Copper Alloy C95300-TQ50
Supply condition
UNS C95300
Choose when higher strength, hardness and wear resistance are required for heavily loaded gears, worm wheels and bearing surfaces; ductility and impact toughness drop.
Values for the TQ50 condition
Other C95300 tempers and conditions
C95300 is listed in 3 conditions; see the grade overview at C95300.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
M01Default As sand cast | Standard stocked condition for gears, bushings and valve parts where 450 MPa UTS and high ductility are sufficient. | 170 | 450 | 25 | 110 HB | 13 % IACS |
As continuous cast | Pick for round bar, sleeves and thick-wall bushing stock: denser, finer structure gives modestly higher strength and hardness than sand castings. | 195 | 480 | 22 | 120 HB | — |
TQ50This page quench hardened and temper annealed | Choose when higher strength, hardness and wear resistance are required for heavily loaded gears, worm wheels and bearing surfaces; ductility and impact toughness drop. | 330 | 620 | 15 | 190 HB | 13 % IACS |
What is C95300-TQ50?
C95300-TQ50 is C95300 supplied in the TQ50 condition — choose when higher strength, hardness and wear resistance are required for heavily loaded gears, worm wheels and bearing surfaces; ductility and impact toughness drop. C95300-TQ50 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 110 GPa (16 Msi). C95300-TQ50 has a density of 7.53 g/cm³ (0.272 lb/in³), lighter than 96% of copper alloy grades. It melts at 1,038°C (1,900 °F). M01 is the default condition FabDigit quotes; TQ50 is available on request or by drawing note.
Advantages
- Lightweight — 7.53 g/cm³ (0.272 lb/in³), better than 96% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Good corrosion resistance — 72/100, better than 84% of copper alloy grades
- Readily welded — 60/100, better than 76% of copper alloy grades
C95300-TQ50 properties
Typical room-temperature values for C95300-TQ50; 36 are specific to this condition. Other listed values are C95300 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C95300-TQ50 has a density of 7.53 g/cm³ (0.272 lb/in³), lighter than 96% of copper alloy grades. It melts at 1,038°C (1,900 °F).
Mechanical14
C95300-TQ50 has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 69% of copper alloy grades. Elongation at break is 15% and the elastic modulus is 110 GPa (16 Msi).
Thermal6
C95300-TQ50 is rated for continuous service to 300°C (572 °F). It conducts heat at 59 W/m·K (34.1 BTU/hr·ft·°F), worse than 61% of copper alloy grades. Thermal expansion is 16.2 µm/m·K (9 µin/in·°F).
Electrical3
C95300-TQ50 conducts electricity at 13 % IACS, worse than 58% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (72/100), better than 84% of copper alloy grades.
Sustainability4
Producing a kilogram of C95300-TQ50 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 60%.
Manufacturability8
C95300-TQ50's machinability is fair (50/100, better than 69% of copper alloy grades); weldability good (60/100); formability poor (25/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C95300-TQ50
Is C95300 easy to machine?
Machines as a tough, gummy alloy — rigid setups, positive-rake carbide, moderate speeds and generous coolant; expect ~55 % of AISI 1212 rates and chip-breaking rather than free chips.
Can C95300 be welded?
Weldable by GTAW/GMAW with ERCuAl-A2 filler; remove the alumina film mechanically or with a suitable flux, preheat heavy sections lightly and avoid excessive interpass heat.
Can C95300 be formed, bent or molded?
Casting alloy only (sand, centrifugal, continuous); use bottom gating and generous filters/risers to avoid alumina dross and shrinkage in heavy sections.
What surface finishes work on C95300?
Not anodizable; take a good mechanical polish, accepts electroless nickel or chrome plating after activation, and self-passivates to a stable brown-gold patina in service.
C95300 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 |
|---|---|---|
| Al | 9 – 11 | 10 |
| Fe | 0.8 – 1.5 | 1.1 |
| CuCu + named elements 99.0 % min per ASTM B148 | ≥ 86 (balance) | — |
C95300-TQ50 — frequently asked
What is C95300-TQ50 used for?
C95300-TQ50 is typically used for gears, bearings and wear plates. In short: wear-resistant aluminium bronze; 300 °C service capability; weldable but gummy to cut.
What is the yield strength of C95300-TQ50?
C95300-TQ50 has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 620 MPa (89.9 ksi) — stronger than 69% of copper alloy grades. Strength varies by condition: see the 3 listed tempers.
Is C95300-TQ50 easy to machine?
Reasonably — machinability is rated fair (50/100, better than 69% of copper alloy grades). Machines as a tough, gummy alloy — rigid setups, positive-rake carbide, moderate speeds and generous coolant; expect ~55 % of AISI 1212 rates and chip-breaking rather than free chips.
Can C95300-TQ50 be welded?
Yes — weldability is rated good (60/100). Weldable by GTAW/GMAW with ERCuAl-A2 filler; remove the alumina film mechanically or with a suitable flux, preheat heavy sections lightly and avoid excessive interpass heat.
What surface finishes work on C95300-TQ50?
Not anodizable; take a good mechanical polish, accepts electroless nickel or chrome plating after activation, and self-passivates to a stable brown-gold patina in service.
Can C95300-TQ50 be formed, bent or molded?
Casting alloy only (sand, centrifugal, continuous); use bottom gating and generous filters/risers to avoid alumina dross and shrinkage in heavy sections.
What is the maximum service temperature of C95300-TQ50?
C95300-TQ50 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 C95300-M01 and C95300-TQ50?
M01 is the default condition — standard stocked condition for gears, bushings and valve parts where 450 MPa UTS and high ductility are sufficient. TQ50: choose when higher strength, hardness and wear resistance are required for heavily loaded gears, worm wheels and bearing surfaces; ductility and impact toughness drop. Yield strength is 170 MPa in M01 versus 330 MPa in TQ50.
Sources
- ASTM B148 — Standard Specification for Aluminum-Bronze Sand Castings — ASTM International (2019)
- Copper Alloy C95300 alloy datasheet (properties, machinability, conductivity) — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- GB/T 1176 (ZCuAl10Fe3 equivalent) — SAC / (2013)
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.