Phosphor Bronze Machining
A Guide to phosphor bronze CNC Machined Parts: Properties, Applications and Design Considerations
What is Phosphor Bronze?
Phosphor Bronze (also known as tin bronze or phos bronze) is an alloy of copper, tin and phosphorous. One of the oldest metal alloys, it is a versatile material that offers very good corrosion resistance. It is particularly used within the marine industry but also electrical, aerospace and chemical.
A number of grades of phosphor bronze are available. PB102 is the most common grade of wrought phosphor bronze used in the UK.
It has high corrosion resistance and excellent spring qualities – making it suitable for a wide range of applications and especially heavy duty components.
Main Attributes of Phosphor Bronze:
- High corrosion resistance
- High fatigue strength
- Low coefficient of friction
- Fine grain
- Good spring properties
- High mechanical properties
- Difficult to machine
- Good resistance to cold
- Good thermal and electrical conductivity
GET PHOSPHOR BRONZE MACHINING QUOTE
Detailed information about Phosphor Bronze for designers including UK stock sizes and technical properties can be found in the tabs below. Please note: this information is provided as a guide only. All information is based on our present knowledge and is given in good faith. No liability will be accepted by Penta Precision in respect of any action taken by any third party in reliance thereon.
Similar or obsolete designation and trade names
You may also see Phosphor Bronze referred to as:
- PB101 / CW450K / Cusn4
- PB102 / CW451K / CuSn5 / UNS C51000 / ASTM B139 / QQ-B750 / SAE J461
- PB103 / CW452K / CuSn6
- CW453K / CuSn8
- CW459K / CuSn8P
- CW455K / CuSn4Pb2P
- CW457K / CuSn4Te1P
- CW458K / CuSn5Pb1
- CW460K / CuSn8PbP
- CW454K / CuSn3Zn9
- CW456K / CuSn4Pb4Zn4
- AMS 4625 / NES838
- BS1400 / PB1
- AMS 4510
- DEFSTAN 02-838 (Naval specification)
Phosphor Bronze Components, Applications & Industries
Here are some examples of the industries and components for which Phosphor Bronze is appropriate. This is by no means an exhaustive list. Please do get in touch if you are considering using Phosphor Bronze and we can talk through your project with you.
Typical Components & Applications:
- Bushes & bearings
- Worm Gears
- Pump & valve spindles
- Connectors & switches
Phosphor Bronze Machining Service - Phosphor Bronze Milling & Turning
Penta Precision provides highly accurate Phosphor Bronze machined parts. Customers turn to us when they have had quality and delivery issues with their existing suppliers and need a reliable precision machining partner.
Penta Precision provides the following Phosphor Bronze machining services:
- CNC milling – prototypes & large batch runs
- CNC turning – prototypes & large batch runs
- Insert installation
- Part marking
- Manual milling
- Manual turning
- Machining design advice
- Machining drawing service
Reasons to Choose Penta:
- ISO 9001:2015 quality assurance
- Consistent high quality machined parts
- Reliable delivery dates - our track record speaks volumes
- Exceptional customer service and communication
- Machining design advice
- Extensive experience in our field
What Makes Penta Different?
Our 3 unique pillars to delivering exemplary service:
We are regularly machining Phosphor Bronze for customers all over the UK. Our customers depend on our machining expertise as well as our outstanding delivery performance, to machine the highest quality parts. If you'd like to discuss how we can help you with your Phosphor Bronze machining requirements, here's a list of ways to get in touch with us.