Copper Alloy C93200 Permanent Mold Cast
Finish state
UNS C93200 · AISI/SAE 660, 660 Bronze · ASTM B584 C93200
Chosen for medium-volume small bushings/thrust washers needing better surface and dimensional repeatability than sand.
Values for the Permanent Mold Cast condition
Other C93200 tempers and conditions
C93200 is listed in 4 conditions; see the grade overview at C93200.
- As Cast
- Permanent Mold Cast
- Centrifugal Cast
- Continuous Cast
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As CastDefault sand cast (ASTM B584), no heat treatment | Default stock condition for sand-cast bushings, bearing blanks and complex housings. | 125 | 240 | 20 | 65 HB | 12 % IACS |
Permanent Mold CastThis page metal-mold castings | Chosen for medium-volume small bushings/thrust washers needing better surface and dimensional repeatability than sand. | 130 | 250 | 18 | 67 HB | 12 % IACS |
spun cast sleeves and large bushings | Use for large-diameter sleeves where a dense, porosity-free wall and near-net bore are needed. | 135 | 255 | 18 | 68 HB | 12 % IACS |
ASTM B505 continuous-cast bar/tube | Pick for standard bushing stock: finer, denser structure gives slightly higher strength and hardness than sand cast. | 145 | 275 | 15 | 70 HB | 12 % IACS |
What is C93200 Permanent Mold Cast?
C93200 Permanent Mold Cast is C93200 supplied in the Permanent Mold Cast condition — chosen for medium-volume small bushings/thrust washers needing better surface and dimensional repeatability than sand. C93200 Permanent Mold Cast has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 77% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 100 GPa (14.5 Msi). C93200 Permanent Mold Cast has a density of 8.93 g/cm³ (0.323 lb/in³), heavier than 82% of copper alloy grades. It melts at 854°C (1,569 °F). As Cast is the default condition FabDigit quotes; Permanent Mold Cast is available on request or by drawing note.
Advantages
- Easy to machine — 78/100, better than 82% of copper alloy grades
Limitations
- Difficult to weld — 15/100, worse than 94% of copper alloy grades
- Limited formability — 8/100, worse than 94% of copper alloy grades
- Hard to polish — 60/100, worse than 92% of copper alloy grades
- Low stiffness — 100 GPa (14.5 Msi), worse than 82% of copper alloy grades
- Low strength — 130 MPa (18.9 ksi), worse than 77% of copper alloy grades
C93200 Permanent Mold Cast properties
Typical room-temperature values for C93200 Permanent Mold Cast; 21 are specific to this condition. Other listed values are C93200 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C93200 Permanent Mold Cast has a density of 8.93 g/cm³ (0.323 lb/in³), heavier than 82% of copper alloy grades. It melts at 854°C (1,569 °F).
Mechanical14
C93200 Permanent Mold Cast has a yield strength of 130 MPa (18.9 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 77% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 100 GPa (14.5 Msi).
Thermal6
C93200 Permanent Mold Cast is rated for continuous service to 230°C (446 °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 18 µm/m·K (10 µin/in·°F).
Electrical3
C93200 Permanent Mold Cast conducts electricity at 12 % IACS, worse than 62% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C93200 Permanent Mold Cast takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 85%.
Manufacturability8
C93200 Permanent Mold Cast's machinability is very good (78/100, better than 82% of copper alloy grades); weldability poor (15/100); formability not recommended (8/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C93200 Permanent Mold Cast
Is C93200 easy to machine?
Excellent free-cutting behaviour (~70 % of C36000); use sharp positive-rake tools, high speed, light feeds and flood coolant — lead gives short chips and fine bores.
Can C93200 be welded?
Not weldable — lead causes hot cracking and fumes; repair by mechanical means or replace, soft soldering is acceptable.
Can C93200 be formed, bent or molded?
Casting alloy only: good fluidity for sand, continuous, permanent-mold and centrifugal casting; no cold forming, hot working not practised.
What surface finishes work on C93200?
Machine or burnish bores to size; tin, nickel or silver plating and light polishing work well, no anodizing; handle lead-bearing swarf per local regulations.
C93200 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 |
|---|---|---|
| Cuper ASTM B584/B505 | 81 – 85 | 83 |
| Sn | 6.3 – 7.5 | 7 |
| Pbfree-machining / self-lubricating phase | 6 – 8 | 7 |
| Zn | 1 – 4 | 3 |
| NiNi incl. Co | ≤ 1 | — |
| Fe | ≤ 0.2 | — |
| Sb | ≤ 0.35 | — |
| P | ≤ 0.15 | — |
| S | ≤ 0.08 | — |
| Al | ≤ 0.01 | — |
| Si | ≤ 0.01 | — |
C93200 Permanent Mold Cast — frequently asked
What is C93200 Permanent Mold Cast used for?
C93200 Permanent Mold Cast is typically used for bearings, lathe bushings and pump fixtures. In short: standard bearing bronze.
What is the yield strength of C93200 Permanent Mold Cast?
C93200 Permanent Mold Cast has a typical yield strength of 130 MPa (18.9 ksi) and a tensile strength of 250 MPa (36.3 ksi) — weaker than 77% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C93200 Permanent Mold Cast easy to machine?
Yes — machinability is rated very good (78/100, better than 82% of copper alloy grades). Excellent free-cutting behaviour (~70 % of C36000); use sharp positive-rake tools, high speed, light feeds and flood coolant — lead gives short chips and fine bores.
Can C93200 Permanent Mold Cast be welded?
Not readily — weldability is rated poor (15/100). Not weldable — lead causes hot cracking and fumes; repair by mechanical means or replace, soft soldering is acceptable.
What surface finishes work on C93200 Permanent Mold Cast?
Machine or burnish bores to size; tin, nickel or silver plating and light polishing work well, no anodizing; handle lead-bearing swarf per local regulations.
Can C93200 Permanent Mold Cast be formed, bent or molded?
Casting alloy only: good fluidity for sand, continuous, permanent-mold and centrifugal casting; no cold forming, hot working not practised.
What is the maximum service temperature of C93200 Permanent Mold Cast?
C93200 Permanent Mold Cast is rated for continuous use to about 230°C (446 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in C93200 Permanent Mold Cast?
Yes — C93200 Permanent Mold Cast is available for CNC machining and casting & forging with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B584 — Copper Alloy Sand Castings for General Applications — ASTM (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM (2018)
- SAE J462 — Cast Copper Alloys (SAE 660) — SAE International (2016)
- CDA Alloy Datasheet C93200 (High Leaded Tin Bronze) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
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.