Copper, brass & bronze · BS EN 12163

Phosphor Bronze PB102 (CW451K) — Machining & Properties

Typical properties, what Phosphor Bronze PB102 (CW451K) is like on a machine tool, what it gets used for, and the tolerance and finishes we hold on it — from a shop that actually machines it, not a datasheet aggregator. Every figure here drives our own calculators.

8.9 g/cm³
Density (typical)
410 MPa
Tensile strength
HB 110
Hardness
Good
Machinability
18 µm/m·°C
Thermal expansion
110 GPa
Elastic modulus
±0.010mm
Achievable tolerance

Machining Phosphor Bronze PB102 (CW451K)

Machinability is rated good — a well-behaved material to machine with correctly chosen tooling and parameters. Brass CZ121 and CZ131 are among the most economical materials to machine — their outstanding chip-breaking behaviour allows high speeds and excellent surface finish. Beryllium copper must be machined with appropriate respiratory controls in place.

Our standard achievable tolerance on Phosphor Bronze PB102 (CW451K) is ±0.010mm under normal conditions, with tighter tolerances on critical features agreed at quotation. Standard finishes: As machined, nickel plate. Full material traceability with MTR and CoC documentation on every order.

Typical applications

Bearing bushings, spring contacts, gear wheels, anti-spark fittings.

Use Phosphor Bronze PB102 (CW451K) in our free tools

Other copper, brass & bronze grades we machine: Copper C101 (ETP) · Copper C110 · Brass CZ121 (CW614N) · Brass CZ131 (CW617N)all 50 grades.

Reference tool. Values are typical for the grade and condition stated and vary by supplier, temper and batch — they are reference data, not a specification. The Material Test Report supplied with your order is the governing document for the material actually used. Figures are provided in good faith for early design guidance and are not a substitute for the published standard or your own engineering judgement. Always verify against the controlled standard and your drawing before manufacture. If a feature is critical, tell us at quotation stage and we'll confirm it explicitly.
Questions engineers actually ask

Phosphor Bronze PB102 (CW451K) — FAQ

What is the density of Phosphor Bronze PB102 (CW451K)?

8.9 g/cm³ (typical). That is 8900 kg/m³ — our metal weight calculator uses exactly this figure for Phosphor Bronze PB102 (CW451K).

What is the tensile strength of Phosphor Bronze PB102 (CW451K)?

Typically 410 MPa. Treat it as a typical value, not a specification — the Material Test Report supplied with your order states the actual certified figures for the batch.

Is Phosphor Bronze PB102 (CW451K) easy to machine?

Its machinability is rated good — a well-behaved material to machine with correctly chosen tooling and parameters.

What is Phosphor Bronze PB102 (CW451K) used for?

Typical applications: Bearing bushings, spring contacts, gear wheels, anti-spark fittings.

What tolerance can be held when machining Phosphor Bronze PB102 (CW451K)?

Our standard achievable tolerance on Phosphor Bronze PB102 (CW451K) is ±0.010mm under normal conditions (ISO 2768-f general tolerancing). Tighter tolerances on critical features can be agreed at quotation for specific geometries.

Can Dalloway machine Phosphor Bronze PB102 (CW451K)?

Yes — we machine Phosphor Bronze PB102 (CW451K) in-house on 3, 4 and 5-axis milling and CNC turning, from single prototypes to production, with MTR and CoC documentation standard. Typical finishes: As machined, nickel plate.

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