Copper Alloy C93800-M01
Finish state
UNS C93800 · AISI/SAE 67
M01 = as sand cast
Pick for shaped castings, pump housings and large bearing shells made to ASTM B584.
Values for the M01 condition
Other C93800 tempers and conditions
C93800 is listed in 4 conditions; see the grade overview at C93800.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
M01This page As sand cast | Pick for shaped castings, pump housings and large bearing shells made to ASTM B584. | 110 | 207 | 18 | 55 HB | 11.5 % IACS |
As centrifugally cast | Best for large-diameter sleeves and thick-wall bushings needing sound, segregation-free walls. | 124 | 221 | 12 | 60 HB | 11.5 % IACS |
As pressure die cast | Used for repeat small parts where a chilled, finer structure and better dimensional repeatability are wanted. | 124 | 214 | 12 | 62 HB | 11.5 % IACS |
M07Default As continuous cast | Standard stock form for bushing and bearing bar: dense, fine-grained, best strength of the cast forms. | 131 | 214 | 12 | 60 HB | 11.5 % IACS |
What is C93800-M01?
C93800-M01 is C93800 supplied in the M01 condition — pick for shaped castings, pump housings and large bearing shells made to ASTM B584. C93800-M01 has a yield strength of 110 MPa (16 ksi) and a tensile strength of 207 MPa (30 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 70 GPa (10.2 Msi). C93800-M01 has a density of 9.3 g/cm³ (0.336 lb/in³), heavier than 99% of copper alloy grades. It melts at 762°C (1,404 °F). M07 is the default condition FabDigit quotes; M01 is available on request or by drawing note.
Advantages
- Easy to machine — 85/100, better than 93% of copper alloy grades
Limitations
- Low stiffness — 70 GPa (10.2 Msi), worse than 100% of copper alloy grades
- Difficult to weld — 12/100, worse than 96% of copper alloy grades
- Hard to polish — 60/100, worse than 92% of copper alloy grades
- Limited formability — 10/100, worse than 89% of copper alloy grades
- Low strength — 110 MPa (16 ksi), worse than 82% of copper alloy grades
C93800-M01 properties
Typical room-temperature values for C93800-M01; 19 are specific to this condition. Other listed values are C93800 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C93800-M01 has a density of 9.3 g/cm³ (0.336 lb/in³), heavier than 99% of copper alloy grades. It melts at 762°C (1,404 °F).
Mechanical12
C93800-M01 has a yield strength of 110 MPa (16 ksi) and a tensile strength of 207 MPa (30 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 70 GPa (10.2 Msi).
Thermal5
C93800-M01 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 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
C93800-M01 conducts electricity at 11.5 % IACS, worse than 65% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 76% of copper alloy grades.
Sustainability4
Producing a kilogram of C93800-M01 takes about 50 MJ of energy and emits 3.6 kg of CO₂ — less than 89% of copper alloy grades. Typical recycled content is 85%.
Manufacturability7
C93800-M01's machinability is excellent (85/100, better than 93% of copper alloy grades); weldability not recommended (12/100); formability not recommended (10/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C93800-M01
Is C93800 easy to machine?
Excellent free-machining bronze (≈80% of AISI 1212); use sharp positive-rake tools, light feeds and coolant to avoid lead smear on bearing bores.
Can C93800 be welded?
Not weldable — lead causes hot cracking; joining is by soft soldering or mechanical/press fitting only.
Can C93800 be formed, bent or molded?
Cast only (sand, centrifugal, permanent mold, continuous); wide freezing range needs good gating/feeding, no cold forming.
What surface finishes work on C93800?
Machined finish is normally left as-is; can be soft-soldered or tin/lead plated, but polishing and electroplating adhesion suffer from surface lead.
C93800 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 | 75 – 79 | 77 |
| Sn | 6.3 – 7.5 | 7 |
| Pb | 13 – 16 | 15 |
| Zn | ≤ 0.8 | — |
| Fe | ≤ 0.15 | — |
| Sb | ≤ 0.8 | — |
| NiNi + Co, max | ≤ 1 | — |
| S | ≤ 0.08 | — |
| Pmax (1.5 max permitted for continuous cast per B505) | ≤ 0.05 | — |
| Al | ≤ 0.01 | — |
| Si | ≤ 0.01 | — |
C93800-M01 — frequently asked
What is C93800-M01 used for?
C93800-M01 is typically used for heavy-duty bearings, bushings and gear blanks. In short: highest-lead heavy-duty bearing bronze; excellent anti-friction under shock; cast only, not weldable.
What is the yield strength of C93800-M01?
C93800-M01 has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 207 MPa (30 ksi) — weaker than 82% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is C93800-M01 easy to machine?
Yes — machinability is rated excellent (85/100, better than 93% of copper alloy grades). Excellent free-machining bronze (≈80% of AISI 1212); use sharp positive-rake tools, light feeds and coolant to avoid lead smear on bearing bores.
Can C93800-M01 be welded?
Not readily — weldability is rated not recommended (12/100). Not weldable — lead causes hot cracking; joining is by soft soldering or mechanical/press fitting only.
What surface finishes work on C93800-M01?
Machined finish is normally left as-is; can be soft-soldered or tin/lead plated, but polishing and electroplating adhesion suffer from surface lead.
Can C93800-M01 be formed, bent or molded?
Cast only (sand, centrifugal, permanent mold, continuous); wide freezing range needs good gating/feeding, no cold forming.
What is the maximum service temperature of C93800-M01?
C93800-M01 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.
What is the difference between C93800-M07 and C93800-M01?
M07 is the default condition — standard stock form for bushing and bearing bar: dense, fine-grained, best strength of the cast forms. M01: pick for shaped castings, pump housings and large bearing shells made to ASTM B584. Yield strength is 131 MPa in M07 versus 110 MPa in M01.
Sources
- ASTM B584 — Copper Alloy Sand Castings for General Applications — ASTM (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM (2018)
- ASTM B271 — Copper-Base Alloy Centrifugal Castings — ASTM (2020)
- CDA Alloy Datasheet C93800 (SAE 67, high-leaded tin bronze) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- GB/T 1176 (ZCuPb20Sn5) (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.