Copper Alloy C90300-M01
Finish state · default condition
UNS C90300 · AISI/SAE 622 · ASTM B584 C90300
M01 = as sand cast
Standard ASTM B584 sand casting condition for valve bodies, pump housings and general pressure castings.
Values for the M01 condition
Other C90300 tempers and conditions
C90300 is listed in 5 conditions; see the grade overview at C90300.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As investment cast | Investment casting for small, intricate near-net-shape parts where machining allowance must be minimal. | 140 | 295 | 25 | 70 HB | 12 % IACS |
M01DefaultThis page As sand cast | Standard ASTM B584 sand casting condition for valve bodies, pump housings and general pressure castings. | 145 | 310 | 30 | 70 HB | 12 % IACS |
As centrifugally cast | Choose for rings, sleeves, bushings and large bearing shells needing dense, porosity-free walls (ASTM B271). | 155 | 330 | 25 | 75 HB | 12 % IACS |
As plaster cast | Permanent-mold castings for repeat parts with better surface and slightly higher strength than sand casting. | 160 | 325 | 20 | 75 HB | 12 % IACS |
As continuous cast | Continuous-cast bar/tube stock (ASTM B505) with the finest structure and highest yield strength — best for machined bushings and worm gears. | 172 | 330 | 16 | 80 HB | 12 % IACS |
What is C90300-M01?
C90300-M01 is C90300 supplied in the M01 condition — standard ASTM B584 sand casting condition for valve bodies, pump housings and general pressure castings. C90300-M01 has a yield strength of 145 MPa (21 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 72% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 103 GPa (14.9 Msi). C90300-M01 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 854°C (1,569 °F).
Advantages
- Ductile — tolerates forming and impact — 30%, better than 75% of copper alloy grades
- High service temperature — 260°C (500 °F), better than 75% of copper alloy grades
Limitations
- Limited formability — 15/100, worse than 79% of copper alloy grades
C90300-M01 properties
Typical room-temperature values for C90300-M01; 10 are specific to this condition. Other listed values are C90300 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C90300-M01 has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 854°C (1,569 °F).
Mechanical12
C90300-M01 has a yield strength of 145 MPa (21 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 72% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
C90300-M01 is rated for continuous service to 260°C (500 °F). It conducts heat at 75 W/m·K (43.3 BTU/hr·ft·°F), better than 50% of copper alloy grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
C90300-M01 conducts electricity at 12 % IACS, worse than 62% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (66/100), better than 64% of copper alloy grades.
Sustainability4
Producing a kilogram of C90300-M01 takes about 60 MJ of energy and emits 4 kg of CO₂ — more than 69% of copper alloy grades. Typical recycled content is 75%.
Manufacturability7
C90300-M01's machinability is good (55/100, better than 71% of copper alloy grades); weldability fair (35/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C90300-M01
Is C90300 easy to machine?
Machines readily (≈30 % of free-cutting brass) with sharp positive-rake carbide or HSS tools, high speed, light feed and soluble-oil coolant; chips are somewhat stringy because Pb is limited to 0.3 %.
Can C90300 be welded?
Soldering and brazing are excellent; GTAW/oxyfuel repair welding with phosphor-bronze filler needs 150–250 °C preheat and slow cooling to avoid hot cracking from tin segregation.
Can C90300 be formed, bent or molded?
Foundry alloy only — cast in sand, permanent mold, centrifugal or continuous form with generous risering because of the wide freezing range; not cold-formable.
What surface finishes work on C90300?
Takes a good buffed or satin finish and accepts chemical patina, tin, nickel or chrome plating; no anodizing — protect decorative surfaces with lacquer.
C90300 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 |
|---|---|---|
| CuCu + named elements ≥ 99.4 % | 86 – 89 | 88 |
| Sn | 7.5 – 9 | 8 |
| Zn | 3 – 5 | 4 |
| Pb | ≤ 0.3 | 0.15 |
| Niincluding Co | ≤ 1 | — |
| Fe | ≤ 0.2 | — |
| Sb | ≤ 0.2 | — |
| S | ≤ 0.05 | — |
| P | ≤ 0.05 | — |
| Si | ≤ 0.01 | — |
| Al | ≤ 0.01 | — |
C90300-M01 — frequently asked
What is C90300-M01 used for?
C90300-M01 is typically used for valve bodies, pump housings, fittings, gears and bearings. In short: pressure-tight tin bronze; good strength and ductility; standard valve casting alloy.
What is the yield strength of C90300-M01?
C90300-M01 has a typical yield strength of 145 MPa (21 ksi) and a tensile strength of 310 MPa (45 ksi) — weaker than 72% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is C90300-M01 easy to machine?
Reasonably — machinability is rated good (55/100, better than 71% of copper alloy grades). Machines readily (≈30 % of free-cutting brass) with sharp positive-rake carbide or HSS tools, high speed, light feed and soluble-oil coolant; chips are somewhat stringy because Pb is limited to 0.3 %.
Can C90300-M01 be welded?
With care — weldability is rated fair (35/100). Soldering and brazing are excellent; GTAW/oxyfuel repair welding with phosphor-bronze filler needs 150–250 °C preheat and slow cooling to avoid hot cracking from tin segregation.
What surface finishes work on C90300-M01?
Takes a good buffed or satin finish and accepts chemical patina, tin, nickel or chrome plating; no anodizing — protect decorative surfaces with lacquer.
Can C90300-M01 be formed, bent or molded?
Foundry alloy only — cast in sand, permanent mold, centrifugal or continuous form with generous risering because of the wide freezing range; not cold-formable.
What is the maximum service temperature of C90300-M01?
C90300-M01 is rated for continuous use to about 260°C (500 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C90300-M01 and C90300-M07?
M01 is the default condition — standard ASTM B584 sand casting condition for valve bodies, pump housings and general pressure castings. M07: continuous-cast bar/tube stock (ASTM B505) with the finest structure and highest yield strength — best for machined bushings and worm gears. Yield strength is 145 MPa in M01 versus 172 MPa in M07.
Sources
- ASTM B584 — Standard Specification for Copper Alloy Sand Castings for General Applications — ASTM International (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM International (2018)
- ASTM B271/B271M — Copper-Base Alloy Centrifugal Castings — ASTM International (2019)
- CDA Alloy C90300 property datasheet — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.