- Fujii Manufacturing Overview
- Business Items
- Machinery & Equipment
- Product Specification Table - Phosphor Bronze & Free-Cutting Phosphor Bronze
- Product Specification Table - Nickel Silver & Free-Cutting Nickel Silver
- Product Specification Table - Lead-Free Free-Cutting Phosphor Bronze Rods & Wires
- Manufacturing Flowchart
- Product Physical Properties
- Good Cutting Machinability
- Tensile Strength & Electrical Conductivity (%IACS)
Fujii Manufacturing Overview
Fujii Manufacturing’s products-“phosphor bronze, free-cutting phosphor bronze, nickel silver, free-cutting nickel silver, special copper alloys” and “rods, wires, profiles”-are produced in an integrated process from casting to rolling and drawing.
Business Items
Drawing and wire-drawing copper products
Rods, wires, profiled rods
Phosphor bronze, free-cutting phosphor bronze, nickel silver, free-cutting nickel silver BeCu, other special copper alloys- Various wire diameters • • • • • • Ø0.05~ 10.00
- Various rod diameters • • • • • • Ø1.00~350.00
- Monthly production capacity• • • • • • • • 200 t
Machinery & Equipment
Melting & casting equipment
Induction melting furnace, vacuum melting furnace, vertical continuous casterCold-working equipment
Wire drawing machine, continuous wire drawing machineStraightening & inspection equipment
Straightener, eddy-current flaw detector (line)Heat-treatment equipment
Car-type heat-treatment furnace, rotary annealing furnace, tube annealing furnace, bell-type annealing furnaceGrinding machine
Others
Various cold press-rolling mills, cold rolling mills, and lathes
Product Specification Table - Phosphor Bronze & Free-Cutting Phosphor Bronze
Phosphor bronze • • • A copper alloy with tin added; features elasticity, corrosion resistance, fatigue resistance, and wear resistance.
[Applications] Gear shafts, cams, fittings, shafts, bearings, screws, nuts, connectors. Widely used for spiral spring clips, screws, joint materials, washers, etc.
Alloy number |
Cu |
Sn |
P |
Zn |
Fe |
Pb |
Cu+Sn+P |
|---|---|---|---|---|---|---|---|
C5111 |
Balance |
3.5~4.5 |
0.03~0.35 |
0.20 max |
0.10 max |
0.02 max |
99.5 min |
C5102 |
Balance |
4.5~5.5 |
0.03~0.35 | 0.20 max | 0.10 max | 0.02 max | 99.5 min |
C5191 |
Balance |
5.5~7.0 |
0.03~0.35 | 0.20 max | 0.10 max | 0.02 max | 99.5 min |
C5212 |
Balance |
7.0~9.0 |
0.03~0.35 | 0.20 max | 0.10 max | 0.02 max | 99.5 min |
| Product complies with RoHS requirements | Wt % |
Free-cutting phosphor bronze • • • A copper alloy with tin added; features elasticity, corrosion resistance, fatigue resistance, and wear resistance.
[Applications] Electronic products, screws, bearings, push rods, bushings, nuts, small watch parts.
Alloy number |
Cu |
Sn |
P |
Zn |
Pb |
Cu+Sn+P+Pb(+Zn) |
|---|---|---|---|---|---|---|
C5341 |
Balance |
3.5~5.8 |
0.03~0.35 |
0.8~1.5 |
99.5 min |
|
C5441 |
Balance |
3.0~4.5 |
0.01~0.50 |
1.5~4.5 |
3.5~4.0 |
99.5 min |
FX415 |
Balance |
3.0~4.5 |
0.01~0.50 |
2.5~5.5 |
1/0~2.3 |
99.5 min |
FX400 |
Balance |
3.0~4.5 |
0.01~0.50 |
1.5~4.5 |
3.5~3.9 |
99.5 min |
Product complies with RoHS requirements; Pb content ≤ 4% |
Wt % |
Product Specification Table - Nickel Silver & Free-Cutting Nickel Silver
Nickel silver • • • A copper alloy with nickel and zinc added; features luster, corrosion resistance, and fatigue resistance.
[Applications] Widely used for ornaments, eyewear parts, medical devices, fishing gear, etc.
Alloy number |
Cu |
Ni |
Mn |
Zn |
Fe |
Pb |
|---|---|---|---|---|---|---|
C7701 |
54.0~58.0 |
16.5~19.5 |
0.50 max |
Rem. |
0.25 max |
0.03 max |
C7521 |
62.0~66.0 |
16.5~19.5 |
0.50 max |
Rem. |
0.25 max |
0.03 max |
C7541 |
60.0~64.0 |
12.5~15.5 |
0.50 max |
Rem. |
0.25 max |
0.03 max |
C7451 |
63.0~67.0 |
8.5~11.0 |
0.50 max |
Rem. |
0.25 max |
0.03 max |
| Product complies with RoHS requirements | Wt % |
Free-cutting nickel silver • • • A nickel-silver copper alloy with zinc added; features corrosion resistance and fatigue resistance.
[Applications] Widely used for ball-point pens, eyewear parts, automobile parts, lead screws, etc.
Alloy number |
Cu |
Ni |
Mn |
Zn |
Fe |
Pb |
|---|---|---|---|---|---|---|
C5341 |
57.0~61.0 |
14.0~16.0 |
0.50 max |
Rem. |
0.25 max |
2.5~3.5 |
C5441 |
60.0~64.0 |
16.5~19.5 |
0.50 max |
Rem. |
0.25 max |
0.8~1.8 |
Product complies with RoHS requirements; Pb content ≤ 4% |
Wt % |
Product Specification Table - Lead-Free Free-Cutting Phosphor Bronze Rods & Wires
Lead-free free-cutting phosphor bronze rods and wires
Produce various materials such as nickel silver, free-cutting nickel silver, phosphor bronze, and free-cutting phosphor bronze. Widely used for eyewear, musical instruments, engine carburetors, models, gasoline-meter parts, etc.
Alloy number |
Cu |
Sn |
P |
Ni |
Zn |
S |
Cu+Sn+P+Pb(+Zn) |
|---|---|---|---|---|---|---|---|
KFX41* |
Balance |
2.0-6.0 |
0.03-0.35 |
0.6-3.0 |
0.10 max. |
0.1-0.5 |
99.5 min |
| *Products compliant with RoHS/ELV have been developed |
Manufacturing Flowchart
Product Physical Properties
Good Cutting Machinability
Tensile Strength & Electrical Conductivity (%IACS)
