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NXF UNS C10200/JIS C1020/2.0040/CW008A Diameter 1-100mm Grade 100-450HV Copper Fastener C10200 Copper Flat WasherNXF UNS C10200/JIS C1020/2.0040/CW008A Diameter 1-100mm Grade 100-450HV Copper Fastener C10200 Copper Flat Washer
2026-11-02 15:56 NXF GROUP
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Products Description
C10200 Introduction
C10200 is pure Copper with a Copper content of over 99.96%. It is also also called ”Oxygen-Free Copper” (OFC) because it does not contain Copper Oxide (Cu2O) or residual deoxidant.It has excellent electrical and thermal conductivity and does not cause Hydrogen embrittlement even when heated to high temperatures in a reducing atmosphere.
C10200 Copper Flat Washer Introduction
C10200 Copper Flat Washer is an annular flat fastener made of UNS C10200 oxygen-free copper, complying with ASTM B152 standard. It features ultra-high purity with copper content ≥99.95% and extremely low oxygen content, effectively avoiding hydrogen embrittlement under high-temperature working conditions. This washer delivers excellent electrical conductivity, superior thermal conductivity and good ductility. When tightened, it can deform slightly to distribute bolt clamping force evenly, protect workpiece surfaces and achieve reliable sealing. It is manufactured by precision stamping or CNC machining with smooth surface and tight dimensional tolerance. It is widely used in vacuum equipment, electronic assemblies, power terminals, sensor sealing, heat conduction modules and fluid pipeline systems. Multiple sizes of inner diameter, outer diameter and thickness are available, and custom specifications can be produced according to customer drawings.
C10200 Copper Flat Washer Drawing
C10200 Chemical Composition And Mechanical Properties
Factory and Product Pictures
C10200 Copper Flat Washer Product Pictures
C10200 PMI spectral testing proves
Video of a customer visiting us
Product processing
C10200 Copper Flat Washer Product Processing
1.Raw Material Inspection:
Adopt C10200 oxygen-free copper coil / copper sheet as raw material. Check the mill test report, chemical composition and mechanical performance data. Conduct on-site spectrum testing to confirm the copper purity meets C10200 standard. Inspect the thickness consistency of the copper material, and visually check the surface for oxidation spots, scratches, pits, cracks and roll marks. Unqualified raw materials shall be isolated and returned. Only qualified copper stock can be put into the stamping process.
2.Stamping & Blanking:
3.Deburring & Edge Finishing:
4.Stress Relief Annealing:
5.Ultrasonic Cleaning & Anti-Tarnish Treatment:
6.Final Inspection & Packaging:
2.Stamping & Blanking:
Install the precision blanking die on the high-speed punch press. Continuously feed the qualified copper coil or sheet into the stamping station. Finish blanking and inner hole punching in one stroke to form flat washer blanks. Strictly control the tolerance of inner diameter, outer diameter and thickness according to customer drawings or relevant standards. Adjust stamping pressure and feeding speed to prevent workpiece warping, deformation and edge tearing. Check die wear regularly during mass production to ensure stable dimensional accuracy.
3.Deburring & Edge Finishing:
Put the stamped washer blanks into the vibratory finishing machine with ceramic grinding media for tumbling deburring. Remove sharp burrs and flash formed on the cutting edge during stamping. Control the tumbling time reasonably to avoid excessive abrasion and size reduction. After tumbling, screen and separate washers from abrasives. Carry out spot inspection to ensure smooth edges without sharp corners that may damage mating parts.
4.Stress Relief Annealing:
Place washers that need good softness and flatness into the protective atmosphere annealing furnace. Heat up to the specified temperature and keep warm for a certain period to eliminate residual stamping stress, improve the ductility of C10200 copper and reduce the risk of later deformation. Slow cooling is adopted to avoid rapid cooling oxidation and water marks. Random sampling hardness test is performed after cooling to meet the required soft state.
5.Ultrasonic Cleaning & Anti-Tarnish Treatment:
Load the deburred washers into the ultrasonic cleaning tank with degreasing solution to fully remove stamping oil, metal powder and surface contaminants. Rinse with deionized water and dry with clean hot air immediately to prevent water stain oxidation. If required, perform anti-tarnish passivation treatment to form an ultra-thin protective film on the copper surface, slowing down discoloration and improving oxidation resistance. Conduct full visual surface check after drying.
6.Final Inspection & Packaging:
Perform batch sampling and full appearance inspection. Use calipers and micrometers to verify outer diameter, inner diameter, thickness and flatness. Sort out defective products for rework or scrapping. Mark batch number, material grade and specification as requested. Pack qualified C10200 copper flat washers into sealed plastic bags with desiccant to prevent oxidation, then pack into export cartons with product labels and shipping marks for warehousing and shipment.
Our NXF GROUP advantage as follow
1.Our NXF GROUP have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
Packing & Delivery
Packing
Delivery
Company Profile
New XiFei (SuZhou) Business Co.,Ltd is one of the leading and most respected manufacturers in China. Our products include metals,machinery, containers, construction materials, mechanical products, electrical systems, and medical accessories.Established in1980, XIFEI has been working diligently ever since to embrace the needs of our global customer base.We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, "Service, Management and Craftsmanship." Our advantage:3S Service(Small Quantity/Short Time/Special Material)
Certification
FAQ
1. who are we?
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
Our advantage:
We are based in Jiangsu, China, start from 2021,sell to South Asia(30.00%),Eastern Asia(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),Domestic Market(5.00%),North America(5.00%),Northern Europe(5.00%),Central America(5.00%),Africa(5.00%),Southeast Asia(5.00%). There are total about 101-200 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Pipe,Flange,Steel plate,Pipe fittings,Alloy products
4. why should you buy from us not from other suppliers?
Our advantage:
1.Our NXF GROUP have our own factory, and we can control the cost by producing by ourselves. We have a great advantage in price and can give you the lowest price based on best quality.
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
2.Our NXF GROUP can strictly control the quality. We have production, quality inspection, warehousing and other departments to coordinate and control the quality,Such as PMI and size testing.
3.Our NXF GROUP biggest advantage is 3S service. Small quantity, short time, special materials.
4.Our NXF GROUP have excellent quality certificate system and trademark certificate.
5.Our NXF GROUP have a comprehensive after-sales service guarantee, such as the transaction guarantee provided by Alibaba International Station, as well as remote technical guidance and services.
6.Our NXF GROUP have a well-established logistics support system that can save you both time and money, providing you with a one-stop service.
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal;
Language Spoken:English,Chinese,Spanish,Russian
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