Copper Alloy C33200
UNS C33200
C33200 is a high-leaded yellow brass in the wrought copper–zinc family, with a lead content raised specifically for fast chip breaking, supplied largely as drawn tube and rod in OS015/OS025/OS050 annealed grain sizes plus H55, H58, H04 and H80.
Reference datasheet — C33200 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the H80 condition
C33200 tempers and conditions
C33200 is supplied in 7 conditions, soft to hard. H80 is the default FabDigit quotes; the values on this page are for it.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed to 0.050 mm grain size | Softest coarse-grain anneal — pick it for maximum deep-bend/expansion ductility. | 105 | 310 | 60 | 60 HB | 27 % IACS |
Annealed to 0.025 mm grain size | Standard soft tube temper when the part is bent, flared or expanded before/after machining. | 110 | 325 | 55 | 65 HB | 27 % IACS |
Annealed to 0.015 mm grain size | Finest-grain annealed tube for light forming plus best surface finish after machining. | 125 | 345 | 50 | 70 HB | 27 % IACS |
Light drawn | Lightly drawn tube giving tight dimensions with much of the annealed ductility retained. | 240 | 380 | 30 | 95 HB | 26 % IACS |
Drawn, general purpose | General-purpose drawn tube: best compromise of strength, straightness and machining behaviour. | 290 | 415 | 22 | 110 HB | 26 % IACS |
Full hard | Full-hard cold-worked stock for maximum strength/stiffness where no further forming is needed. | 370 | 470 | 12 | 130 HB | — |
H80Default Hard drawn | Most commonly stocked screw-machine tube temper: highest as-drawn strength with short, clean chips. | 415 | 515 | 7 | 140 HB | — |
What is C33200?
C33200 is a high-leaded yellow brass in the wrought copper–zinc family, with a lead content raised specifically for fast chip breaking, supplied largely as drawn tube and rod in OS015/OS025/OS050 annealed grain sizes plus H55, H58, H04 and H80. It is used for precision screw-machine work where cycle time and surface finish govern: 415 MPa yield, 515 MPa tensile, 7% elongation and 140 HB (73 HRB) in the default hard condition, machining at roughly 80% of C36000. Ductility and formability are low (formability score 25), lead rules out fusion welding and hot working, and service is limited to about 150 °C. C36000 rod is the usual substitute for solid turned parts. C33200 has a density of 8.47 g/cm³ (0.306 lb/in³), lighter than 68% of copper alloy grades. It melts at 899°C (1,650 °F). C33200 has a yield strength of 415 MPa (60.2 ksi) and a tensile strength of 515 MPa (74.7 ksi) — stronger than 82% of copper alloy grades. Elongation at break is 7% and the elastic modulus is 103 GPa (14.9 Msi).
What is C33200 used for?
- screw machine parts
- small precision fittings
- hardware
Advantages
- Easy to machine — 82/100, better than 90% of copper alloy grades
- High strength — 415 MPa (60.2 ksi), better than 82% of copper alloy grades
Limitations
- Limited service temperature — 150°C (302 °F), worse than 96% of copper alloy grades
- Difficult to weld — 20/100, worse than 88% of copper alloy grades
- Limited ductility — 7%, worse than 86% of copper alloy grades
C33200 properties
Typical room-temperature values for C33200-H80; bars are the position among copper alloy grades.
Physical3
C33200 has a density of 8.47 g/cm³ (0.306 lb/in³), lighter than 68% of copper alloy grades. It melts at 899°C (1,650 °F).
Mechanical11
C33200 has a yield strength of 415 MPa (60.2 ksi) and a tensile strength of 515 MPa (74.7 ksi) — stronger than 82% of copper alloy grades. Elongation at break is 7% and the elastic modulus is 103 GPa (14.9 Msi).
Thermal6
C33200 is rated for continuous service to 150°C (302 °F). It conducts heat at 116 W/m·K (67 BTU/hr·ft·°F), better than 64% of copper alloy grades. Thermal expansion is 20.2 µm/m·K (11.2 µin/in·°F).
Electrical3
C33200 conducts electricity at 26 % IACS, better than 63% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 86% of copper alloy grades.
Sustainability4
Producing a kilogram of C33200 takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 70%.
Manufacturability7
C33200's machinability is very good (82/100, better than 90% of copper alloy grades); weldability poor (20/100); formability poor (25/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the copper alloy family
Yield strength against density for every copper alloy grade FabDigit runs. C33200 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with C33200
Is C33200 easy to machine?
Excellent free-cutting behaviour (≈80 % of C36000); use high speeds, zero-to-negative rake brass tooling and light emulsion or dry cutting.
Can C33200 be welded?
Not recommended for fusion welding (lead causes hot cracking); join by soft soldering or silver brazing with low heat input.
Can C33200 be formed, bent or molded?
Cold form only in OS tempers and with generous radii; avoid hot working above ~600 °C because of lead hot-shortness.
C33200 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 |
|---|---|---|
| CuASTM B135 C33200 | 65 – 68 | 66.5 |
| Pbfree-machining addition | 1.5 – 2.5 | 2 |
| Fe | ≤ 0.07 | |
| Zn | balance |
What surface finishes work on C33200?
Takes bright dipping, tumbling and buffing well; nickel/chrome or tin plating standard — no anodizing, and stress-relieve to avoid SCC before plating.
Surface treatments FabDigit runs on copper alloy parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
How much does C33200 cost?
C33200 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
C33200 — frequently asked
What is C33200 used for?
C33200 is typically used for screw machine parts, small precision fittings and hardware. In short: free-cutting leaded tube; 80% of C36000 machinability; high-strength hard temper.
What is the yield strength of C33200?
C33200 has a typical yield strength of 415 MPa (60.2 ksi) and a tensile strength of 515 MPa (74.7 ksi) — stronger than 82% of copper alloy grades. Strength varies by condition: see the 7 listed tempers.
Is C33200 easy to machine?
Yes — machinability is rated very good (82/100, better than 90% of copper alloy grades). Excellent free-cutting behaviour (≈80 % of C36000); use high speeds, zero-to-negative rake brass tooling and light emulsion or dry cutting.
Can C33200 be welded?
Not readily — weldability is rated poor (20/100). Not recommended for fusion welding (lead causes hot cracking); join by soft soldering or silver brazing with low heat input.
What surface finishes work on C33200?
Takes bright dipping, tumbling and buffing well; nickel/chrome or tin plating standard — no anodizing, and stress-relieve to avoid SCC before plating.
Can C33200 be formed, bent or molded?
Cold form only in OS tempers and with generous radii; avoid hot working above ~600 °C because of lead hot-shortness.
What is the maximum service temperature of C33200?
C33200 is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C33200-H80 and C33200-OS050?
H80 is the default condition — most commonly stocked screw-machine tube temper: highest as-drawn strength with short, clean chips. OS050: softest coarse-grain anneal — pick it for maximum deep-bend/expansion ductility. Yield strength is 415 MPa in H80 versus 105 MPa in OS050.
How much does C33200 cost?
C33200 is a high-cost copper alloy ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- ASTM B135 — Seamless Brass Tube — ASTM International (2017)
- ASTM B36/B587 (related leaded brass product forms) — ASTM International (2018)
- CDA Alloy Database — C33200 High-Leaded Brass Tube — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol. 2 — Properties of Nonferrous Alloys — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.