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Free-Cutting Brass Spec Table
Free-Cutting Brass KS Specifications — 1 sizes
KS D 5101
Free-cutting brass with added lead or bismuth for maximum machinability, ideal for mass-produced lathe parts (nuts, fittings, nipples).
Practical Notes
- Leaded free-cutting brass (C3604) is RoHS restricted. Use lead-free (bismuth-added) versions for electrical/electronic components.
- Optimized for automatic lathe mass production. Best surface quality at cutting speeds of 200+ m/min.
KSFree-Cutting Brass
1 sizes| Name | Type | Tensile | Yield | Hardness | Use |
|---|---|---|---|---|---|
| C3604 | Free-cuttingBrass | ≥370 | ≥145 | HV90~130 | PrecisionParts, , , Gear |
Key Features
- C3604 (59Cu-3Pb-Zn) representative; Pb addition causes fine chip breakage; optimized for auto-lathe
- High-speed machining at 100–300 m/min cutting speed; extended tool life
- Increasing bismuth (Bi) / silicon (Si) substitute alloys to meet RoHS lead regulations
Key Applications
Auto-lathe mass-produced turned parts, valve stems, nipples/unions, electrical busbars, connector pins
FAQ
Cutting speed for free-cutting brass?
Up to 200–400 m/min. 2–3× faster than general brass (C2801), making it optimal for automatic lathe mass production.