosion resistance — 78/100, better than 94% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
Limitations
- Low fracture toughness — 25 MPa·√m (22.8 ksi·√in), worse than 95% of copper alloy grades
- Limited formability — 12/100, worse than 85% of copper alloy grades
- Limited ductility — 8%, worse than 83% of copper alloy grades
BrAZhMts10-3-1.5-HT properties
Typical room-temperature values for BrAZhMts10-3-1.5-HT; 23 are specific to this condition. Other listed values are BrAZhMts10-3-1.5 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
BrAZhMts10-3-1.5-HT has a density of 7.5 g/cm³ (0.271 lb/in³), lighter than 98% of copper alloy grades. It melts at 1,040°C (1,904 °F).
Mechanical16
BrAZhMts10-3-1.5-HT has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 655 MPa (95 ksi) — stronger than 68% of copper alloy grades. Elongation at break is 8% and the elastic modulus is 112 GPa (16.2 Msi).
Thermal6
BrAZhMts10-3-1.5-HT is rated for continuous service to 300°C (572 °F). It conducts heat at 56 W/m·K (32.4 BTU/hr·ft·°F), worse than 64% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
BrAZhMts10-3-1.5-HT conducts electricity at 12 % IACS, worse than 62% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 94% of copper alloy grades.
Sustainability4
Producing a kilogram of BrAZhMts10-3-1.5-HT takes about 60 MJ of energy and emits 4 kg of CO₂ — more than 69% of copper alloy grades. Typical recycled content is 45%.
Manufacturability8
BrAZhMts10-3-1.5-HT's machinability is fair (35/100, better than 51% of copper alloy grades); weldability good (55/100); formability not recommended (12/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with BrAZhMts10-3-1.5-HT
Is BrAZhMts10-3-1.5 easy to machine?
Machines like a tough ductile bronze: rigid setup, positive-rake carbide, 60–120 m/min, moderate feed and flood coolant; it work-hardens and produces stringy chips, so avoid dwelling and use chip-breaking geometry.
Can BrAZhMts10-3-1.5 be welded?
Weldable by GTAW/GMAW with matching Cu-Al filler (ERCuAl-A2) under argon; wire-brush/clean the Al₂O₃ film immediately before welding, preheat 150–250 °C on heavy sections and avoid slow cooling through 320–600 °C.
Can BrAZhMts10-3-1.5 be formed, bent or molded?
Hot work or press-forge at 750–900 °C; cold formability is limited by the α+κ duplex structure. As a casting it needs bottom gating, generous risers and quiescent filling to avoid entrained oxide films.
What surface finishes work on BrAZhMts10-3-1.5?
Not anodisable; finish by pickling/passivation, shot blast, or polish to a golden bronze lustre, and apply lacquer or accept a natural protective patina. Chrome or EN plating is possible after thorough oxide removal.
BrAZhMts10-3-1.5 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 |
|---|---|---|
| Alprimary strengthener, forms α+κ duplex structure | 9 – 11 | 10 |
| Fegrain refiner, Fe-rich κ phase for wear resistance | 2 – 4 | 3 |
| Mndeoxidiser, improves toughness and castability | 1 – 2 | 1.5 |
| Znimpurity limit | ≤ 1 | — |
| Siimpurity limit | ≤ 0.1 | — |
| Snimpurity limit | ≤ 0.1 | — |
| Pbimpurity limit | ≤ 0.03 | — |
| Pimpurity limit | ≤ 0.01 | — |
| Nicounted with impurities in GOST | ≤ 0.5 | — |
| Cubalance; total impurities ≤ 1.0 % | balance | — |
BrAZhMts10-3-1.5-HT — frequently asked
What is BrAZhMts10-3-1.5-HT used for?
BrAZhMts10-3-1.5-HT is typically used for marine propellers, heavy-duty gears and structural castings. In short: strongest common cast aluminium bronze; heavy-duty gear and propeller alloy; good galling resistance.
What is the yield strength of BrAZhMts10-3-1.5-HT?
BrAZhMts10-3-1.5-HT has a typical yield strength of 320 MPa (46.4 ksi) and a tensile strength of 655 MPa (95 ksi) — stronger than 68% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is BrAZhMts10-3-1.5-HT easy to machine?
Not especially — machinability is rated fair (35/100, better than 51% of copper alloy grades). Machines like a tough ductile bronze: rigid setup, positive-rake carbide, 60–120 m/min, moderate feed and flood coolant; it work-hardens and produces stringy chips, so avoid dwelling and use chip-breaking geometry.
Can BrAZhMts10-3-1.5-HT be welded?
Yes — weldability is rated good (55/100). Weldable by GTAW/GMAW with matching Cu-Al filler (ERCuAl-A2) under argon; wire-brush/clean the Al₂O₃ film immediately before welding, preheat 150–250 °C on heavy sections and avoid slow cooling through 320–600 °C.
What surface finishes work on BrAZhMts10-3-1.5-HT?
Not anodisable; finish by pickling/passivation, shot blast, or polish to a golden bronze lustre, and apply lacquer or accept a natural protective patina. Chrome or EN plating is possible after thorough oxide removal.
Can BrAZhMts10-3-1.5-HT be formed, bent or molded?
Hot work or press-forge at 750–900 °C; cold formability is limited by the α+κ duplex structure. As a casting it needs bottom gating, generous risers and quiescent filling to avoid entrained oxide films.
What is the maximum service temperature of BrAZhMts10-3-1.5-HT?
BrAZhMts10-3-1.5-HT is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between BrAZhMts10-3-1.5 SAND and BrAZhMts10-3-1.5-HT?
SAND is the default condition — default stocked condition for large gear blanks, housings and propeller castings. HT: use when maximum hardness and wear resistance on heavy-duty gears/valve trim is required. Yield strength is 200 MPa in SAND versus 320 MPa in HT.
Sources
- GOST 493-79 — Cast tin-free bronzes (БрАЖМц10-3-1.5) — Gosstandart (1979)
- GOST 18175-78 — Wrought tin-free bronzes — Gosstandart (1978)
- GB/T 1176 / GB/T 4423 — / (QAl10-3-1.5) — SAC (2013)
- ASTM B148 — Aluminum-Bronze Sand Castings (C95400) — ASTM (2018)
- ASM Handbook Vol. 2 — Properties of Copper and Copper Alloys — ASM International (1990)
- CDA alloy datasheet C95400 — Copper Development Association (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.