Copper Alloy C36200-M30
Temper
UNS C36200
M30 = as hot extruded
Mill condition of large-diameter extruded rod and shapes; lowest strength, best for subsequent hot forging.
Values for the M30 condition
Other C36200 tempers and conditions
C36200 is listed in 5 conditions; see the grade overview at C36200.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Softest condition; pick when some bending, staking or upsetting is needed after machining. | 125 | 320 | 55 | 68 HB | 27 % IACS |
M30This page As hot extruded | Mill condition of large-diameter extruded rod and shapes; lowest strength, best for subsequent hot forging. | 125 | 340 | 50 | 78 HB | 27 % IACS |
Quarter hard | Light draw for straightness and tighter tolerance while keeping more ductility than H02. | 240 | 370 | 32 | 100 HB | 26 % IACS |
H02Default Half hard | Standard stock condition for screw-machine rod: best combination of strength, straightness and chip control. | 310 | 400 | 25 | 115 HB | 26 % IACS |
Full hard | Small-diameter rod/wire drawn hard for maximum strength and stiffness; very limited ductility. | 370 | 450 | 15 | 135 HB | 26 % IACS |
What is C36200-M30?
C36200-M30 is C36200 in the M30 temper — mill condition of large-diameter extruded rod and shapes; lowest strength, best for subsequent hot forging. C36200-M30 has a yield strength of 125 MPa (18.1 ksi) and a tensile strength of 340 MPa (49.3 ksi) — weaker than 77% of copper alloy grades. Elongation at break is 50% and the elastic modulus is 97 GPa (14.1 Msi). C36200-M30 has a density of 8.5 g/cm³ (0.307 lb/in³), lighter than 65% of copper alloy grades. It melts at 885°C (1,625 °F). H02 is the default condition FabDigit quotes; M30 is available on request or by drawing note.
Advantages
- Easy to machine — 95/100, better than 100% of copper alloy grades
- Ductile — tolerates forming and impact — 50%, better than 97% of copper alloy grades
Limitations
- Needs corrosion protection — 45/100, worse than 98% of copper alloy grades
- Difficult to weld — 15/100, worse than 94% of copper alloy grades
- Low stiffness — 97 GPa (14.1 Msi), worse than 88% of copper alloy grades
- Low strength — 125 MPa (18.1 ksi), worse than 77% of copper alloy grades
C36200-M30 properties
Typical room-temperature values for C36200-M30; 12 are specific to this condition. Other listed values are C36200 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C36200-M30 has a density of 8.5 g/cm³ (0.307 lb/in³), lighter than 65% of copper alloy grades. It melts at 885°C (1,625 °F).
Mechanical12
C36200-M30 has a yield strength of 125 MPa (18.1 ksi) and a tensile strength of 340 MPa (49.3 ksi) — weaker than 77% of copper alloy grades. Elongation at break is 50% and the elastic modulus is 97 GPa (14.1 Msi).
Thermal6
C36200-M30 is rated for continuous service to 250°C (482 °F). It conducts heat at 115 W/m·K (66.4 BTU/hr·ft·°F), better than 61% of copper alloy grades. Thermal expansion is 20.5 µm/m·K (11.4 µin/in·°F).
Electrical3
C36200-M30 conducts electricity at 27 % IACS, better than 67% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is fair (45/100), worse than 98% of copper alloy grades.
Sustainability4
Producing a kilogram of C36200-M30 takes about 58 MJ of energy and emits 3.6 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 75%.
Manufacturability6
C36200-M30's machinability is excellent (95/100, better than 100% of copper alloy grades); weldability poor (15/100); formability poor (30/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C36200-M30
Is C36200 easy to machine?
Benchmark free-cutting alloy: use zero-to-negative rake tooling, high speeds, light coolant; chips break short and tool wear is minimal.
Can C36200 be welded?
Fusion welding is not recommended because of lead and zinc fume/hot cracking; join by soft soldering (excellent) or low-temperature silver brazing (fair).
Can C36200 be formed, bent or molded?
Hot forge/extrude at 650–750 °C readily; cold bending, staking and knurling only in O60/H01 and with generous radii — H02+ cracks easily.
What surface finishes work on C36200?
Polishes and buffs to a bright yellow finish; takes nickel/chrome and decorative plating well after proper lead-smut removal (acid dip) before electroplating.
C36200 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 |
|---|---|---|
| Cufree-cutting brass range per CDA registration | 60 – 63 | 61.5 |
| Pbfree-machining addition | 2.5 – 3.7 | 3 |
| Fe | ≤ 0.35 | — |
| Snsmall tin addition sometimes specified for corrosion resistance | ≤ 0.3 | 0.15 |
| Zn≈ 33–36 % | balance | — |
C36200-M30 — frequently asked
What is C36200-M30 used for?
C36200-M30 is typically used for machined fittings, valve stems and screw-machine parts. In short: 100-rated free-cutting brass; tin-bearing corrosion variant; poor cold formability.
What is the yield strength of C36200-M30?
C36200-M30 has a typical yield strength of 125 MPa (18.1 ksi) and a tensile strength of 340 MPa (49.3 ksi) — weaker than 77% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is C36200-M30 easy to machine?
Yes — machinability is rated excellent (95/100, better than 100% of copper alloy grades). Benchmark free-cutting alloy: use zero-to-negative rake tooling, high speeds, light coolant; chips break short and tool wear is minimal.
Can C36200-M30 be welded?
Not readily — weldability is rated poor (15/100). Fusion welding is not recommended because of lead and zinc fume/hot cracking; join by soft soldering (excellent) or low-temperature silver brazing (fair).
What surface finishes work on C36200-M30?
Polishes and buffs to a bright yellow finish; takes nickel/chrome and decorative plating well after proper lead-smut removal (acid dip) before electroplating.
Can C36200-M30 be formed, bent or molded?
Hot forge/extrude at 650–750 °C readily; cold bending, staking and knurling only in O60/H01 and with generous radii — H02+ cracks easily.
What is the maximum service temperature of C36200-M30?
C36200-M30 is rated for continuous use to about 250°C (482 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between C36200-H02 and C36200-O60?
H02 is the default condition — standard stock condition for screw-machine rod: best combination of strength, straightness and chip control. O60: softest condition; pick when some bending, staking or upsetting is needed after machining. Yield strength is 310 MPa in H02 versus 125 MPa in O60.
Sources
- ASTM B16 / B455 — Free-Cutting Brass Rod, Bar and Shapes — ASTM International (2020)
- CDA Standard Designation & Alloy Property Data (C36000 / C36200) — 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.